Replacement Parts for Caterpillar® Engines
CAT DIESEL ENGINE PARTS LIST
CAT D386, CAT D397, CAT D398, CAT D399
| Caterpillar D386/40.9L | 12 Cylinder | |
| Diesel | Bore 5.750 | |
| 2493 CID | Stroke 8.000 |
CYLINDER KIT
| 12 | LK9111-F | Cylinder kit | 5.75Q bore, PC, straight rod, with plug, rect ring [4M9111 piston, 3S4Q31 rings, 7N98Q9 pinr 7M4926 retainers, 8N5G76 liner, 5P9221 seal kit] |
| 12 | PLG7N1366 | Cylinder kit | 5.75Q bore, PC, straight rod, with plug, key ring [8N5G7G liner, 7N136G piston, 8N5760 rings, 7N9809 pin, 7M4926 retainers, 8N5676 liner] |
| 12 | 4M9111-F | Piston body | 5.75Q bore, PC, straight rod, with plug, rectangular ring; use with ring set 3S4031 |
| 12 | 7N1366 | Piston body | 5.750 bore, PC, straight rod, with plug, keystone ring |
| 12 | 3S4031-F | Ring set | 5.7500 bore, rectangular ring [1 cyl set] |
| 12 | 8N5760 | Ring set | 5.75QQ bore, keystone ring [1 cyl set] |
| 12 | 7N9809-F | Piston pin | 2.3899 diar 4.726 length |
| 24 | 7M4926 | Retainer piston pin | use with 2.4QQ dia pin [repl 6B2291] |
| 12 | 8N5676 | Cylinder liner | 5.75QQ bore, bare liner |
| 12 | 5P9221 | Cylinder liner oring kit | Contains:⑶ 6L7812,⑴ 8N4638 |
| 36 | 6L7812 | Cylinder liner oring | Lower liner s抽I; c加tained in 5P9221 seal kit |
| 12 | 8N4638 | Cylinder liner oring | U卯er filler band; contained in 5P9221 seal kit |
BEARINGS
| D386BRG1 | NOTE | Early main bearing set: | |
| 6 | 7F9121 | Bearing main pair | Std |
| 1 | 5F9848 | Bearing main pair | Std |
| 6 | 4H9972 | Bearing main pair | .050 |
| 1 | 5F9847 | Bearing main pair | .Q5Q |
| D386BRG2 | NOTE | Late main bearing set: | |
| 6 | 4M8121 | Bearing main pair | Std |
| 1 | 4M8122 | Bearing main pair | Std |
| 6 | 4M9045 | Bearing main pair | .050 |
| 1 | 4M9046 | Bearing main pair | .050 |
| 12 | 4M9043 | Bearing rod pair | Std |
| 12 | 4M9044 | Bearing rod pair | .050 |
| 1 | 7F5075 | Bearing cam | |
| 6 | 7F5073 | Bearing cam | |
| 12 | 4M9183 | Bushing con rod | 2.3801D, 2.617 OD, 2.06 0AL |
| 12 | 1599X | Bushing con rod | [Discontinued] 2.350 IDr 2.687 0Dr 2.067 OAL; Full round bushing; use with rod 7B6225, 7B6625 |
| GASKET & SEALS | i | |
| CATGASKET | NOTE | For gasket sets: Call with Serial and Arrangement Numbers |
| CAMSHAFT | ||
| CAMSHAFT | CAMSHAFT | Bemanufactured available, call with casting number |
VALVE TRAIN
| CYLHEAD | NOTE | For complete and bare cylinder heads – Refer to Cylinder Head Catalog or Call with casting | |
| 12 | 8H1993 | Valve intake | 2.343 head dia, 9.297 0AL, 0.4955 stem dia, tapered gr加ve [r印17F5310] |
| 12 | 8H1994 | Valve exhaust | 2.282 head diar 9.266 length, 0.4955 stem diaf tapered groove [repl 7F4784,5F8365,1H9292] |
| 24 | 4F5409-F | Valve spring | Inner, 1.145 0Df 2.359 free |
| 24 | 4F5408-F | Valve spring | Outer, 1.641 0D, 2.421 free |
| 12 | 2S0893-B | Valve guide | Intake, flanged; for 0.4955 stem dia [repl 6F5263] |
| 12 | 1S6654-B | Valve guide | Exhaust, flanged; for 0.4955 stem dia |
| 72 | 3B1143 | Valve lock | No bead, for tapered valve stem, for 0.4995 stem |
| 24 | 7F7666-B | Rotator |
| Caterpillar D386/40.9L | 12 Cylinder | |
| Diesel (Continued) | Bore 5.750 | |
| 2493 CID | Stroke 8.000 |
FUEL IIMJECTOB
| 12 | 8M1584-F | Nozzle service group | Contains: capsule nozzle, orings, seal ring |
| 12 | 9F2393-F | Nozzle service group | Contains: c叩如le nozzle, orings, seal ring |
| I AIR | |||
| TURBO | TURBOCHARGER | New or remanufactured available, call for pricing | |
| Caterpillar D397/40.9L | 12 Cylinder | |
| Diesel | Bore 5.750 | |
| 2493 CID | Stroke 8.000 |
CYLINDER KIT
| 12 | LK9111-F | Cylinder kit | 5.75Q bore, PC, straight rod, with plug, rect ring [4M9111 piston, 3S4Q31 rings, 7N98Q9 pinr 7M4926 retainers, 8N5G76 liner, 5P9221 seal kit] |
| 12 | PLG7N1366 | Cylinder kit | 5.75Q bore, PC, straight rod, with plug, key ring [8N5G7G liner, 7N136G piston, 8N5760 rings, 7N9809 pin, 7M4926 retainers, 8N5676 liner] |
