Product Description
The CUMMINS 3920758 OEM TIMING GEAR CASE HOUSING (GEAR HOUSING) is designed for 1989–1993 5.9L 12-valve Cummins diesel engines. This genuine Cummins gear housing provides the mounting structure and support for the engine timing gear train while maintaining proper alignment and reliability.
Use this part when repairing damaged front engine housings, rebuilding a 12-valve Cummins engine, or replacing worn timing gear case components. Always verify fitment by engine serial number before ordering.
FEATURES
- Genuine Cummins OEM timing gear case housing
- Designed for 1989–1993 5.9L 12-valve Cummins applications
- Supports proper timing gear alignment and operation
- Direct-fit replacement for damaged or worn housings
- Ideal for engine rebuilds and front cover repairs
- Manufactured to Cummins OEM specifications
FITMENT
- 1989–1993 Dodge Ram D250/D350 5.9L Cummins 12-Valve
- 1989–1993 Dodge Ram W250/W350 5.9L Cummins 12-Valve
- Select Cummins 6BT 5.9L industrial and commercial applications
WHAT'S INCLUDED
- 1 Cummins 3920758 OEM Timing Gear Case Housing
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 3920758
- Timing cover components
- Front crankshaft seal components
- Timing gear service parts
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 3920758
- Part Type: Timing Gear Case Housing / Gear Housing
- Engine Compatibility: 5.9L 12-Valve Cummins (6BT)
- Fitment Years: 1989–1993
- Vehicle Application: Dodge Ram D/W250 and D/W350
- Condition: New OEM Cummins
- Quantity: Sold Individually
FAQ
Will this part fit my truck?
This housing fits the applications listed above. Always verify your engine serial number and part number before ordering.
Is this a direct replacement?
Yes. Cummins 3920758 is a genuine OEM replacement timing gear case housing designed for direct fitment on applicable engines.
What is included?
This listing includes one Cummins 3920758 OEM timing gear case housing.
What does the timing gear housing do?
The timing gear housing supports and aligns the front gear train components while providing mounting points for related timing and accessory components.
When should the gear housing be replaced?
Replacement is recommended if the housing becomes cracked, damaged, excessively worn, or if alignment issues are discovered during engine service.
Do I need any related parts?
Inspect timing gears, seals, gaskets, dowel pins, front cover components, and mounting hardware during installation and replace worn components as necessary.
