Caterpillar C10/C12/C13 Rear Crankshaft Seal, PAI 336034 (OEM 1005421), Pack of 1
Used In These Kits
This part is included in 1 engine & overhaul kits — find yours below.
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331510Caterpillar C13 Rear Gasket Kit In stock - No kits match that search.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
| Brand | PAI Industries |
| Part Category | Crankshaft |
| Engine Make | Caterpillar |
| Engine Model | C10 · C12 · C13 |
| Condition | New |
| Stage / Tier | Standard |
PAI 336034 is a rear crankshaft seal for Caterpillar C10, C12 and C13 applications. The manufacturer designates product-level OEM 1005421. PAI cross-references Caterpillar 1005421. PAI lists these application categories: Caterpillar C10 Engine, Caterpillar C12 Engines, Caterpillar C13 Engine. Confirm the complete required part number before ordering.
Pack of 1.
Manufacturer product cross-references
Caterpillar 100-5421
PAI Part #: 336034
OEM References:
- CATERPILLAR 100-5421
- CATERPILLAR 1005421
Applications:
- CATERPILLAR C10 ENGINE
- CATERPILLAR C12 ENGINES
- CATERPILLAR C13 ENGINE
Warranty: 2.0 year(s)
These catalog references may identify this part or components in an assembly. A listed number alone does not confirm whole-assembly interchange or vehicle fitment. Confirm the required part before ordering.
| Number |
|---|
| 100-5421 |
| 1005421 |
| CATERPILLAR 100-5421 |
| CATERPILLAR 1005421 |
No cross-reference numbers match that search.
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.