| 12 | 4M9111-F | Piston body | 5.75Q bore, PC, straight rod, with plug, rectangular ring; use with ring set 3S4031 |
| 12 | 7N1366 | Piston body | 5.750 bore, PC, straight rod, with plug, keystone ring |
| 12 | 3S4031-F | Ring set | 5.7500 bore, rectangular ring [1 cyl set] |
| 12 | 8N5760 | Ring set | 5.75QQ bore, keystone ring [1 cyl set] |
| 12 | 7N9809-F | Piston pin | 2.3899 diar 4.726 length |
| 24 | 7M4926 | Retainer piston pin | use with 2.4QQ dia pin [repl 6B2291] |
| 12 | 8N5676 | Cylinder liner | 5.75QQ bore, bare liner |
| 12 | 5P9221 | Cylinder liner oring kit | Contains:⑶ 6L7812,⑴ 8N4638 |
| 36 | 6L7812 | Cylinder liner oring | Lower liner s抽I; c加tained in 5P9221 seal kit |
| 12 | 8N4638 | Cylinder liner oring | U卯er filler band; contained in 5P9221 seal kit |
BEARINGS
| D386BRG1 | NOTE | Early main bearing set: | ||||
| 6 | 7F9121 | Bearing main pair | Std | |||
| 1 | 5F9848 | Bearing main pair | Std | |||
| 6 | 4H9972 | Bearing main pair | .050 | |||
| 1 | 5F9847 | Bearing main pair | .Q5Q | |||
| D386BRG2 | NOTE | Late main bearing set: | ||||
| 6 | 4M8121 | Bearing main pair | Std | |||
| 1 | 4M8122 | Bearing main pair | Std | |||
| 6 | 4M9045 | Bearing main pair | .050 | |||
| 1 | 4M9046 | Bearing main pair | .050 | |||
| 12 | 4M9043 | Bearing rod pair | Std | |||
| 12 | 4M9044 | Bearing rod pair | .050 | |||
| 1 | 7F5075 | Bearing cam | ||||
| 6 | 7F5073 | Bearing cam | ||||
| 12 | 4M9183 | Bushing con rod | 2.3801D, 2.617 OD, 2.06 0AL | |||
| 12 | 1599X | Bushing con rod | [Discontinued] 2.350 IDr 2.687 0Dr 2.067 OAL; Full round bushing; use with rod 7B6225, 7B6625 | |||
| GASKET & SEALS | i | |||||
| CATGASKET | NOTE | For gasket sets: Call with Serial and Arrangement Numbers | ||||
| CAMSHAFT | ||||||
| CAMSHAFT | CAMSHAFT | Bemanufactured available, call with casting number | ||||
VALVE TRAIN
| CYLHEAD | NOTE | For complete and bare cylinder heads – Refer to Cylinder Head Catalog or Call with casting | |
| 12 | 8H1993 | Valve intake | 2.343 head dia, 9.297 0AL, 0.4955 stem dia, tapered gr加ve [r印17F5310] |
| 12 | 8H1994 | Valve exhaust | 2.282 head diar 9.266 length, 0.4955 stem diaf tapered groove [repl 7F4784,5F8365,1H9292] |
| 24 | 4F5409-F | Valve spring | Inner, 1.145 0Df 2.359 free |
| 24 | 4F5408-F | Valve spring | Outer, 1.641 0D, 2.421 free |
| 12 | 2S0893-B | Valve guide | Intake, flanged; for 0.4955 stem dia [repl 6F5263] |
| 12 | 1S6654-B | Valve guide | Exhaust, flanged; for 0.4955 stem dia |
| 72 | 3B1143 | Valve lock | No bead, for tapered valve stem, for 0.4995 stem |
| 24 | 7F7666-B | Rotator |
| Caterpillar D397/40.9L | 12 Cylinder | |
| Diesel (Continued) | Bore 5.750 | |
| 2493 CID | Stroke 8.000 |
FUEL IIMJECTOB
| 12 | 8M1584-F | Nozzle service group | Contains: capsule nozzle, orings, seal ring |
| 12 | 9F2393-F | Nozzle service group | Contains: c叩如le nozzle, orings, seal ring |
| I AIR | |||
| TURBO | TURBOCHARGER | New or remanufactured available, call for pricing | |
| Caterpillar D398/48.8L | 12 Cylinder | |
| Diesel | Bore 6.250 | |
| 2976 CID | Stroke 8.000 |
CYLINDER KIT
| 12 | PLG7N4515 | Cylinder kit | 6.25QQ bore, rectangular ring [7N4515 piston, 1W5105 rings, 7N981Q pin, 7M4926 retainers, 8N9174 liner] |
| 12 | PLG7N5036 | Cylinder kit | 6.25QQ bore, keystone ring [7N5Q3G piston, 1N3601 rings, 7N981Q pin, 7M492G retainers, 8N9174 liner |
| 12 | 8M3167 | Piston body | 6.25QQ bore, PC [3S4066] |
| 12 | 7N4515 | Piston body | 6.2500 bore, PC [3S5502] rectangular compression ring |
| 12 | 7N5036 | Piston body | 6.2500 bore, PC [7N5037] keystone compression ring |
| 12 | 5H1085 | Piston pin | 2.4 dia; use with 8M3167 piston |
| 12 | 7N9810 | Piston pin | 2.5 dia; use with 7N4515f 7N5Q36 piston [4L3843] |
| 24 | 7M4926 | Retainer piston pin | use with 2.4DD dia pin [repl 6B2291] |
| 12 | 1W5105 | Ring set | 6.25QQ bore, use with 8M3167f 7N4515 piston [9S8973]; rectangular comp ring |
| 12 | 1N3601 | Ring set | 6.25QQ bore, use with 7N5036 piston; keystone comp ring |
