321243 Caterpillar 3100 / C7 O-Ring
Used In These Kits
This part is included in 14 engine & overhaul kits — find yours below.
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331144Caterpillar Overhaul Gasket Kit In stock -
331220Caterpillar 3100 / C7 / 3116 Engine Overhaul Gasket Kit In stock -
331325Cat / Caterpillar TURBOCHARGER INSTALLATION GASKET KIT In stock -
331327Caterpillar 3100 / C7 / 3116 Fuel Pump Gasket Kit In stock -
331328Cat / Caterpillar UPPER GASKET KIT In stock -
331429Cat / Caterpillar INSTALLATION GASKET KIT In stock -
331503Cat / Caterpillar UPPER GASKET KIT In stock -
331504Cat / Caterpillar C7 ENGINE UPPER GASKET KIT In stock -
331513Cat / Caterpillar TURBOCHARGER INSTALLATION GASKET KIT In stock -
331514Cat / Caterpillar OIL COOLER GASKET KIT In stock -
331515Cat / Caterpillar FRONT COVER GASKET KIT In stock -
331581Cat / Caterpillar UPPER GASKET SET In stock - 331670OIL COOLER GASKET SET View ›
- 801111IDLER PULLEY 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 | 3100 · C7 |
| Condition | New |
| Stage / Tier | Standard |
Cataloged cross-reference numbers for this product. Confirm fitment before ordering.
| Number |
|---|
| 199-1901 |
| 1991901 |
| 5W4864 |
| 6V8397 |
| 77-3371 |
| 773371 |
| 81-4024 |
| 814024 |
| 8T4057 |
| 8U1671 |
| 96-5963 |
| 965963 |
| 98-2638 |
| 982638 |
| 1616154 |
| 161-6154 |
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.