Viton O-Ring, PAI 121337 (OEM 3977393), Pack of 6
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 | Cummins |
| Condition | New |
| Stage / Tier | Standard |
Pack of 6.
PAI 121337 is a Viton O-Ring. PAI specifies Viton material, 75 durometer, 0.118-inch cross-section and 0.826-inch inside diameter. Manufacturer-designated parent reference: CUMMINS 3977393.
Manufacturer product cross-references
CUMMINS 3977393
PAI Part #: 121337
OEM References:
- CUMMINS 3977393
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 |
|---|
| 3977393 |
| CUMMINS 3977393 |
| PAI 121337 |
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.