| 12 | 8N9174 | Cylinder liner | 6.25QQ bore |
| 12 | 5P8970 | Cylinder liner oring kit | For one liner, contains: |3) 6L7815, (1) 8N4708 |
| 36 | 6L7815 | Cylinder liner oring | Lower liner seal; contained in 5P8970 seal kit |
| 12 | 8N4708 | Cylinder liner oring | Upper filler band; contained in 5P897Q seal kit |
BEARINGS
| 7 | 8N7764 | Bearing main pair | Std, 5.750 journal, 6.3730 housing bore, 2.130 length |
| 7 | 8N776410-F | Bearing main pair | .010 |
| 7 | 8N7765 | Bearing main pair | .025 |
| 7 | 8N7766 | Bearing main pair | .050 |
| 2 | 4L4653 | Thrust washer | 0.284 thick |
| 12 | 8N7769 | Bearing rod pair | Std, 5.Q00 journal 5.385Q housing bore, 1.862 length |
| 12 | 8N776910-F | Bearing rod pair | .010 |
| 12 | 8N7770 | Bearing rod pair | .025 |
| 12 | 8N7771 | Bearing rod pair | .050 |
| 7 | 5L2894 | Bearing cam | |
| 12 | 8N2275 | Bushing con rod | 2.450 IDr 2.678 0Df 2.250 length |
GASKET & SEALS
| CATGASKET | NOTE | For gasket sets: Call with Serial and Arrangement Numbers | |
| 6 | 3N3220 | Gasket cylinder head | Metal cladr use with 6L4497 gasket |
| 6 | 3N3220CP | Gasket cylinder head | Soft, use with 6L4497 gasket |
| 6 | 6L4497 | Gasket push rod oil | Push rod ail return, use with 3N322Q ar 3N3220CP |
| 6 | 6L3352 | Gasket valve cover | |
| 6 | 2N3597 | Seal valve cover | |
| 1 | 4W2606 | Seal crankshaft | Directional CW |
| 1 | 4W2607 | Seal crankshaft | Directional CCW |
| 2 | 3N9160-B | Ring crankshaft | Piston ring type |
| 1 | 8L5457 | Gasket oil pan |
CAMSHAFT
| CAMSHAFT | CAMSHAFT | Remanufactured available, call with casting number |
| 24 1021561 | Lifter | (repl 5L5486) |
VALVE TRAIN
| CYLHEAD | NOTE | Far complete and bare cylinder heads – Refer to Cylinder Head Catalog or Call with casting |
| D353HEAD1 | NOTE: | Tapered groove valve stem with 0.4955 dia and 3 locks each |
| 12 7M7817 | Valve intake | 2.505 head, 0.4955 stem, tapered groove [4H9805,6H3186,1M7452] |
| 12 8N3723 | Valve exhaust | 2.340 head, 0.4955 stemr tapered groove [4H9804r 6H3187f 8H7Q97f 4N6883f 3N1141] |
| Caterpillar | D398/48.8L | 12 Cylinder | |||
| Diesel 2976 CID | (Continued) | Bore 6.250 Stroke 8.000 | |||
| 24 | 7S6323 | Valve spring | Single spring | ||
| Single spring, use with 7N7639 rotocap | |||||
| 24 | 4F5408-F | Valve spring | Outer, 1.641 0D, 2.421 free | ||
| Dual spring | |||||
| 24 | 4F5409-F | Valve spring | Inner, 1.145 0D# 2.359 free | ||
| Dual spring | |||||
| 12 | 4N3664 | Valve guide | Intake; non flanged, use with 3N1414 spacer; for 0.4955 stem dia, 5.045 length | ||
| 12 | 6N8847 | Valve guide | Exhaust; non flanged, use with 3N1414 spacer; for D.4955 stem dia, 5.438 length | ||
| 24 | 3N1414 | Spacer | Use with non-flanged guide | ||
| 72 | 3B1143 | Valve lock | No bead, for tapered valve stem, for 0.4995 stem | ||
| 24 | 7N7639 | Rotator | [rep( 8M7637r4S7468] | ||
| Use with single valve spring | |||||
| 24 | 7F7666-B | Rotator | |||
| Use with dual valve springs | |||||
| 24 | 3H5867 | Retainer | |||
| 12 used; 6 used on intake with 3B1142 used on exhaust | |||||
| 12 | 3B1142 | Retainer | |||
| 6 used on exhaust with 3H5867 retainer on intake | |||||
| 12 | 5H1464 | Valve seat | Intake | ||
| use with 6H8514 cylinder head | |||||
| 12 | 5S1757 | Valve seat | Intake | ||
| 12 | 5H1463 | Valve seat | Exhaust | ||
| use with 6H8514 cylinder head | |||||
| 12 | 8M4014 | Valve seat | Exhaust | ||
| D353HEAD2 | NOTE: | Two groove valve stem with 0.3717 dia and 2 locks each | |||
| 12 | 1W8606 | Valve intake | 2.505 head, 0.3717 stem, 2 groove | ||
| 12 | 2W3211 | Valve exhaust | 2.35Q head, 0.3717 stem, 2 groove | ||
| 12 | 1W1822 | Valve exhaust | 2.350 head, 0.3717 stem, 2 groove | ||
| 24 | 9M5349 | Valve spring | Inner, 1.125 0D# 2.201 free | ||
| 24 | 9M5350 | Valve spring | Outer, 1.654 0Df 2.574 free | ||
| 12 | 2N9298 | Valve guide | Intake; for 0.3717 stem, 5.065 length | ||
| 12 | 2N9299 | Valve guide | Exhaust; for 0.3717 stem, 5.450 length | ||
