Caterpillar O-Ring, PAI 321273 (OEM 8H2046), Pack of 5
Used In These Kits
This part is included in 5 engine & overhaul kits — find yours below.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
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331313Caterpillar 3100/C7 Block Side Cover Gasket, PAI (OEM 4Y9652), Pack of 3 In stock -
321404Caterpillar O-Ring, PAI (OEM 227-5904) In stock -
331311Caterpillar 3116 Compressor Mounting Gasket, PAI (OEM 1359819), Pack of 5 In stock -
321254Caterpillar Buna N O-Ring, PAI (OEM 4F9029), Pack of 5 In stock
| Brand | PAI Industries |
| Part Category | Seals & O-Rings |
| Sub-Type | O-Ring |
| Engine Make | Caterpillar |
| Engine Model | 3100 · C7 |
| Condition | New |
| Stage / Tier | Standard |
Sold in a pack of 5.
PAI 321273 is an o-ring made from Buna-N. PAI lists Caterpillar 3100 and C7 applications. The manufacturer identifies Caterpillar OEM reference 8H2046.
Compare the complete part number and listed application with your required part before ordering.
PAI Part #: 321273
OEM References:
- CATERPILLAR 8H2046
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 |
|---|
| 8H2046 |
| CATERPILLAR 8H2046 |
| PAI 321273 |
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.









