Caterpillar O-Ring, PAI 321309 (OEM 1H7339), Pack of 10
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 |
Pack of 10.
PAI 321309 is an o-ring. PAI lists Buna N material. The listed durometer is 75. Listed cross section is 0.139 inch. Listed inside diameter is 2.984 inches. PAI describes this ring as peroxide cured. The manufacturer designates product-level OEM 1H7339.
Compatible Engines
PAI lists Caterpillar 3400 Series. Match the complete required part number and listed application before ordering.
Manufacturer product cross-references
Caterpillar 03-8761
Caterpillar 03-9857
Caterpillar 038761
Caterpillar 039857
Caterpillar 175-7896
Caterpillar 1757896
Caterpillar 185-1608
Caterpillar 1851608
Caterpillar 1G-8458
Caterpillar 1G8458
Caterpillar 1H-6203
Caterpillar 1H-7339
Caterpillar 1H6203
Caterpillar 1H7339
Caterpillar 203-0265
Caterpillar 2030265
Caterpillar 2U-5322
Caterpillar 2U5322
Caterpillar 5H-6497
Caterpillar 5H6497
Caterpillar 7R-7148
Caterpillar 7R7148
Caterpillar 8C-7432
Caterpillar 8C7432
Caterpillar 8T-7251
Caterpillar 8T7251
Caterpillar 9W-4959
Caterpillar 9W4959
Cummins 145586
Compare the complete part number, material and required seal specification before ordering.
PAI Part #: 321309
OEM References:
- CATERPILLAR 03-8761
- CATERPILLAR 03-9857
- CATERPILLAR 038761
- CATERPILLAR 039857
- CATERPILLAR 175-7896
- CATERPILLAR 1757896
- CATERPILLAR 185-1608
- CATERPILLAR 1851608
- CATERPILLAR 1G-8458
- CATERPILLAR 1G8458
- CATERPILLAR 1H-6203
- CATERPILLAR 1H-7339
- CATERPILLAR 1H6203
- CATERPILLAR 1H7339
- CATERPILLAR 203-0265
- CATERPILLAR 2030265
- CATERPILLAR 2U-5322
- CATERPILLAR 2U5322
- CATERPILLAR 5H-6497
- CATERPILLAR 5H6497
- CATERPILLAR 7R-7148
- CATERPILLAR 7R7148
- CATERPILLAR 8C-7432
- CATERPILLAR 8C7432
- CATERPILLAR 8T-7251
- CATERPILLAR 8T7251
- CATERPILLAR 9W-4959
- CATERPILLAR 9W4959
- CUMMINS 145586
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 |
|---|
| 03-8761 |
| 03-9857 |
| 038761 |
| 039857 |
| 175-7896 |
| 1757896 |
| 185-1608 |
| 1851608 |
| 1G-8458 |
| 1G8458 |
| 1H-6203 |
| 1H-7339 |
| 1H6203 |
| 1H7339 |
| 203-0265 |
| 2030265 |
| 2U-5322 |
| 2U5322 |
| 5H-6497 |
| 5H6497 |
| 7R-7148 |
| 7R7148 |
| 8C-7432 |
| 8C7432 |
| 8T-7251 |
| 8T7251 |
| 9W-4959 |
| 9W4959 |
| 145586 |
| CATERPILLAR 03-8761 |
| CATERPILLAR 03-9857 |
| CATERPILLAR 038761 |
| CATERPILLAR 039857 |
| CATERPILLAR 175-7896 |
| CATERPILLAR 1757896 |
| CATERPILLAR 185-1608 |
| CATERPILLAR 1851608 |
| CATERPILLAR 1G-8458 |
| CATERPILLAR 1G8458 |
| CATERPILLAR 1H-6203 |
| CATERPILLAR 1H-7339 |
| CATERPILLAR 1H6203 |
| CATERPILLAR 1H7339 |
| CATERPILLAR 203-0265 |
| CATERPILLAR 2030265 |
| CATERPILLAR 2U-5322 |
| CATERPILLAR 2U5322 |
| CATERPILLAR 5H-6497 |
| CATERPILLAR 5H6497 |
| CATERPILLAR 7R-7148 |
| CATERPILLAR 7R7148 |
| CATERPILLAR 8C-7432 |
| CATERPILLAR 8C7432 |
| CATERPILLAR 8T-7251 |
| CATERPILLAR 8T7251 |
| CATERPILLAR 9W-4959 |
| CATERPILLAR 9W4959 |
| CUMMINS 145586 |
| PAI 321309 |
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.





