Mitsubishi S12R engine spare parts catalog
| No. | Parts Description | P/N |
| 1 | RING SET,PISTON | 37517-10010 |
| 2 | LINER,CYLINDER | 37507-82600 |
| 3 | O-RING,CYLINDER LINER | 37507-32400 |
| O-RING,CYLINDER LINER | 37107-04201 | |
| O-RING,CYLINDER LINER | 37107-04300 | |
| 4 | PISTON | 37517-30101,37517-17700 |
| 5 | PIN,PISTON | 37517-18100 |
| 6 | GASKET KIT,OVERHAUL | 37794-90270 |
| 7 | GASKET,CYLINDER HEAD | 37501-12200 |
| 8 | SEAL,OIL | 37511-04300 |
| 9 | SEAL,OIL | 37711-04300 |
| 10 | VALVE,INTAKE | 37504-40200 |
| 11 | GUIDE,INTAKE VALVE | 37101-10600 |
| 12 | SEAT,INTAKE VALVE | 37501-13100 |
| 13 | VALVE,EXHAUST | 37504-40200 |
| 14 | GUIDE,EXHAUST VALVE | 37101-10600 |
| 15 | SEAT,EXHAUST VALVE | 37501-13100 |
| 16 | BEARING SET,MAIN（STD） | 37709-12010 |
| BEARING SET,MAIN（0.25） | 37709-12020 | |
| BEARING SET,MAIN（0.50） | 37709-12030 | |
| BEARING SET,MAIN（0.75） | 37709-12040 | |
| BEARING SET,MAIN（1.00） | 37709-12050 | |
| 17 | BEARING,CONNECTING ROD（STD） | 37519-13100 |
| BEARING,CONNECTING ROD（0.25） | 37519-13200 | |
| BEARING,CONNECTING ROD（0.50） | 37519-13300 | |
| BEARING,CONNECTING ROD（0.75） | 37519-13400 | |
| BEARING,CONNECTING ROD（1.00） | 37519-13500 | |
| 18 | BEARING,THRUST(STD) | 37709-28100 |
| BEARING,THRUST(0.25) | 37709-28200 | |
| BEARING,THRUST(0.50) | 37709-28300 | |
| BEARING,THRUST(0.75) | 37709-28400 | |
| 19 | STARTER ASSY | 37766-20201 |
| 20 | CYLINDER HEAD ASSM | 37501-80050 |
| 21 | ALTERNATOR | 04343-38000 |
| 22 | PUMP ASSY,WATER | 37545-80011,37745-60011 |
| 23 | TIP ASSY,NOZZLE | 37560-17500,37560-17700, |
| 37561-17500 | ||
| 24 | NOZZLE ASSY | 37560-39002,37560-22012 |
| 25 | PUMP,FEED | 04245-01120 |
| 26 | PUMP ASSY INJECTION | 48273-00005,48274-00005, |
| PS6-HL-50,PS6-HR-50; | ||
| 48A50-08005,48A60-08005, | ||
| 27 | SPEED CONTROLLER | 04410-53100,XS-400B-03 |
| 28 | GOVERNOR ACTUATOR | 04410-32011,SG4017BR-01 |
| 29 | TURBOCHARGER | 49182-03471,49182-03481, |
| 49182-03880,49182-03890, | ||
| 49182-03821,49182-03830 | ||
| 30 | D.C.SOLENOID | 04400-08801,04400-08901 |
| 04400-09201 | ||
| Woodward 2370-24ESU1B5S | ||
| 31 | PUMP ASSY OIL | 37735-00031 |
| 32 | NOZZLE ASSY | 37560-39002,37560-22012 |
| 33 | V-BELT,ALTERNATOR | 37768-04200 |
| 34 | OIL ELEMENT,FULL-FLOW | 37540-11100 |
| 35 | OIL ELEMENT,BY-BASS | 37540-02100 |
| 36 | FUEL ELEMENT | 32562-60300 |
| 37 | CLEANER ELEMENT，AIR | 47220-39802,47220-47800 |
