331638 Cat / Caterpillar C9 ENGINES CENTRAL/LOWER GASKET SET
What’s In This Kit
Browse 15 included components with current product details and availability.
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321255Caterpillar 3100 / C7 O-Ring In stock -
421232International / Navistar O-RING (Pack of 6) In stock -
342091Caterpillar 3176 Oil Protection Test Port Cap In stock -
321330Caterpillar 3300 O-Ring In stock -
321270Caterpillar O-Ring In stock -
321276Caterpillar 3406E / C15 / C16 O-Ring In stock -
321230Caterpillar 3406E / C15 / C16 O-Ring In stock -
121265Cat / Caterpillar O-RING (Pack of 6) In stock -
336027Caterpillar C9 Injector Seal In stock -
321451Caterpillar C9 / 3116 / 3126 O-Ring In stock -
321450Caterpillar C9 O-Ring In stock -
321449Caterpillar C9 O-Ring In stock -
331641Caterpillar C9 Oil Pan Gasket In stock -
331639Cat / Caterpillar C9 ENGINES GASKET In stock -
331640Caterpillar C9 Crankcase Breather Gasket In stock - No included components match that search.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
| Brand | PAI Industries |
| Part Category | Gasket Sets & Kits |
| Sub-Type | Gasket Set |
| Engine Make | Caterpillar |
| Engine Model | C9 |
CENTRAL/LOWER GASKET SET
Fits:
- CATERPILLAR C9 ENGINES
OEM cross-references:
- 321255 3P1156
- 421232 1844934C1
- 342091 8C3445
- 321330 9F4446
- 321270 335853
- 321276 2147568
- 321230 2385080
- 121265 3046943
- 336027 5N4185
- 321451 5P6436
- 321450 336032
- 321449 336034
- 331641 1906114
- 331639 1950452
- 331640 2132410
Warranty: 24 months
Discovery models are listed below. Confirm the complete application and any ESN/CPL or size restrictions before ordering.
Most PAI parts carry a 2-year unlimited-mileage PAI warranty — 3 years on the High Performance tier, 1 year on Excel by PAI. See Warranty & Returns for full coverage terms, or call a specialist to confirm the exact coverage on this part.
PAI published warranty tiers: High Performance — 3-Year · Genuine PAI — 2-Year · Excel — 1-Year, unlimited mileage. The badge beside the price shows this product's recorded term; when no badge is shown, confirm coverage with a specialist.



















