Description
MUDKING MUD PUMP PARTS LIST
<div class=”table-page”>
NATIONALJWS165/340
| Liners & Liner Packing | ||
| SIZES | LINER | LINER PACKING |
| 3” | MK-0240-30 | MK-1712064 |
| 3½” | MK-0240-34 | MK-1712064 |
| 4” | MK-0240-40 | MK-1712064 |
| 4½” | MK-0240-44 | MK-1712064 |
| Gaskets | |
| JWS165 | MK-2410031-429 |
| JWS340 | MK-1718265 |
| SERIES | KING – G2 | KING – G2 |
| SUCTION | DISCHARGE | |
| VALVE (Urethane Insert) | MK-1561575 | MK-1561575 |
| VALVE (Rubber Insert) | N/A | N/A |
| VALVE SEAT | MK-1561571 | MK-1561572 |
| VALVE SPRING | MK-1712211 | MK-1712206 |
| VALVE INSERT (Urethane) | MK-1561577 | MK-1561577 |
| VALVE INSERT (Red Thunder) | N/A | N/A |
| VALVE INSERT (Rubber) | N/A | N/A |
| VALVE SEAT PULLER HEAD | N/A | N/A |
| Piston Size | Red Thunder Bonded Pistons | Imperial Piston | Imperial Rubber Kits | Rubber Bonded | Long Life (Urethane) |
| 3” | N/A | MK-I30HK10 | MK-I30HK | N/A | N/A |
| 3½” | N/A | MK-I34HK10 | MK-I34HK | N/A | N/A |
| 4” | MK-RT-400 | MK-I40HK10 | MK-I40HB | MK-RB-400-10 | MK-LL-400-10 |
| 4½” | MK-RT-440 | MK-I44HK10 | MK-I44HB | MK-RB-440-10 | MK-LL-440-10 |
* ¼ Size are available upon request
| RODS | |||||
| PISTON ROD | SUB ROD | EXTENSION ROD | ROD CLAMP | PISTON ROD NUT | |
| ONE PIECE | MK-0238 | MK-16-0238 | MK-24-0238 | MK-7403224 | |
| TWO PIECE | MK-0238-A | MK-0238-B | MK-16-0238 | MK-24-0238 | MK-7403224 |
NATIONAL
JWS400
| Liners & Liner Packing | ||
| SIZES | LINER | LINER PACKING |
| 4” | MK-0237-40 | MKG-0272 |
| 4½” | MK-0237-44 | MKG-0274 |
| 5” | MK-0237-50 | MKG-0276 |
| 5½” | MK-0237-54 | MKG-0278 |
Gaskets
Valve Cover Gasket
MK-1715146
Cylinder Head Gasket
N/A
| SERIES | KING – G2 | KING – G2 |
| SUCTION | DISCHARGE | |
| VALVE (Urethane Insert) | MK-1561575 | MK-1561575 |
| VALVE (Rubber Insert) | N/A | N/A |
| VALVE SEAT | MK-1561561 | MK-1561569 |
| VALVE SPRING | MK-G-1560698 | MK-1717296 |
| VALVE INSERT (Urethane) | MK-1561577 | MK-1561577 |
| VALVE INSERT (Red Thunder) | N/A | N/A |
| VALVE INSERT (Rubber) | N/A | N/A |
| VALVE SEAT PULLER HEAD | N/A | N/A |
| Piston Size | Red Thunder Bonded Pistons | Imperial Piston | Imperial Rubber Kits | Rubber Bonded | Long Life (Urethane) |
| 4” | MK-RT-400 | MK-I40HK10 | MK-I40HK | MK-RB-400 | MK-LL-400 |
| 4½” | MK-RT-440 | MK-I44HK10 | MK-I44HK | MK-RB-440 | MK-LL-440 |
| 5” | MK-RT-500 | MK-I50HK10 | MK-I50HK | MK-RB-500 | MK-LL-500 |
| 5½” | MK-RT-540 | MK-I54HK10 | MK-I54HK | MK-RB-540 | MK-LL-540 |
* ¼ Size are available upon request
RODS
PISTON ROD
EXTENSION
SUB ROD nnr.
ROD
ROD CLAMP
PISTON ROD NUT
PART NO.
