Caterpillar Buna N O-Ring, PAI 321214 (OEM 1H1023), Pack of 6
Used In These Kits
This part is included in 13 engine & overhaul kits — find yours below.
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331129Cummins OVERHAUL GASKET KIT In stock -
331170Cat / Caterpillar 3400 SERIES UPPER GASKET KIT In stock -
331200Cat / Caterpillar UPPER GASKET KIT In stock -
331228Caterpillar 3400 Upper Gasket Kit In stock -
331229Cat / Caterpillar 3400 SERIES UPPER 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 -
331235Cat / Caterpillar 3400 SERIES UPPER GASKET KIT In stock -
331237Cat / Caterpillar 3400 SERIES UPPER GASKET KIT In stock -
331238Cat / Caterpillar 3400 SERIES UPPER GASKET KIT In stock -
331239Cat / Caterpillar 3400 SERIES UPPER GASKET KIT In stock - 331240UPPER GASKET KIT View ›
- No kits match that search.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
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321222Caterpillar Buna N O-Ring, PAI (OEM 1171385), Pack of 6 In stock -
336030Caterpillar 3400 Seal, PAI (OEM 9L9098), Pack of 6 In stock -
321276Caterpillar O-Ring, PAI (OEM 2147568), Pack of 10 In stock -
331254Caterpillar 3406E / C15 / C16 Head Gasket Seal In stock -
321209Caterpillar HNBR O-Ring, PAI (OEM 1142687), Pack of 5 In stock
| Brand | PAI Industries |
| Part Category | Seals & O-Rings |
| Sub-Type | O-Ring |
| Engine Make | Caterpillar |
| Engine Model | 3400 |
| Condition | New |
| Stage / Tier | Standard |
PAI 321214 is a buna n o-ring for Caterpillar applications. PAI specifies Buna N construction. The manufacturer designates product-level OEM 1H1023. PAI cross-references Caterpillar 1H1023. PAI lists these application categories: Caterpillar 3400 Series. Confirm the complete required part number before ordering.
Pack of 6.
Manufacturer product cross-references
Caterpillar 7C0031
PAI Part #: 321214
OEM References:
- CATERPILLAR 1H1023
- CATERPILLAR 7C0031
Applications:
- CATERPILLAR 3400 SERIES
Warranty: 2.0 year(s)
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 |
|---|
| 1H1023 |
| 7C0031 |
| CATERPILLAR 1H1023 |
| CATERPILLAR 7C0031 |
| PAI 321214 |
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.

















