Product Description
The CUMMINS 3904217 OEM MAIN BEARING CAP BOLT 14MM HEX HEAD CAP SCREW is designed for 1989–1997 5.9L Cummins 12-valve diesel engines. This genuine Cummins fastener is used to secure the main bearing caps to the engine block, helping maintain proper crankshaft support and bottom-end integrity.
Use this part during engine rebuilds, main bearing service, crankshaft repairs, or whenever damaged or stretched hardware requires replacement. Always verify fitment by engine serial number and application before ordering.
FEATURES
- Genuine Cummins OEM main bearing cap bolt
- 14mm hex head cap screw design
- Designed for 1989–1997 5.9L Cummins 12V engines
- Helps maintain proper main bearing cap clamping force
- Recommended for engine rebuild and bottom-end service work
- Direct replacement factory hardware
FITMENT
- 1989–1993 Dodge Ram 2500/3500 5.9L Cummins 12V
- 1994–1997 Dodge Ram 2500/3500 5.9L Cummins 12V
- Select Cummins 6BT 5.9L industrial and commercial applications
WHAT'S INCLUDED
- 1 Cummins 3904217 OEM Main Bearing Cap Bolt
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 3904217
- Main bearing service components
- Crankshaft and bottom-end rebuild components
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 3904217
- Part Type: Main Bearing Cap Bolt
- Fastener Style: 14MM Hex Head Cap Screw
- Engine Compatibility: 5.9L Cummins 12V
- Fitment Years: 1989–1997
- Vehicle Application: Dodge Ram 2500 and 3500
- Condition: New
- Quantity: Sold Individually
FAQ
Will this part fit my truck?
This part fits the applications listed above. Always verify your engine serial number and application before ordering.
Is this a direct replacement?
Yes. Cummins 3904217 is a genuine OEM replacement main bearing cap bolt for the listed applications.
What is included?
This listing includes one Cummins 3904217 OEM main bearing cap bolt.
What does the main bearing cap bolt do?
The main bearing cap bolt secures the main bearing caps to the engine block, helping maintain proper crankshaft alignment and support.
Should main bearing cap bolts be replaced during an engine rebuild?
Many engine builders recommend inspecting all hardware carefully and replacing any bolts that show wear, corrosion, stretching, or damage during a rebuild.
Do I need any related parts?
Inspect the main bearings, crankshaft, bearing caps, seals, and related bottom-end components during installation and replace worn parts as necessary.
