Viton O-Ring, PAI 121284 (OEM 3040817), Pack of 10
Used In These Kits
This part is included in 42 engine & overhaul kits — find yours below.
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131263Cummins LOWER GASKET SET In stock -
131482-150Cummins FUEL O-RING KIT In stock -
131597-200O-RING KIT In stock -
131815UPPER GASKET KIT In stock -
131816UPPER GASKET KIT In stock -
131902LOWER GASKET KIT In stock -
321302Caterpillar 3400 Fuel Pump O-Ring Kit, PAI (OEM 1891951), Pack of 1 In stock -
321411Caterpillar C15 ACERT Oil Cooler Gasket Kit, PAI (OEM 3483682), Pack of 1 In stock -
331166Caterpillar C15 In-Frame Gasket Kit In stock -
331230Cat / Caterpillar 3400 SERIES UPPER GASKET KIT In stock -
331231Cat / Caterpillar 3400 SERIES UPPER GASKET KIT In stock -
331232Cat / Caterpillar 3400 SERIES UPPER GASKET KIT In stock - 331237UPPER GASKET KIT View ›
- 331239UPPER GASKET KIT View ›
- 331240UPPER GASKET KIT View ›
- 331334GASKET KIT View ›
- 331390OIL COOLER GASKET KIT View ›
- 331391OIL COOLER GASKET KIT View ›
- 331393TURBOCHARGER MOUNTING GASKET View ›
- 331414FUEL GASKET KIT View ›
- 331430TURBOCHARGER MOUNTING GASKET KIT View ›
- 331431OIL COOLER GASKET KIT View ›
- 331470-150FUEL GASKET KIT View ›
- 331496COMPRESSOR GASKET SET View ›
- 331497COMPRESSOR GASKET SET View ›
- 331500FUEL GASKET KIT View ›
- 331511FRONT GASKET KIT View ›
- 331512OIL COOLER GASKET KIT View ›
- 331515FRONT COVER GASKET KIT View ›
- 331543WATER PUMP GASKET SET View ›
- 331545FUEL GAKSKET KIT View ›
- 331546OIL COOLER GASKET KIT View ›
- 331561UPPER GASKET KIT View ›
- 331562LOWER GASKET SET View ›
- 331567TURBOCHARGER INSTALLATION KIT View ›
- 331573REAR GASKET KIT View ›
- 331627CENTRAL/LOWER GASKET SET View ›
- 331648UPPER GASKET KIT View ›
- 331652OIL COOLER GASKET KIT View ›
- 380171FUEL CHECKVALVE View ›
- ECP-3476PIPE PLUG View ›
- GBK-8955-200O-RING KIT View ›
- No kits match that search.
| Brand | PAI Industries |
| Part Category | Gaskets & Seals |
| Sub-Type | O-Ring |
| Engine Make | Caterpillar |
| Engine Model | 3406E · C15 · C16 · C18 |
Pack of 10.
PAI 121284 is a Viton o-ring. PAI lists Caterpillar 3406E, C15, C16, C18 applications. The manufacturer-designated primary reference is Cummins OEM 3040817. Its manufacturer cross-reference table lists Caterpillar: 238-5081, 2385081, 6V4589, 0336027, 033-6027, 336027, 33-6027, 1522939, 152-2939; Cummins: 129858, 3040817; Mack: 56AX410, 25097766.
Compare the complete part number and required application before ordering.
Fits:
- CATERPILLAR 3406E SERIES
- CATERPILLAR C15 ENGINE
- CATERPILLAR C16 ENGINES
- CATERPILLAR C18 ENGINE
OEM cross-references:
- CATERPILLAR 238-5081
- CATERPILLAR 2385081
- CATERPILLAR 6V4589
- CUMMINS 129858
- CUMMINS 3040817
- MACK 56AX410
- MACK 25097766
- CATERPILLAR 0336027
- CATERPILLAR 033-6027
- CATERPILLAR 336027
- CATERPILLAR 33-6027
- CATERPILLAR 1522939
- CATERPILLAR 152-2939
Warranty: 24 months
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 |
|---|
| CATERPILLAR 238-5081 |
| CATERPILLAR 2385081 |
| CATERPILLAR 6V4589 |
| CUMMINS 129858 |
| CUMMINS 3040817 |
| MACK 56AX410 |
| MACK 25097766 |
| CATERPILLAR 0336027 |
| CATERPILLAR 033-6027 |
| CATERPILLAR 336027 |
| CATERPILLAR 33-6027 |
| CATERPILLAR 1522939 |
| CATERPILLAR 152-2939 |
| PAI 121284 |
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.