321223 Caterpillar 3406E / C15 / C16 O-Ring
Used In These Kits
This part is included in 31 engine & overhaul kits — find yours below.
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321411Caterpillar C15 / C15 Acert Oil Cooler Gasket Kit In stock -
331144Caterpillar Overhaul Gasket Kit In stock -
331166Caterpillar C15 In-Frame Gasket Kit In stock -
331392Cat / Caterpillar OIL COOLER GASKET KIT In stock -
331414Cat / Caterpillar 3400 SERIES FUEL GASKET KIT In stock -
331470-150Caterpillar C13 Fuel Gasket Kit In stock -
331470-151Caterpillar 3126 Intake Gasket Kit In stock -
331473-150Caterpillar C13 Fuel O-Ring Kit In stock -
331473-151Caterpillar C13 Intake Gasket Kit In stock -
331496Cat / Caterpillar C13 ENGINE COMPRESSOR GASKET SET In stock -
331497Cat / Caterpillar C13 ENGINE COMPRESSOR GASKET SET In stock -
331501Cat / Caterpillar C13 ENGINE TURBOCHARGER INSTALLATION GASKET KIT In stock - 331502TURBOCHARGER INSTALLATION GASKET KIT View ›
- 331503UPPER GASKET KIT View ›
- 331504UPPER GASKET KIT View ›
- 331511FRONT GASKET KIT View ›
- 331516LOWER GASKET KIT View ›
- 331519LOWER GASKET SET View ›
- 331546OIL COOLER GASKET KIT View ›
- 331554LOWER GASKET SET View ›
- 331557LOWER GASKET SET View ›
- 331561UPPER GASKET KIT View ›
- 331562LOWER GASKET SET View ›
- 331573REAR GASKET KIT View ›
- 331624TURBOCHARGER INSTALLATION KIT View ›
- 331626FUEL GASKET KIT View ›
- 331627CENTRAL/LOWER GASKET SET View ›
- 331670OIL COOLER GASKET SET View ›
- 331677UPPER GASKET KIT View ›
- 331679FRONT COVER GASKET KIT View ›
- 360480FRONT COVER 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 | 3406E · C15 · C16 · C18 |
| Condition | New |
| Stage / Tier | Standard |
Cataloged cross-reference numbers for this product. Confirm fitment before ordering.
| Number |
|---|
| 6V5048 |
| 9X0934 |
| 3036666 |
| 4333-1823589C1 |
| 1823589 |
| 1823589C1 |
| 9X7378 |
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.