321241 Caterpillar 3400 / 3406B O-Ring
Used In These Kits
This part is included in 16 engine & overhaul kits — find yours below.
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131254Cummins ISB ENGINES LOWER GASKET KIT In stock -
131811Cummins ISL SERIES LOWER GASKET KIT In stock -
131830Cummins QSB SERIES ENGINE LOWER GASKET SET In stock -
131865Cummins LOWER GASKET KIT In stock -
132045-170Cummins Block Gasket Sub Kit In stock -
132083-100O-RING GASKET KIT In stock -
141440Cummins EGR COOLER INSTALLATION KIT In stock -
141475Cummins ISX Egr Cooler Installation Kit In stock -
331166Caterpillar C15 In-Frame Gasket Kit In stock -
331327Caterpillar 3100 / C7 / 3116 Fuel Pump Gasket Kit In stock -
331328Cat / Caterpillar UPPER GASKET KIT In stock -
331519Cat / Caterpillar C12 ENGINES LOWER GASKET SET In stock - 331562LOWER GASKET SET View ›
- 331581UPPER GASKET SET View ›
- 331627CENTRAL/LOWER GASKET SET View ›
- 331676UPPER GASKET 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 |
| Engine Model | 3400 · 3406B |
| Condition | New |
| Stage / Tier | Standard |
Cataloged cross-reference numbers for this product. Confirm fitment before ordering.
| Number |
|---|
| 238-5079 |
| 2385079 |
| 5P7813 |
| 1085803 |
| 108-5803 |
| 3678925 |
| 4944960 |
| 4333-1837801C1 |
| 1837801 |
| 1837801C1 |
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.