| 24 | 3N1414 | Spacer | Use with non-flanged guide | ||
| 48 | 2A4429 | Valve lock | 0.372 stem dia, 2Gr 7 degree | ||
| 24 | 7N7639 | Rotator | [repl 8M7637,4S7468] | ||
| 12 | 1W3062 | Retainer | Intake; includes 8N7780 shield | ||
| 12 | 2N9297 | Retainer | Exhaust | ||
| 12 | 5S1757 | Valve seat | Intake | ||
| 12 | 8M4014 | Valve seat | Exhaust | ||
| FUEL | INJECTOR | |||||
| 12 | 7M7431 | Nozzle service group | Contains： capsule nozzle, orings, seal ring | ||
| COOLING SYSTEM | |||||
| 4 | 6I4954-F | Thermostat | Used with 4W9135 water connector group (4W4011) | ||
| 4 | 4W4794 | Thermostat | Used with 7W8066 water lines group only, 180 degree [new# 2477133] | ||
| 4 | 3S9643-F | Seal thermostat | Use with 6I4954 and 4W4794 thermostats | ||
| TU^OIAIR | |||||
| TURBO | TURBOCHARGER | New or remamifactured available, call far pricing | |||
| BLOCK | I | ||||
| 8N6938 | Insert block | 0.0625, stainless steel | |||
| 1W6267 | Sleeve block | Z stepped | |||
| 5P0936 | Sleeve block | L type, Cast Iron | |||
| Caterpillar G398/48.8L | 12 Cylinder | |
| Gas | Bore 6.250 | |
| 2976 CID, Natural Gas | Stroke 8.000 |
CYLINDER KIT
| 12 | PLG3S1824 | Cylinder kit | 7.0:1 CR |
| 12 | PLG3S1826 | Cylinder kit | 10.0:1 CR |
| 12 | 3S1824 | Piston body | 7.0:1 CR |
| 12 | 3S1826 | Piston body | 10.0:1 CR |
| 12 | 7N9810 | Piston pin | 2.5 dia; use with 7N4515f 7N5036 piston [4L3843] |
| 24 | 7M4926 | Retainer piston pin | use with 2.400 dia pin [repl 6B2291] |
| 12 | 1W6055 | Ring set | |
| 12 | 8N9174 | Cylinder liner | 6.2500 bore |
| 12 | 5P8970 | Cylinder liner oring kit | Far ane liner, contains: (3) 6L7815r (1) 8N4708 |
BEARINGS
| 7 | 8N7764 | Bearing main pair | Stdr 5.750 jaurnal, 6.373Q housing borer 2.130 length |
| 7 | 8N7765 | Bearing main pair | .025 |
| 7 | 8N7766 | Bearing main pair | .050 |
| 2 | 4L4653 | Thrust washer | 0.284 thick |
| 12 | 8N7769 | Bearing rod pair | Stdr 5.Q00 journal, 5.385Q housing borer 1.862 length |
| 12 | 8N7770 | Bearing rod pair | .025 |
| 12 | 8N7771 | Bearing rod pair | .050 |
| 7 | 5L2894 | Bearing cam | |
| 12 | 8N2275 | Bushing con rod | 2.450 ID, 2.678 0D, 2.250 length |
GASKET & SEALS
| 1 | 398081 | Set overhaul | 73B1-9Q5f Non Turbocharged |
| 1 | 398081CP | Set overhaul | 73B1-9Q5, Non turbocharged. Composite head gasket |
| 1 | 398161 | Set overhaul | 73 的 06-Up, Non Turbochdrged |
| 1 | 398161CP | Set overhaul | 73B906-Upr Non Turbocharged, Composite head gasket |
| 1 | 398091 | Set overhaul | 73B906-Upr Turbocharged, Aftercooled |
| 1 | 398091CP | Set overhaul | 73B906-Up, Turbocharged, Aftercaolded, Composite head gasket |
| 1 | 398082 | Set inframe | 73B1-9Q5, Non Turbocharged |
| 1 | 398082CP | Set inframe | 73B1-9Q5f Non turbocharged. Composite head gasket |
| 1 | 398162 | Set inframe | 73 的 06-Up, Non Turbochdrged |
| 1 | 398162CP | Set inframe | 73B906-Up, Non Turbocharged, Composite head gasket |
| 1 | 398092 | Set inframe | 73B906-Upr Turbocharged, Aftercooled |
| 1 | 398092CP | Set inframe | 73B906-Upr Turbocharged, Aftercooldedr Composite head gasket |
| 1 | 398083 | Set cylinder head | 73B1-9Q5, Non Turbocharged, multiple |
| 1 | 398083CP | Set cylinder head | 73B1-9Q5, Non Turbocharged, Composite head gasket, multiple |
| 1 | 398163 | Set cylinder head | 73 的 06-Up, Non Turbochdrged, multiple |
| 1 | 398163CP | Set cylinder head | 73B906-Upr Non Turbocharged, Composite head gasket multiple |
| 1 | 398093 | Set cylinder head | 73 的 06-Up. Turbtichdrged, Afte 咖 d6d, multiple |
| 1 | 398093CP | Set cylinder head | 73明06-Up, Turbocharged, Aftercoolded, Composite head gasket, multiple |
| 12 | 399054 | Set cylinder head | 49C1-Upr 72B1-Upr 73B1-Up: Single head, inlcudes ferrule assemblies |
| 12 | 399054CP | Set cylinder head | 49C1-Upr 72B1-Upr 73B1-Up: Single head, includes ferrule assemblies. Composite head gasket |
| 12 | 3N3220 | Gasket cylinder head | Metal cladr use with 6L4497 gasket |