MK-2239-A MK-2239-B MK-16-2239 MK-24-2239 MK-7403224
NATIONAL
7-P-50
| Liners & Liner Packing | ||
| SIZES | LINER | LINER PACKING |
| 4” | MK-0257-40 | MKG-0272 |
| 4½” | MK-0257-44 | MKG-0274 |
| 5” | MK-0257-50 | MKG-0276 |
| 5½” | MK-0257-54 | MKG-0278 |
| 6” | MK-0257-60 | MKG-0280 |
| 6¼” | MK-0257-62 | MKG-0268 |
Gaskets
Valve Cover Gasket
MK-61-0253
Cylinder Head Gasket
N/A
| SERIES | KING – 4 WEB | KING – FULL OPEN |
| VALVE (Urethane Insert) | MK-U5B-05 | MK-5FO-V1 |
| VALVE (Rubber Insert) | MK-5B-05 | N/A |
| VALVE SEAT | MK-5DD-B3 | MK-5FO-S3 |
| VALVE SPRING | MK-5710-111 | MK-5710-30 |
| VALVE INSERT (Urethane) | MK-UDD-5B | MK-5FO-SI |
| VALVE INSERT (Rubber) | MK-DD-5B | N/A |
| VALVE SEAT PULLER HEAD | MK-1700-5 | MK-1700-5FO |
| Piston Size | Red Thunder Bonded Pistons | Imperial Piston | Imperial Rubber Kits | Rubber Bonded | Long Life (Urethane) |
| 4” | MK-RT-400 | MK-I40HK14/15 | MK-I40HK | MK-RB-400 | MK-LL-400 |
| 4½” | MK-RT-440 | MK-I44HK14/15 | MK-I44HK | MK-RB-440 | MK-LL-440 |
| 5” | MK-RT-500 | MK-I50HB14/15 | MK-I50HB | MK-RB-500 | MK-LL-500 |
| 5½” | MK-RT-540 | MK-I54HB14/15 | MK-I54HB | MK-RB-540 | MK-LL-540 |
| 6” | MK-RT-600 | MK-I60HB14/15 | MK-I60HB | MK-RB-600 | MK-LL-600 |
RODS
PISTON ROD
EXTENSION
SUB ROD nnr.
ROD
ROD CLAMP
PISTON ROD NUT
PART NO. MK-0257-A MK-0257-B MK-16-0257 MK-24-0257 MK-7403364
NATIONAL
8-P-80
| Liners & Liner Packing | ||
| SIZES | LINER | LINER PACKING |
| 4” | MK-0256-40 | MKG-0272 |
| 4½” | MK-0256-44 | MKG-0274 |
| 5” | MK-0256-50 | MKG-0276 |
| 5½” | MK-0256-54 | MKG-0278 |
| 6” | MK-0256-60 | MKG-0280 |
| 6¼” | MK-0256-62 | MKG-0268 |
| 6½” | MK-0256-64 | MKG-0268 |
Gaskets
Valve Cover Gasket
MK-61-0255
Cylinder Head Gasket
N/A
| SERIES | KING-4 WEB | KING-FULL OPEN | KING-G2 | MKP-ROUGHNECK |
| VALVE (Urethane Insert) | MK-U5B-EH | MK-6FO-V1 | MK-1560995 | MK-RN6-V1 |
| VALVE (Rubber Insert) | MK-5B-EH | N/A | N/A | N/A |
| VALVE SEAT | MK-6ADD-B4 | MK-6FO-S4 | MK-1561450 | MK-RN6-S4 |
| VALVE SPRING | MK-5710-115 | MK-5710-115 | MK-1560701 | MK-5710-115 |
| VALVE INSERT (Red Thunder) | MK-UDD-6ABHT | N/A | N/A | N/A |
| VALVE INSERT (Urethane) | MK-UDD-6B | MK-6FO-SI | MK-1560587 | MK-RN6-I |
| VALVE INSERT (Rubber) | MK-DD-6B | N/A | N/A | N/A |
| VALVE SEAT PULLER HEAD | MK-1700-6 | MK-1700-6FO | MK-1700-6G2 | MK-1700-6FO |
| Piston Size | Red Thunder Bonded Pistons | Imperial Piston | Imperial Rubber Kits | Rubber Bonded | Long Life (Urethane) |
| 4” | MK-RT-400 | MK-I40HK14/15 | MK-I40HK | MK-RB-400 | MK-LL-400 |
| 4½” | MK-RT-440 | MK-I44HK14/15 | MK-I44HK | MK-RB-440 | MK-LL-440 |
| 5” | MK-RT-500 | MK-I50HB14/15 | MK-I50HB | MK-RB-500 | MK-LL-500 |
| 5½” | MK-RT-540 | MK-I54HB14/15 | MK-I54HB | MK-RB-540 | MK-LL-540 |
| 6” | MK-RT-600 | MK-I60HB14/15 | MK-I60HB | MK-RB-600 | MK-LL-600 |
| 6½” | MK-RT-640 | MK-I64HB14/15 | MK-I64HB | MK-RB-640 | MK-LL-640 |
* ¼ Size are available upon request
RODS
PART NO.
