Product Description
Genuine Cummins 3914385 OEM Timing Gear Housing Cover Gasket for first-gen 5.9L 12-valve Ram. This is the OE front/timing cover gasket that seals the stamped front timing cover to the gear housing on BS3/B-Series 5.9 engines—perfect for fixing oil leaks, KDP repairs, and front-of-engine reseals on 1989–1993 Dodge Ram 2500/3500 with the 5.9L Cummins.
Why Choose CUMMINS 3914385 for Your 5.9L 12V?
- OE Cummins gasket that seals the timing/front cover to the gear housing.
- Direct-fit for 1989–1993 Dodge Ram 2500/3500 5.9L 12-valve (6BT) – verify by VIN/ESN.
- Helps stop engine oil leaks at the front cover interface during KDP and timing work.
- Correct OEM material and profile for reliable compression and long-term sealing.
- Works on many B-Series / BS3 / 4BT / 6BT industrial engines using the same gear housing design.
Fitment – Verified Automotive Applications
Automotive – Dodge Ram (Front/Timing Cover to Gear Housing)
- 1989–1993 Dodge Ram 2500 – 5.9L Cummins 12-Valve (6BT, VE rotary pump)
- 1989–1993 Dodge Ram 3500 – 5.9L Cummins 12-Valve (6BT, VE rotary pump)
Industrial / Off-Highway & Global B-Series: Also used on a wide range of Cummins 4B3.9, 6B5.9, ISB and related B-Series engines in vocational trucks, buses, agricultural and construction equipment—always confirm by engine serial number (ESN) before ordering for non-Ram applications.
Cross-Reference & Recommended Cummins Companion Parts
Common Cummins cross-reference/ID numbers (for identification only):
3902369, 3904492, 3905143, 3910500, 3914385, 3960319, 5292292
Recommended Cummins parts on CPP Diesel (front-of-engine reseal):
- CUMMINS 3287076 OEM FRONT TIMING GEAR COVER W/ CRANKSHAFT SEAL – 5.9L 12V (1989–1993) – OE front timing cover with seal.
- CUMMINS 3920758 OEM TIMING GEAR CASE HOUSING (GEAR HOUSING) – 5.9L 12-VALVE (1989–1993) – Inner timing gear case housing.
- CUMMINS 3939355 OEM VE PUMP TO GEAR HOUSING GASKET – 5.9L 12-VALVE (1989–1993) – VE pump to gear housing gasket.
- CUMMINS 3938156 OEM TIMING GEAR HOUSING GASKET – 5.9L 12V/24V (1989–2002) – Gear housing-to-block gasket for broader 5.9 applications.
What’s In The Box
- (1) Genuine Cummins 3914385 Timing Gear Housing Cover Gasket
- Front cover, crank seal, bolts, and other hardware sold separately.
Install Tips
- Thoroughly clean the front cover and gear housing mating surfaces; remove all old gasket material without gouging aluminum/steel.
- Dry-fit the cover onto the housing and verify dowel and bolt alignment before final assembly.
- Follow the Cummins torque sequence and specs for the front cover fasteners.
- Inspect and address the Killer Dowel Pin (KDP) while the cover is off for long-term reliability.
- After reassembly, run the engine to operating temp and recheck for oil leaks at the cover joint.
Specifications for cummins 3914385
| Spec | Value |
|---|---|
| Brand | Cummins Genuine Parts |
| Part Number | 3914385 |
| Product Type | Timing gear housing cover gasket (front/timing cover gasket) |
| Engine Application | BS3/B-Series 5.9L Cummins (4B/6B/ISB) – front cover to gear housing interface |
| Primary Vehicle Fitment | 1989–1993 Dodge Ram 2500/3500 with 5.9L Cummins 12-Valve (6BT, VE rotary pump) |
| Quantity Required | 1 per engine |
| Shipping Weight (approx.) | 0.8 lb (0.36 kg) |
| Package Dimensions (approx.) | 13.13 in (W) × 21.25 in (D) × 0.06 in (H) |
| Shipping Method | Standard ground – shipping calculated at checkout (CPP Diesel) |
| Cross Reference / Related Cummins Part Numbers | 3902369, 3904492, 3905143, 3910500, 3914385, 3960319, 5292292 (ID only – verify supersessions in Cummins literature) |
| GTIN | Not specified in publicly available Cummins catalog or major distributors (no GTIN listed). |
| UPC | Not specified in publicly available Cummins catalog or major distributors (no UPC listed). |
| E-Codes / Emissions Notes | Used on BS3 B-Series 5.9L and related ISB/QSB engines; emissions certification depends on engine ESN and vehicle platform. |
| Prop 65 Warning | This product can expose you to chemicals including petroleum-based and metallic components, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. |
FAQ
WILL THIS FIT MY 1989–1993 5.9L 12-VALVE CUMMINS RAM?Yes. Cummins 3914385 is the OE timing/gear cover gasket for first-gen 5.9L 12-valve Ram 2500/3500 applications, sealing the stamped front cover to the timing gear housing. CPP Diesel still recommends confirming by VIN or engine serial number (ESN) if you’re unsure about past engine work.
IS THIS THE GASKET BETWEEN THE FRONT COVER AND THE GEAR HOUSING?Correct. This gasket sits between the front/timing cover and the gear housing. It is not the housing-to-block gasket (that is typically Cummins 3938156).
WHAT OTHER PARTS SHOULD I REPLACE WHILE I’M IN THERE?
Most front-of-engine reseals pair 3914385 with a new front cover (such as CUMMINS 3287076 timing cover w/ seal ) and a front crankshaft seal kit like 3802820 or 3937111. Many techs also reseal or upgrade the gear housing using CUMMINS 3938156 gear housing gasket at the same time.
IS THIS A GENUINE CUMMINS GASKET OR AFTERMARKET?This listing is for a genuine Cummins 3914385 gear cover/timing cover gasket supplied through CPP Diesel’s Cummins parts channel—not a “will-fit” aftermarket piece. That means correct material, thickness, and profile for long-term sealing.
DOES THIS FIT LATER 24-VALVE OR COMMON-RAIL ENGINES?
No. Cummins 3914385 is targeted at early 5.9L applications and is best known for 1989–1993 12-valve trucks and related B-Series engines. Later 24-valve / common-rail engines use different covers, housings, and gaskets—always verify by ESN.