| Caterpillar G398/48.8L | 12 Cylinder | |||
| Gas (Continued) | Bore 6.250 | |||
| 2976 CID, Natural Gas | Stroke 8.000 | |||
| 12 3N3220CP | Gasket cylinder head | Soft, use with 6L4497 gasket | ||
| 6 6L3352 | Gasket valve cover | |||
| 6 2N3597 | Seal valve cover | |||
| 1 8L5457 | Gasket oil pan | |||
| 6 1F9223 | Gasket side door | |||
| 6 1F4419 | Gasket water cover | |||
| 1 4W2606 | Seal crankshaft | Directional CW | ||
| 1 4W2568 | Seal group | Front, standard rotation | ||
| 1 4W2570 | Seal group | Front, opposite rotation | ||
| 1 4W2607 | Seal crankshaft | Directional CCW | ||
| 1 4W2569 | Seal group | Rear, standard rotation | ||
| 1 4W2571 | Seal group | Rear, opposite rotation | ||
| CAMSHAFT | ||||
| 24 1021561 | Litter | (repl 5L5486) | ||
| 24 3F7445 | Bushing rocker arm | |||
| 24 8F8858 | Button rocker arm | |||
| 24 9F7707 | Ring button retaining | For 8F8858 | ||
| 24 1A0744 | Screw rocker arm adj | |||
| 24 1B4204 | Nut | Rocker arm adjusting | ||
| VALVE TRAIN | ||||
| CYLHEAD | NOTE | For complete and bare cylinder heads – Refer to Cylinder Head Catalog or Call with casting | ||
| D353HEAD2 | NOTE: | Two groove valve stem with 0.3717 dia and 2 locks each | ||
| Head using 3/8″ stem valves | ||||
| 12 1W8606 | Valve intake | 2.505 head, 0.3717 stem, 2 groove | ||
| 12 2W3211 | Valve exhaust | 2.350 head, 0.3717 stem, 2 groove | ||
| 24 7S6323 | Valve spring | Single spring | ||
| Use With 7N7639 Rotocoil | ||||
| 24 9M5349 | Valve spring | Inner, 1.125 ODf 2.201 free | ||
| Use With 7N7639 Rotocoil | ||||
| 24 4F5409 | Valve spring | Double, inner | ||
| Use With 7F7666 Rotocoil | ||||
| 24 9M5350 | Valve spring | Outer, 1.654 0Df 2.574 free | ||
| Use With 7N7639 Rotacoil | ||||
| 24 4F5408 | Valve spring | |||
| Use With 7F7666 Rotocoil | ||||
| 12 2N9298 | Valve guide | Intake; for 0.3717 stem, 5.065 length | ||
| 12 2N9299 | Valve guide | Exhaust; for 0.3717 stem, 5.450 length | ||
| 24 3N1414 | Spacer | Use with non-flanged guide | ||
| 48 2A4429 | Valve lock | 0.372 stem dia, 2G, 7 degree | ||
| 24 7N7639 | Rotator | [repl 8M7637,4S7468] | ||
| Use With Correct Springs | ||||
| 24 7F7666 | Rotocoil | |||
| Use With Correct Springs | ||||
| 12 8N7780 | Shield | |||
| 12 1W3062 | Retainer | Intake; includes 8N7780 shield | ||
| 12 2N9297 | Retainer | Exhaust | ||
| 12 5S1757 | Valve seat | Intake | ||
| 12 1S5738 | Valve insert | Exhaust | ||
| Caterpillar G398/48.8L | 12 Cylinder | |||||
| Gas (Continued) | Bore 6.250 | |||||
| 2976 CID, Natural Gas | Stroke 8.000 | |||||
| D353HEAD1 | NOTE: | Tapered groove valve stem with 0.4955 dia and 3 locks each | ||||
| Head using 1/2″ stem valves | ||||||
| 12 7M7817 | Valve intake | 2.505 head, 0.4955 stem, tapered groove [4H9805, 6H3186,1M7452] | ||||
| 12 8N3723 | Valve exhaust | 2.340 head, 0.4955 stem, tapered groove [4H9804, 6H3187,8H7097,4N6883, 3N1141] | ||||
| esn 73B1-81 | ||||||
| 12 5S5323 | Valve exhaust | |||||
| With Correct Serial Numbers | ||||||
| 24 7S6323 | Valve spring | Single spring | ||||
| Use With 7N7639 Rotacoil | ||||||
| 24 9M5349 | Valve spring | Inner, 1.125 0D# 2.201 free | ||||
| Use With 7N7639 Ratacail | ||||||
| 24 4F5409 | Valve spring | Double, inner | ||||
| Use With 7F7666 Ratacail | ||||||
| 24 9M5350 | Valve spring | Outer, 1.654 0Df 2.574 free | ||||
| Use With 7N7639 Ratacail | ||||||
| 24 4F5408 | Valve spring | |||||
| Use With 7F7666 Rotocoil | ||||||
| 12 4N3664 | Valve guide | Intake； non flanged, use with 3N1414 spacer; for Q.4955 stem dia, 5.045 length | ||||
| 12 6N8847 | Valve guide | Exhaust; non flanged, use with 3N1414 spacer； for 0.4955 stem dia, 5.438 length | ||||
| 24 3N1414 | Spacer | Use with non-flanged guide | ||||
| 72 3B1143 | Valve lock | No bead, for tapered valve stem, for 0.4995 stem | ||||
| 24 7N7639 | Rotator | [repl 8M7637,4S7468] | ||||
| Use With Correct Springs | ||||||
| 24 7F7666 | Rotocoil | |||||
| Use With Correct Springs | ||||||
