Caterpillar HNBR O-Ring, PAI 321277 (OEM 1223772), Pack of 5
Used In These Kits
This part is included in 5 engine & overhaul kits — find yours below.
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331370Cat / Caterpillar GASKET KIT In stock -
331606Cat / Caterpillar C15 ACERT ENGINE WATER PUMP GASKET KIT In stock -
381802Cat / Caterpillar WATER PUMP ASSEMBLY In stock -
381807Cat / Caterpillar WATER PUMP ASSEMBLY In stock -
381809Cat / Caterpillar C15 ENGINE WATER PUMP ASSEMBLY 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 | Seals & O-Rings |
| Sub-Type | O-Ring |
| Engine Make | Caterpillar |
| Engine Model | 3406E · C15 · C16 · C18 · 3400 |
| Condition | New |
| Stage / Tier | Standard |
PAI 321277 is a hnbr o-ring for Caterpillar applications. PAI specifies HNBR construction. The manufacturer designates product-level OEM 1223772. PAI cross-references Caterpillar 1223772. PAI lists these application categories: Caterpillar 3406E Series, Caterpillar C15 Engine, Caterpillar C16 Engines, Caterpillar C18 Engine, Caterpillar 3400 Series. Confirm the complete required part number before ordering.
Pack of 5.
Manufacturer product cross-references
Caterpillar 122-3772
Caterpillar 4K6804
PAI Part #: 321277
OEM References:
- CATERPILLAR 122-3772
- CATERPILLAR 1223772
- CATERPILLAR 4K6804
Applications:
- CATERPILLAR 3406E SERIES
- CATERPILLAR C15 ENGINE
- CATERPILLAR C16 ENGINES
- CATERPILLAR C18 ENGINE
- 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 |
|---|
| 122-3772 |
| 1223772 |
| 4K6804 |
| CATERPILLAR 122-3772 |
| CATERPILLAR 1223772 |
| CATERPILLAR 4K6804 |
| PAI 321277 |
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.