Product Description
The Cummins 3902332 OEM Camshaft Key (Plain Woodruff) is a genuine factory-engineered component designed to correctly index the camshaft to the cam gear on all 1989–2021 Dodge Ram 5.9L and 6.7L Cummins engines. This precision-cut woodruff key ensures accurate cam timing, long-term durability, and proper valvetrain synchronization—critical for stock, towing, and performance applications.
Because this is a Genuine Cummins part, it maintains OE fitment, metallurgy, and reliability—preventing timing drift, premature engine wear, and camshaft failure caused by off-brand hardware. It is a direct replacement for worn, damaged, or missing cam keys and installs seamlessly into OEM and performance camshafts.
This component is commonly replaced during camshaft upgrades, front cover service, timing set installation, and full engine rebuilds. For customers maintaining authentic Cummins integrity throughout the valvetrain, the 3902332 woodruff key is the exact OE specification component required.
View other genuine Cummins components that complement camshaft service:
FITMENT
- 1989–1998 Dodge Ram 5.9L Cummins 12-Valve
- 1998.5–2002 Dodge Ram 5.9L Cummins 24-Valve
- 2003–2007 Dodge Ram 5.9L Cummins Common Rail
- 2007.5–2021 Dodge Ram 6.7L Cummins
CROSS-REFERENCE
- Cummins: 3902332
- Woodruff Key Equivalent: OEM Only
- Related Cummins Engine Hardware: 3930277 Hydraulic Pump
FAQ
WHAT DOES THE CUMMINS 3902332 CAMSHAFT KEY DO?
The woodruff key locks the camshaft gear to the camshaft, ensuring accurate cam timing and preventing slippage.
SHOULD THIS KEY BE REPLACED DURING A CAMSHAFT SWAP?
Yes. Best practice is to install a new OE key whenever servicing or upgrading the camshaft.
IS THIS A TRUE OEM CUMMINS COMPONENT?
Yes—this is a genuine Cummins part with OE hardness, dimensions, and metallurgy.
CAN THIS KEY BE USED IN PERFORMANCE BUILDS?
Absolutely. OEM Cummins keys are preferred for durability and precision in high-load applications.
WHAT SYMPTOMS INDICATE THE CAM KEY SHOULD BE REPLACED?
Symptoms include timing drift, cam gear movement, front cover noise, or during rebuilds where a fresh key is required.
SPECIFICATIONS
| Specifications for CUMMINS 3902332 | |
|---|---|
| Brand | Cummins Genuine Parts |
| Part Number | 3902332 |
| UPC | 190915184715 |
| GTIN | 0190915184715 |
| Cross Reference | OEM Only |
| E-Codes | N/A (Non-emissions hardware) |
| Shipping Info | Ships via small parcel; lightweight hardware item |
| Prop 65 | No warning required |
