Caterpillar C15 Buna N O-Ring, PAI 321463 (OEM 4J5351), Pack of 2
Used In These Kits
This part is included in 1 engine & overhaul kits — find yours below.
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331166Caterpillar C15 In-Frame Gasket Kit Ships from supplier · Lead time confirmed when you order - No kits match that search.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
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381863Cat / Caterpillar THERMOSTAT Ships from supplier · Lead time confirmed when you order -
121299Cummins O-RING (Pack of 5) Ships from supplier · Lead time confirmed when you order -
321460Cat C15 O-Ring, PAI (OEM 6V1585), Pack of 2 Ships from supplier · Lead time confirmed when you order -
331374Cat / Caterpillar EXHAUST MANIFOLD ASSEMBLY GASKET Ships from supplier · Lead time confirmed when you order -
331285Cat Regulator Cover Gasket, PAI (OEM 4N1156), Pack of 5 Ships from supplier · Lead time confirmed when you order
| Engine family | Caterpillar C15 |
| Brand | PAI Industries |
| Part Category | Seals & O-Rings |
| Sub-Type | O-Ring |
| Engine Make | Caterpillar |
| Engine Model | C15 |
| Condition | New |
| Stage / Tier | Standard |
PAI Industries 321463 o-ring for Caterpillar C15. Replaces Caterpillar 4J5351. Pack of 2. 24-month warranty.
PAI Part #: 321463
OEM References:
- CATERPILLAR 4J5351
- CATERPILLAR 8T8162
- CATERPILLAR 998228
- CATERPILLAR 813701
- CATERPILLAR 81-3701
- CATERPILLAR 5W1874
- CATERPILLAR 99-8228
Applications:
- CATERPILLAR C15 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 |
|---|
| 4J5351 |
| 8T8162 |
| 998228 |
| 813701 |
| 81-3701 |
| 5W1874 |
| 99-8228 |
| CATERPILLAR 4J5351 |
| CATERPILLAR 8T8162 |
| CATERPILLAR 998228 |
| CATERPILLAR 813701 |
| CATERPILLAR 81-3701 |
| CATERPILLAR 5W1874 |
| CATERPILLAR 99-8228 |
| PAI 321463 |
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.






