Caterpillar Buna N O-Ring, PAI 321237 (OEM 6H9691), Pack of 5
Used In These Kits
This part is included in 1 engine & overhaul kits — find yours below.
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| Brand | PAI Industries |
| Part Category | Seals & O-Rings |
| Engine Make | Caterpillar |
| Engine Model | 3400 |
| Condition | New |
| Stage / Tier | Standard |
PAI 321237 is a buna n o-ring for Caterpillar applications. PAI specifies Buna N construction. The manufacturer designates product-level OEM 6H9691. PAI cross-references Caterpillar 6H9691. PAI lists these application categories: Caterpillar 3400 Series. Confirm the complete required part number before ordering.
Pack of 5.
Manufacturer product cross-references
Caterpillar 1J1694
Caterpillar 4J8994
Caterpillar 53-0247
Caterpillar 530247
Caterpillar 8F6955
PAI Part #: 321237
OEM References:
- CATERPILLAR 1J1694
- CATERPILLAR 4J8994
- CATERPILLAR 53-0247
- CATERPILLAR 530247
- CATERPILLAR 6H9691
- CATERPILLAR 8F6955
Applications:
- CATERPILLAR 3400 SERIES
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 |
|---|
| 1J1694 |
| 4J8994 |
| 53-0247 |
| 530247 |
| 6H9691 |
| 8F6955 |
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.






