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Caterpillar · Models: 3400
321302 Caterpillar 3400 O-Ring Kit
Commercial diesel seal & o-ring. Match the listed part and engine identifiers before ordering.
2-Year WarrantyPAI Industries
$18.62$20.40
Save $1.78
In Stock
PAI Part #321302
JAK'S Part #JAKS-321302
Included Components
What’s In This Kit
Browse 5 included components with current product details and availability.
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321276Caterpillar 3406E / C15 / C16 O-Ring In stock -
331269Caterpillar 3400 Primer Pump Gasket In stock -
321230Caterpillar 3406E / C15 / C16 O-Ring In stock -
321229Caterpillar / Mack 3100 / C7 / T310 M TRANSMISISON O-Ring In stock -
121284Cat / Caterpillar O-RING (Pack of 10) In stock - No included components match that search.
Complete The Rebuild
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 |
| Condition | New |
| Stage / Tier | Standard |
Discovery models are listed below. Confirm the complete application and any ESN/CPL or size restrictions before ordering.
Caterpillar 3400
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.