Description
1 x Upper Gasket Set – 4089957
Fits Application: Cummins ISB / QSB Series
OE Replacements: 131880, 4089957
| Quantity | Description | Part Number | OEM Number |
| 1 | O-RING | 121244 | 3913994 |
| 1 | O-RING | 121205 | 3089240 |
| 1 | O-RING | 121298 | 3678786 |
| 1 | TURBOCHARGER MOUNTING GASKET | 131813 | 3921926 |
| 1 | EXHAUST OUTLET GASKET | 131879 | 3921961 |
| 1 | INTAKE MANIFOLD COVER GASKET | 131693 | 3947530 |
| 1 | VALVE COVER GASKET | 131691 | 3954324 |
| 1 | THERMOSTAT SEAL | 136095 | 3954829 |
| 1 | O-RING | 121192 | 3957440 |
| 1 | O-RING | 121329 | 3958414 |
| 1 | HEAD GASKET | 131711 | 3958645 |
| 1 | ROCKER HOUSING GASKET | 131692 | 3963379 |
| 1 | O-RING | 121220 | 3990084 |
| 1 | OIL DRAIN GASKET | 131694 | 4931365 |
| 2 | O-RING | 121289 | 3678603 |
| 2 | O-RING | BGA-3008 | 56AX441 |
| 2 | WASHER | 136124 | 3967317 |
| 2 | INLET CONNECTION GASKET | 131511 | 3931604 |
| 3 | O-RING | EGA-3877 | 446GC1225 |
| 3 | SEAL | 136103 | 3963988 |
| 6 | O-RING | 321239 | 3J7354 |
| 6 | COPPER WASHER | 42092 | 3906659 |
| 6 | EXHAUST MANIFOLD GASKET | 131599 | 3946275 |
| 6 | O-RING | 321287 | 8L2777 |
| 6 | O-RING | 121319 | 4890926 |
| 8 | FUEL FITTING SEAL | 136102 | 3963990 |
| 12 | VALVE STEM SEAL | 192108 | 3955393 |
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