| 12 8N7780 | Shield | |||||
| 12 1W3062 | Retainer | Intake; includes 8N778Q shield | ||||
| 12 2N9297 | Retainer | Exhaust | ||||
| 12 5S1757 | Valve seat | Intake | ||||
| 12 1S5738 | Valve insert | Exhaust | ||||
| 48 3B0645 | Plug cup | |||||
| 12 7L0918 | Spark plug adapter | |||||
| 12 6L1576 | Gasket spark plug adp | Metal gasket | ||||
| 12 6L7816 | Seal spark plug adp | |||||
| 48 5H7071 | Water director | |||||
| CRANKSHAFT | ||||||
| 1 4W2566 | Adapter crankshaft seal | Front, standard rotation | ||||
| 1 4W2567 | Adapter crankshaft seal | Rear, standard rotation | ||||
| 2 3N9160 | Seal ring crankshaft | Piston ring type | ||||
| 2 5L2093 | Adapter gasket | |||||
| 2 8L3972 | Baffle | |||||
| OIL 1 LUBE SYSTEM | ||||||
| 1 6N9235 | Oil cooler | Core | ||||
| COOLING SYSTEM | ||||||
| 4 6I4954 | Thermostat | 170F degree | ||||
| 4 4W4794 | Thermostat | Used with 7W8066 water lines group only, 180 degree [new# 2477133] | ||||
| 4 7C3095 | Thermostat | 190 degrees [new# 2477133] | ||||
| 4 測 741 | Gasket thermostat housi | |||||
| 4 3S9643 | Thermostat seal | |||||
| Caterpillar | G398/48.8L | 12 Cylinder | |||
| Gas | (Continued) | Bore 6.250 | |||
| 2976 CID, Natural Gas | Stroke 8.000 | ||||
| 3S1723 | Set water pump | All engines with large case seal | |||
| Check Serial Number | |||||
| 1 | 6V5426 | Set water pump | |||
| 73B 1 ■ 905 | |||||
| 1 | 6V6384 | Set water pump | |||
| 73B 906-1310 | |||||
| 1 | 6V6385 | Set water pump | |||
| 73B1311-Up | |||||
| 1 | 1W7080 | Kit water pump rebuild | Contains water pump shaft 5N4378 | ||
| 1 | 4N7526 | Seal assembly | |||
| 1 | 6N9313 | Seal assembly | |||
| 1 | 5N4378 | Shaft water pump | Long shaft | ||
| 1 | 5N1883 | Shaft water pump | Short shaft | ||
| 1 | 1H8278 | Seal oring | |||
| 1 | 2S3966 | Ring | Use with 4N7526 | ||
| 8 | 5L5840 | Washer sealing | |||
| 1 | 3S3535 | Seal rubber | Use with 2S3966 | ||
| 4L6706 | Gasket shim | Use 1 to 10 | |||
| 1 | 5B3265 | Gasket drain plug | |||
| 1 | 4L3437 | Gasket water pump mtg | |||
| 1 | 4L3756 | Bearing water pump | |||
| 2 | 5L2660 | Bearing water pump | Fresh water pump; 1 in water pump, 1 in carrier | ||
| 7F7510 | Lock | ||||
| 8 | 8J6775 | Seal | |||
| 1 | 4L9965 | Gasket retainer | |||
| 1 | 2N2560 | Seal shaft oil | |||
| 1 | 6N4744 | Adapter | Use with6N9313 | ||
| 1 | 6N5476 | Seal ring | Metal, Use with 6N9313 | ||
| 1 | 6N5475 | Seal ring | Rubber, Use with 6N9313 | ||
| 1 | 3H2018 | Nut | |||
| 1 | 3F2771 | Cotter pin | |||
| 12 | 5L9371 | Water tube | Cast iron | ||
| 12 | 6L7817 | Seal ring water tube | |||
| 1 | 3N4365 | Aftercooler element | Fresh water | ||
| 1 | 3N4366 | Aftercooler element | Fresh water | ||
| TUR 的 IAIR | |||||
| 8 | 5M2894 | Washer manifold exhaus hardened, for 3/81‘ studs (22132″ x 13/32″ x .109″ thick) | |||
| BLOCK | |||||
| 8N6938 | Insert block | Stainless steel .0625″ | |||
| 1W6265 | Sleeve block | Z stepped | |||
| 1W6266 | Sleeve block | Z stepped | |||
| 1W6267 | Sleeve block | Z stepped | |||
| 5P0936 | Sleeve block | L type, Cast Iron | |||
| Caterpillar D399 / 64.4L | 16 Cylinder | |
| Diesel | Bore 6.250 | |
| 3928 CID | Stroke 8.000 |
CYLINDER KIT
| 16 | PLG7N4515 | Cylinder kit | 6.25QQ bore, rectangular ring [7N4515 piston, 1W5105 rings, 7N981Q pin, 7M4926 retainers, 8N9174 liner] |
| 16 | PLG7N5036 | Cylinder kit | 6.25QQ bore, keystone ring [7N5Q3G piston, 1N3601 rings, 7N981Q pin, 7M492G retainers, 8N9174 liner |
| 16 | 8M3167 | Piston body | 6.25QQ bore, PC [3S4066] |
| 16 | 7N4515 | Piston body | 6.2500 bore, PC [3S5502] rectangular compression ring |
| 16 | 7N5036 | Piston body | 6.2500 bore, PC [7N5037] keystone compression ring |
| 16 | 5H1085 | Piston pin | 2.4 dia; use with 8M3167 piston |
| 16 | 7N9810 | Piston pin | 2.5 dia; use with 7N4515f 7N5Q36 piston [4L3843] |
| 32 | 7M4926 | Retainer piston pin | use with 2.4DD dia pin [repl 6B2291] |
| 16 | 1W5105 | Ring set | 6.25QQ bore, use with 8M3167f 7N4515 piston [9S8973]; rectangular comp ring |