PISTON ROD MK-0259-A
SUB ROD MK-0259-B
EXTENSION ROD MK-16-0259
ROD CLAMP MK-24-0259
PISTON ROD NUT MK-7403364
NATIONAL
9-P-100
| Liners & Liner Packing | ||
| SIZES | LINER | LINER PACKING |
| PART NO. | PART NO. | |
| 4” | N/A | N/A |
| 4½” | MK-0255-44 | MKG-0274 |
| 5” | MK-0255-50 | MKG-0265 |
| 5½” | MK-0255-54 | MKG-0263 |
| 6” | MK-0255-60 | MKG-0261 |
| 6¼” | MK-255-62 | MKG-0283 |
| 6½” | MK-0255-64 | MKG-0768 |
| 6¾” | MK-0255-66 | MKG-0287 |
| Gaskets | |
| Valve Cover Gasket | Cylinder Head Gasket |
| PART NO. | PART NO. |
| MK-61-0255 | N/A |
| SERIES | KING-4 WEB | KING-FULL OPEN | KING-G2 | MKP-ROUGHNECK |
| VALVE (Urethane Insert) | MK-U5B-EH | MK-6FO-V1 | MK-1560995 | MK-RN6-V1 |
| VALVE (Rubber Insert) | MK-5B-EH | N/A | N/A | N/A |
| VALVE SEAT | MK-6ADD-B4 | MK-6FO-S4 | MK-1561450 | MK-RN6-S4 |
| VALVE SPRING | MK-5710-115 | MK-5710-115 | MK-1560701 | MK-5710-115 |
| VALVE INSERT (Red Thunder) | MK-UDD-6ABHT | N/A | N/A | N/A |
| VALVE INSERT (Urethane) | MK-UDD-6B | MK-6FO-SI | MK-1560587 | MK-RN6-I |
| VALVE INSERT (Rubber) | MK-DD-6B | N/A | N/A | N/A |
| VALVE SEAT PULLER HEAD | MK-1700-6 | MK-1700-6FO | MK-1700-6G2 | MK-1700-6FO |
| Piston Size | Red Thunder Bonded Pistons | Imperial Piston | Imperial Rubber Kits | Rubber Bonded | Long Life (Urethane) |
| 4” | MK-RT-400 | MK-I40HK14/15 | MK-I40HK | MK-RB-400 | MK-LL-400 |
| 4½” | MK-RT-440 | MK-I44HK14/15 | MK-I44HK | MK-RB-440 | MK-LL-440 |
| 5” | MK-RT-500 | MK-I50HB14/15 | MK-I50HB | MK-RB-500 | MK-LL-500 |
| 5½” | MK-RT-540 | MK-I54HB14/15 | MK-I54HB | MK-RB-540 | MK-LL-540 |
| 6” | MK-RT-600 | MK-I60HB14/15 | MK-I60HB | MK-RB-600 | MK-LL-600 |
| 6½” | MK-RT-640 | MK-I64HL14/15 | MK-I64HL | MK-RB-640 | MK-LL-640 |
* ¼ Size are available upon request
RODS
PART NO.
PISTON ROD MK-0260-A
SUB ROD MK-0260-B
EXTENSION ROD MK-16-0260
ROD CLAMP MK-24-0260
PISTON ROD NUT MK-7403364
NATIONAL
10-P-130
| Liners & Liner Packing | ||
| SIZES | LINER | LINER PACKING |
| 4” | N/A | N/A |
| 4½” | MK-0255-44 | MKG-0274 |
| 5” | MK-0255-50 | MKG-0265 |
| 5½” | MK-0255-54 | MKG-0263 |
| 6” | MK-0255-60 | MKG-0261 |
| 6¼” | MK-255-62 | MKG-0283 |
| 6½” | MK-0255-64 | MKG-0768 |
| 6¾” | MK-0255-66 | MKG-0287 |
Gaskets
Valve Cover Gasket
MK-61-0255
Cylinder Head Gasket
N/A
| SERIES | KING-4 WEB | KING-FULL OPEN | KING-G2 | MKP-ROUGHNECK |
| VALVE (Urethane Insert) | MK-U5B-EH | MK-6FO-V1 | MK-1560995 | MK-RN6-V1 |
| VALVE (Rubber Insert) | MK-5B-EH | N/A | N/A | N/A |
| VALVE SEAT | MK-6ADD-B4 | MK-6FO-S4 | MK-1561450 | MK-RN6-S4 |
| VALVE SPRING | MK-5710-115 | MK-5710-115 | MK-1560701 | MK-5710-115 |
| VALVE INSERT (Red Thunder) | MK-UDD-6ABHT | N/A | N/A | N/A |
| VALVE INSERT (Urethane) | MK-UDD-6B | MK-6FO-SI | MK-1560587 | MK-RN6-I |
