Caterpillar O-Ring, PAI 321428 (OEM 9X7722), Pack of 6
Used In These Kits
This part is included in 1 engine & overhaul kits — find yours below.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
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321296Caterpillar O-Ring, PAI (OEM 2153198), Pack of 6 Ships from supplier · Lead time confirmed when you order -
331561Cat / Caterpillar 3176 SERIES UPPER GASKET KIT Ships from supplier · Lead time confirmed when you order -
321282Caterpillar O-Ring, PAI (OEM 9X7317), Pack of 6 Ships from supplier · Lead time confirmed when you order -
331386Caterpillar 3176/C10/C13 Valve Cover Base Gasket, PAI (OEM 1095309), Pack of 1 Ships from supplier · Lead time confirmed when you order -
321209Caterpillar HNBR O-Ring, PAI (OEM 1142687), Pack of 5 Ships from supplier · Lead time confirmed when you order
| Engine family | Caterpillar 3176 |
| Brand | PAI Industries |
| Part Category | Seals & O-Rings |
| Sub-Type | O-Ring |
| Engine Make | Caterpillar |
| Engine Model | 3176 |
| Condition | New |
| Stage / Tier | Standard |
PAI Industries 321428 o-ring for Caterpillar 3176. Replaces Caterpillar 3E6798. Pack of 6. 24-month warranty.
PAI Part #: 321428
OEM References:
- CATERPILLAR 3E6798
- CATERPILLAR 9X7722
Applications:
- CATERPILLAR 3176 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 |
|---|
| 3E6798 |
| 9X7722 |
| CATERPILLAR 3E6798 |
| CATERPILLAR 9X7722 |
| PAI 321428 |
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.