| 16 | 1N3601 | Ring set | 6.25QQ bore, use with 7N5036 piston; keystone comp ring |
| 16 | 8N9174 | Cylinder liner | 6.25QQ bore |
| 16 | 5P8970 | Cylinder liner oring kit | For one liner, contains: |3) 6L7815, (1) 8N4708 |
| 48 | 6L7815 | Cylinder liner oring | Lower liner seal; contained in 5P8970 seal kit |
| 16 | 8N4708 | Cylinder liner oring | Upper filler band; contained in 5P897Q seal kit |
BEARINGS
| 9 | 8N7764 | Bearing main pair | Std, 5.750 journal, 6.3730 housing bore, 2.130 length |
| 9 | 8N776410-F | Bearing main pair | .010 |
| 9 | 8N7765 | Bearing main pair | .025 |
| 9 | 8N7766 | Bearing main pair | .050 |
| 2 | 4L4653 | Thrust washer | 0.284 thick |
| 16 | 8N7769 | Bearing rod pair | Std, 5.Q00 journal 5.385Q housing bore, 1.862 length |
| 16 | 8N776910-F | Bearing rod pair | .010 |
| 16 | 8N7770 | Bearing rod pair | .025 |
| 16 | 8N7771 | Bearing rod pair | .050 |
| 9 | 5L2894 | Bearing cam | |
| 16 | 8N2275 | Bushing con rod | 2.450 IDr 2.678 0Df 2.250 length |
GASKET & SEALS
| CATGASKET | NOTE | For gasket sets: Call with Serial and Arrangement Numbers |
| 8 3N3220 | Gasket cylinder head | Metal cladr use with 6L4497 gasket |
| 8 3N3220CP | Gasket cylinder head | Soft, use with 6L4497 gasket |
| 8 6L4497 | Gasket push rod oil | Push rod ail return, use with 3N322Q ar 3N3220CP |
| 8 6L3352 | Gasket valve cover | |
| 8 2N3597 | Seal valve cover | |
| 1 4W2606 | Seal crankshaft | Directional CW |
| 1 4W2607 | Seal crankshaft | Directional CCW |
| 2 3N9160-B | Ring crankshaft | Piston ring type |
| 1 8L5457 | Gasket oil pan |
CAMSHAFT
| CAMSHAFT | CAMSHAFT | Remanufactured available, call with casting number |
| 32 1021561 | Lifter | (repl 5L5486) |
VALVE TRAIN
| CYLHEAD | NOTE | Far complete and bare cylinder heads – Refer to Cylinder Head Catalog or Call with casting |
| D353HEAD1 | NOTE: | Tapered groove valve stem with 0.4955 dia and 3 locks each |
| 16 7M7817 | Valve intake | 2.505 head, 0.4955 stem, tapered groove [4H9805,6H3186,1M7452] |
| 16 8N3723 | Valve exhaust | 2.340 head, 0.4955 stemr tapered groove [4H9804r 6H3187f 8H7Q97f 4N6883f 3N1141] |
| Caterpillar D399 / 64.4L | 16 Cylinder | |||||
| Diesel (Continued) | Bore 6.250 | |||||
| 3928 CID | Stroke 8.000 | |||||
| 32 | 7S6323 | Valve spring | Single spring | |||
| Single spring, use with 7N7639 rotocap | ||||||
| 32 | 4F5408-F | Valve spring | Outer, 1.641 0D, 2.421 free | |||
| Dual spring | ||||||
| 32 | 4F5409-F | Valve spring | Inner, 1.145 0D# 2.359 free | |||
| Dual spring | ||||||
| 16 | 4N3664 | Valve guide | Intake; non flanged, use with 3N1414 spacer; for 0.4955 stem dia, 5.045 length | |||
| 16 | 6N8847 | Valve guide | Exhaust; non flanged, use with 3N1414 spacer; for D.4955 stem dia, 5.438 length | |||
| 32 | 3N1414 | Spacer | Use with non-flanged guide | |||
| 96 | 3B1143 | Valve lock | No bead, for tapered valve stem, for 0.4995 stem | |||
| 32 | 7N7639 | Rotator | [repl 8M7637,4S7468] | |||
| Use with single valve spring | ||||||
| 32 | 7F7666-B | Rotator | ||||
| Use with dual valve springs | ||||||
| 32 | 3H5867 | Retainer | ||||
| 12 used; 6 used on intake with 3B1142 used on exhaust | ||||||
| 16 | 3B1142 | Retainer | ||||
| 6 used on exhaust with 3H5867 retainer on intake | ||||||
| 16 | 5H1464 | Valve seat | Intake | |||
| use with 6H8514 cylinder head | ||||||
| 16 | 5S1757 | Valve seat | Intake | |||
| 16 | 5H1463 | Valve seat | Exhaust | |||
| use with 6H8514 cylinder head | ||||||
| 16 | 8M4014 | Valve seat | Exhaust | |||
| D353HEAD2 | NOTE: | Two groove valve stem with 0.3717 dia and 2 locks each | ||||
| 16 | 1W8606 | Valve intake | 2.505 head, 0.3717 stem, 2 groove | |||
| 16 | 2W3211 | Valve exhaust | 2.35Q head, 0.3717 stem, 2 groove | |||
| 16 | 1W1822 | Valve exhaust | 2.350 head, 0.3717 stem, 2 groove | |||
| 32 | 9M5349 | Valve spring | Inner, 1.125 0D# 2.201 free | |||
| 32 | 9M5350 | Valve spring | Outer, 1.654 0D, 2.574 free | |||