| VALVE INSERT (Rubber) | MK-DD-6B | N/A | N/A | N/A |
| VALVE SEAT PULLER HEAD | MK-1700-6 | MK-1700-6FO | MK-1700-6G2 | MK-1700-6FO |
| Piston Size | Red Thunder Bonded Pistons | Imperial Piston | Imperial Rubber Kits | Rubber Bonded | Long Life (Urethane) |
| 4” | MK-RT-400 | MK-I40HK14/15 | MK-I40HK | MK-RB-400 | MK-LL-400 |
| 4½” | MK-RT-440 | MK-I44HK14/15 | MK-I44HK | MK-RB-440 | MK-LL-440 |
| 5” | MK-RT-500 | MK-I50HB14/15 | MK-I50HB | MK-RB-500 | MK-LL-500 |
| 5½” | MK-RT-540 | MK-I54HB14/15 | MK-I54HB | MK-RB-540 | MK-LL-540 |
| 6” | MK-RT-600 | MK-I60HB14/15 | MK-I60HB | MK-RB-600 | MK-LL-600 |
| 6½” | MK-RT-640 | MK-I64HL14/15 | MK-I64HL | MK-RB-640 | MK-LL-640 |
* ¼ Size are available upon request
PART NUMBER
PISTON ROD
MK-0256-A
RODS
EXTENSION
SUB ROD
ROD
| MK-0256-B |
MK-16-0256
NATIONAL
| 7½ × 12 | ||
| Liners & Liner Packing | ||
| SIZES | LINER | LINER PACKING |
| 4” | MK-0259-40 | MKG-0265 |
| 4½” | MK-0259-44 | MKG-0265 |
| 5” | MK-0259-50 | MKG-0265 |
| 5½” | MK-0259-54 | MKG-0263 |
| 6” | MK-0259-60 | MKG-0261 |
| 6¼” | MK-0259-62 | MKG-0283 |
| 6½” | MK-0259-64 | MKG-0284 |
| 6¾” | MK-0259-66 | MKG-0287 |
| 7” | MK-0259-70 | MKG-0285 |
| 7¼” | MK-0259-72 | MKG-0286 |
| 7½” | MK-0259-74 | N/A |
12-P-160
Cylinder Head Gasket
N/A
| SERIES | KING-4 WEB | KING-FULL OPEN | KING-G2 | MKP-ROUGHNECK |
| VALVE (Urethane Insert) | MK-U5C-EEF | MK-7FO-V1 | MK-1560985 | MK-RN7-V1 |
| VALVE (Rubber Insert) | MK-5C-EEF | N/A | N/A | N/A |
| VALVE SEAT | MK-7DD-B12 | MK-7FO-S4 | MK-1561440 | MK-RN7-S12 |
| VALVE SPRING | MK-5710-110 | MK-5710-115L | MK-1560702 | MK-5710-110 |
| VALVE INSERT (Red Thunder) | MK-UDD-7BHT | N/A | N/A | N/A |
| VALVE INSERT (Urethane) | MK-UDD-7B | MK-7FO-SI | MK-1560557 | MK-RN7-I |
| VALVE INSERT (Rubber) | MK-DD-7B | N/A | N/A | N/A |
| VALVE SEAT PULLER HEAD | MK-1700-7 | MK-1700-7FO | MK-1700-7GR | MK-1700-7FO |
| Piston Size | Red Thunder Bonded Pistons | Imperial Piston | Imperial Rubber Kits | Rubber Bonded | Long Life (Urethane) |
| 4” | MK-RT-400 | MK-I40HK14/15 | MK-I40HK | MK-RB-400 | MK-LL-400 |
| 4½” | MK-RT-440 | MK-I44HK14/15 | MK-I44HK | MK-RB-440 | MK-LL-440 |
| 5” | MK-RT-500 | MK-I50HB14/15 | MK-I50HB | MK-RB-500 | MK-LL-500 |
| 5½” | MK-RT-540 | MK-I54HB14/15 | MK-I54HB | MK-RB-540 | MK-LL-540 |
| 6” | MK-RT-600 | MK-I60HB14/15 | MK-I60HB | MK-RB-600 | MK-LL-600 |
| 6½” | MK-RT-640 | MK-I64HL14/15 | MK-I64HL | MK-RB-640 | MK-LL-640 |
| 7” | MK-RT-700 | MK-I70HL14/15 | MK-I70HL | MK-RB-700 | MK-LL-700 |
| 7½” | N/A | MK-I74HL14/15 | MK-I70HL | MK-RB-740 | MK-LL-740 |
* ¼ Size are available upon request
| RODS | |||||||
| PISTON ROD | SUB ROD | EXTENSION ROD | ROD CLAMP | PISTON ROD NUT | |||
| PART NO. | MK-0258-A | MK-0258-B | MK-16-0258 | MK-24-0258 | MK-7403364 | ||