Pump-to-Block EPDM O-Ring, PAI 121316 (OEM 3678724), Pack of 5
Used In These Kits
This part is included in 14 engine & overhaul kits — find yours below.
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131639LOWER GASKET KIT In stock -
132071Cummins ISX 15 ENGINE FRONT COVER GASKET KIT In stock -
132074Cummins ISX SERIES FRONT GASKET In stock -
132083-100O-RING GASKET KIT In stock -
132090Cummins ISX12 CUMMINS LOWER GASKET KIT Confirm lead time -
181877WATER PUMP ASSEMBLY KIT In stock -
181879Cummins ISX SERIES WATER PUMP ASSEMBLY KIT In stock -
181882Cummins WATER PUMP ASSEMBLY KIT In stock -
181902REAR COVER WATER PUMP REPAIR KIT In stock -
181929Flat Mount Water Pump Kit, PAI (OEM 3683652), Pack of 1 In stock -
181961Cummins ISX SERIES WATER PUMP ASSEMBLY In stock -
181973Cummins WATER PUMP KIT In stock - 181978WATER PUMP ASSEMBLY View ›
- 182007WATER PUMP ASSEMBLY View ›
- 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 |
| Condition | New |
| Stage / Tier | Standard |
Pack of 5.
PAI 121316 is a Pump-to-Block EPDM O-Ring. PAI describes a pump-to-block O-ring, peroxide cured EPDM, 75 durometer and TFE coated reddish brown finish, with 0.118-inch cross-section and 2.598-inch inside diameter. Manufacturer-designated parent reference: CUMMINS 3678724.
Manufacturer product cross-references
CUMMINS 3678724
PAI Part #: 121316
OEM References:
- CUMMINS 3678724
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 |
|---|
| 3678724 |
| CUMMINS 3678724 |
| PAI 121316 |
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.