| 16 | 2N9298 | Valve guide | Intake; for 0.3717 stem, 5.065 length | |||
| 16 | 2N9299 | Valve guide | Exhaust; for 0.3717 stem, 5.450 length | |||
| 32 | 3N1414 | Spacer | Use with non-flanged guide | |||
| 64 | 2A4429 | Valve lock | 0.372 stem dia, 2Gr 7 degree | |||
| 32 | 7N7639 | Rotator | [repl 8M7637,4S7468] | |||
| 16 | 1W3062 | Retainer | Intake; includes 8N7780 shield | |||
| 16 | 2N9297 | Retainer | Exhaust | |||
| 16 | 5S1757 | Valve seat | Intake | |||
| 16 | 8M4014 | Valve seat | Exhaust | |||
| FUEL | INJECTOR | ||||||
| 16 | 7M7431 | Nozzle service group | Contains： capsule nozzle, orings, seal ring | |||
| COOLING SYSTEM | ||||||
| 4 | 6I4954-F | Thermostat | Used with 4W9135 water connector group (4W4011) | |||
| 4 | 4W4794 | Thermostat | Used with 7W8066 water lines group only, 180 degree [new# 2477133] | |||
| 4 | 4W4841 | Thermostat | 190 degree | |||
| 4 | 3S9643-F | Seal thermostat | Use with 6I4954 and 4W4794 thermostats | |||
| TUR的丨AIR | ||||||
| TURBO | TURBOCHARGER | New or remanufactured available, call for pricing | ||||
| BLOCK | ||||||
| 8N6938 | Insert block | 0.0625, stainless steel | ||||
| 1W6267 | Sleeve block | Z stepped | ||||
| 5P0936 | Sleeve block | L type, Cast Iron | ||||
| Caterpillar G399/64.4L | 16 Cylinder | |
| Gas | Bore 6.250 | |
| 3928 CID, Natural Gas | Stroke 8.000 |
CYLINDER KIT
| 16 | PLG3S1824 | Cylinder kit | 7.0:1 CR |
| 16 | PLG3S1826 | Cylinder kit | 10.0:1 CR |
| 16 | 3S1824 | Piston body | 7.0:1 CR |
| 16 | 3S1826 | Piston body | 10.0:1 CR |
| 16 | 7N9810 | Piston pin | 2.5 dia; use with 7N4515f 7N5036 piston [4L3843] |
| 32 | 7M4926 | Retainer piston pin | use with 2.400 dia pin [repl 6B2291] |
| 16 | 1W6055 | Ring set | |
| 16 | 8N9174 | Cylinder liner | 6.2500 bore |
| 16 | 5P8970 | Cylinder liner oring kit | For one liner, contains: (3) 6L7815r (1) 8N4708 |
BEARINGS
| 9 | 8N7764 | Bearing main pair | Stdr 5.750 journal 6.373Q housing bore, 2.130 length |
| 9 | 8N7765 | Bearing main pair | .025 |
| 9 | 8N7766 | Bearing main pair | .Q5Q |
| 2 | 4L4653 | Thrust washer | 0.284 thick |
| 16 | 8N7769 | Bearing rod pair | Stdr 5.000 journal 5.385Q housing bore, 1.862 length |
| 16 | 8N7770 | Bearing rod pair | .025 |
| 16 | 8N7771 | Bearing rod pair | .050 |
| 9 | 5L2894 | Bearing cam | |
| 16 | 8N2275 | Bushing con rod | 2.450 IDr 2.678 0Df 2.250 length |
GASKET & SEALS
| 1 | 9S4317 | Set overhaul | 49C1-261 |
| 1 | 399121 | Set overhaul | 49C261-Upr Non Turbocharged |
| 1 | 399121CP | Set overhaul | 49C261-Up, Non turbocharged. Composite head gasket |
| 1 | 399131 | Set overhaul | 49C261-Up, Turbocharged, Afteraaoled |
| 1 | 399131CP | Set overhaul | 49C261-Upr Turbocharged, Aftercooled, Composite head gasket |
| 1 | 399122 | Set inframe | 49C261-Up, Non Turbocharged |
| 1 | 399122CP | Set inframe | 49C261-Up, Non turbocharged. Composite head gasket |
| 1 | 399132 | Set inframe | 49C261-Upr Turbocharged, Aftercooled |
| 1 | 399132CP | Set inframe | 49C261-Upr Turbocharged, Aftercooled, Composite head gasket |
| 1 | 9S4316 | Set cylinder head | 49C1-261f Multiple |
| 1 | 399123 | Set cylinder head | 49C261-Upr Non Turbocharged, multiple |
| 1 | 399123CP | Set cylinder head | 49C261-Upr Non turbocharged. Composite head gasket multiple |
| 1 | 399133 | Set cylinder head | 49C261-Up, Turbocharged, Afteraaoled, multiple |
| 1 | 399133CP | Set cylinder head | 49C261-Upr Turbocharged, Aftercooled, Composite head gasket, multiple |
| 16 | 399054 | Set cylinder head | 49C1-Upr 72B1-Upr 73B1-Up: Single head, inlcudes ferrule assemblies |
| 16 | 399054CP | Set cylinder head | 49C1-Upr 72B1-Upr 73B1-Up: Single head, includes ferrule assemblies. Composite head gasket |
| 16 | 3N3220 | Gasket cylinder head | Metal cladr use with 6L4497 gasket |
| 16 | 3N3220CP | Gasket cylinder head | Soft, use with 6L4497 gasket |
| 8 | 6L3352 | Gasket valve cover | |
| 8 | 2N3597 | Seal valve cover | |
| 1 | 8L5457 | Gasket oil pan | |