Caterpillar Buna N O-Ring, PAI 321252 (OEM 7F8267), Pack of 5
Used In These Kits
This part is included in 4 engine & overhaul kits — find yours below.
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| Brand | PAI Industries |
| Part Category | Seals & O-Rings |
| Sub-Type | O-Ring |
| Engine Make | Caterpillar |
| Engine Model | 3100 · C7 |
| Condition | New |
| Stage / Tier | Standard |
PAI 321252 is a buna n o-ring for Caterpillar applications. PAI specifies Buna N construction. The manufacturer designates product-level OEM 7F8267. PAI cross-references Caterpillar 7F8267. PAI lists these application categories: Caterpillar 3100 Series, Caterpillar C7 Engine. Confirm the complete required part number before ordering.
Pack of 5.
Manufacturer product cross-references
Caterpillar 53-6952
Caterpillar 536952
Caterpillar 77-6170
Caterpillar 77-7423
Caterpillar 776170
Caterpillar 777423
Caterpillar 78-1982
Caterpillar 781982
Caterpillar 8T7273
PAI Part #: 321252
OEM References:
- CATERPILLAR 53-6952
- CATERPILLAR 536952
- CATERPILLAR 77-6170
- CATERPILLAR 77-7423
- CATERPILLAR 776170
- CATERPILLAR 777423
- CATERPILLAR 78-1982
- CATERPILLAR 781982
- CATERPILLAR 7F8267
- CATERPILLAR 8T7273
Applications:
- CATERPILLAR 3100 SERIES
- CATERPILLAR C7 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 |
|---|
| 53-6952 |
| 536952 |
| 77-6170 |
| 77-7423 |
| 776170 |
| 777423 |
| 78-1982 |
| 781982 |
| 7F8267 |
| 8T7273 |
| CATERPILLAR 53-6952 |
| CATERPILLAR 536952 |
| CATERPILLAR 77-6170 |
| CATERPILLAR 77-7423 |
| CATERPILLAR 776170 |
| CATERPILLAR 777423 |
| CATERPILLAR 78-1982 |
| CATERPILLAR 781982 |
| CATERPILLAR 7F8267 |
| CATERPILLAR 8T7273 |
| PAI 321252 |
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.









