Product Description
Cummins 3802376 — Lower Engine Gasket Set (5.9L 12-Valve)
MPN: 3802376 | Also Known As: lower gasket set, bottom-end gasket kit | Cross-Refs: 3802267, 3802029
Why This Part
- ✓ OE kit for sealing the lower end (oil pan area, front/rear seals, etc.).
- ✓ Direct-fit for 5.9L 12V Ram applications (’89–’98), plus industrial 6B/QSB uses.
- ✓ Multi-piece oil pan gasket and key seals help stop leaks and restore oil pressure integrity.
- ✓ Genuine Cummins components for reliable, long-term sealing.
Quick Specs
| Type | Lower engine gasket set (bottom-end) |
|---|---|
| OE Part # | 3802376 (cross: 3802267, 3802029) |
| Platform | 5.9L 12V 6BT/ISB; 6B 5.9 / G5.9 / QSB 5.9 (industrial) |
| Qty | Kit — contents vary by CPL; always verify by VIN/ESN |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1989–1998 | 5.9L 12-Valve (6BT/ISB) | Ram 2500/3500 |
Industrial/Off-Highway: 6B 5.9 / G5.9 / QSB 5.9 (often non-certified variants). Always confirm by ESN/CPL for exact contents.
Often Paired With
- Upper Engine Gasket Kits: 4089649 (Std) · 4089651 (+.020)
- Oil pan hardware: XDP XD621 oil pan bolt kit
- Fluids/Sealant: fresh oil/filter + Cummins-approved RTV where specified
What’s In The Box
- (1) Genuine Cummins Lower Engine Gasket Set (3802376)
- Kit makeup varies by ESN/CPL; see service manual for locations and torque.
Install Tips
- Clean all sealing surfaces; check pan rails for straightness.
- Use correct torque sequence; re-check after initial heat cycle.
- If the engine had contamination or leaks, inspect crank seals and rear main area closely.
FAQ
WILL THIS FIT MY 1989–1998 5.9L CUMMINS RAM?Yes—this is the correct lower gasket kit for most 12-valve 5.9L Rams (’89–’98). Always verify by VIN/ESN/CPL before ordering.
WHAT’S INCLUDED IN THE LOWER ENGINE GASKET SET?Typical contents include the multi-piece oil pan gasket, front/rear main area seals, O-rings, sealing washers, and related lower-end gaskets. Exact items vary by ESN/CPL.
DO I ALSO NEED AN UPPER ENGINE GASKET KIT?If you’re doing a full refresh, pair with 4089649 (standard) or 4089651 (+.020) upper gasket kits for the top end.
IS THIS A GENUINE CUMMINS KIT?Yes—OE Cummins 3802376 with factory materials and fit.
DOES THIS FIT INDUSTRIAL 6B/QSB ENGINES?Often yes (6B 5.9 / G5.9 / QSB 5.9), especially non-certified variants—confirm by ESN/CPL for content match.
