Cummins 4B Viton O-Ring, PAI 121415 (OEM 3969698), Pack of 5
Used In These Kits
This part is included in 2 engine & overhaul kits — find yours below.
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131408Cummins ISC ENGINES LOWER GASKET SET In stock -
131856Cummins LOWER GASKET KIT In stock - 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 | Cummins |
| Engine Model | 4B 3.9 |
| Condition | New |
| Stage / Tier | Standard |
Pack of 5.
PAI 121415. Viton (75) O-ring with brown Teflon finish, 3.917 inch inside diameter x 0.118 inch cross section.
Manufacturer application table: CUMMINS 4B ENGINES 3.9.
Manufacturer product cross-references
CUMMINS 3924605
CUMMINS 3925021
CUMMINS 3969698
DETROIT DIESEL A0179978945
DETROIT A0179978945
Compare the complete part number and listed specifications with your required part before ordering.
PAI Part #: 121415
OEM References:
- CUMMINS 3924605
- CUMMINS 3925021
- CUMMINS 3969698
- DETROIT DIESEL A0179978945
Applications:
- CUMMINS 4B ENGINES 3.9
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 |
|---|
| 3924605 |
| 3925021 |
| 3969698 |
| A0179978945 |
| CUMMINS 3924605 |
| CUMMINS 3925021 |
| CUMMINS 3969698 |
| DETROIT DIESEL A0179978945 |
| PAI 121415 |
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.