Viton O-Ring, PAI 321270 (OEM 335853), Pack of 10
Used In These Kits
This part is included in 19 engine & overhaul kits — find yours below.
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121438Cummins ISX SERIES FUEL PUMP SERVICE KIT In stock -
131253Cummins TURBO MOUNTING GASKET KIT In stock -
132066Cummins ISX SERIES TURBOCHARGER GASKET KIT In stock -
132081Cummins ISL9 UPPER GASKET KIT In stock -
132083-100O-RING GASKET KIT In stock -
132109-155Cummins ISL9 / QSL Turbocharger Gasket Kit In stock -
331166Caterpillar C15 In-Frame Gasket Kit In stock -
331470-151Caterpillar 3126 Intake Gasket Kit In stock -
331473-151Caterpillar C13 Intake Gasket Kit In stock -
331499Cat / Caterpillar OIL COOLER GASKET KIT In stock -
331501Cat / Caterpillar C13 ENGINE TURBOCHARGER INSTALLATION GASKET KIT In stock -
331502Cat / Caterpillar C13 ENGINE TURBOCHARGER INSTALLATION GASKET KIT In stock - 331504UPPER GASKET KIT View ›
- 331634FRONT STRUCTURE GASKET KIT View ›
- 331638CENTRAL/LOWER GASKET SET View ›
- 331648UPPER GASKET KIT View ›
- 331652OIL COOLER GASKET KIT View ›
- 331677UPPER GASKET KIT View ›
- 450595PRESSURE SENSOR KIT View ›
- 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 |
| Condition | New |
| Stage / Tier | Standard |
PAI 321270 is a viton o-ring. PAI specifies Viton construction. The manufacturer designates product-level OEM 335853. PAI cross-references Caterpillar 335853.
Pack of 10.
Manufacturer product cross-references
Caterpillar 033-5853
Caterpillar 033-6029
Caterpillar 0335853
Caterpillar 214-7566
Caterpillar 2147566
Caterpillar 33-5853
Caterpillar 33-6029
Caterpillar 336029
Caterpillar 81-7110
Caterpillar 817110
Navistar 1837802C1
Navistar 1837802
Mack 4333-1837802C1
Cummins 3922794
PAI Part #: 321270
OEM References:
- CATERPILLAR 033-5853
- CATERPILLAR 033-6029
- CATERPILLAR 0335853
- CATERPILLAR 214-7566
- CATERPILLAR 2147566
- CATERPILLAR 33-5853
- CATERPILLAR 33-6029
- CATERPILLAR 335853
- CATERPILLAR 336029
- CATERPILLAR 81-7110
- CATERPILLAR 817110
- NAVISTAR 1837802C1
- NAVISTAR 1837802
- MACK 4333-1837802C1
- CUMMINS 3922794
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 |
|---|
| 033-5853 |
| 033-6029 |
| 0335853 |
| 214-7566 |
| 2147566 |
| 33-5853 |
| 33-6029 |
| 335853 |
| 336029 |
| 81-7110 |
| 817110 |
| 1837802C1 |
| 1837802 |
| 4333-1837802C1 |
| 3922794 |
| CATERPILLAR 033-5853 |
| CATERPILLAR 033-6029 |
| CATERPILLAR 0335853 |
| CATERPILLAR 214-7566 |
| CATERPILLAR 2147566 |
| CATERPILLAR 33-5853 |
| CATERPILLAR 33-6029 |
| CATERPILLAR 335853 |
| CATERPILLAR 336029 |
| CATERPILLAR 81-7110 |
| CATERPILLAR 817110 |
| NAVISTAR 1837802C1 |
| NAVISTAR 1837802 |
| MACK 4333-1837802C1 |
| CUMMINS 3922794 |
| PAI 321270 |
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.

















