Product Description
Cummins 3920779 OEM Cylinder Head Bolt (Short) – 5.9L 12-Valve Cummins (1989-1998)
The Cummins 3920779 OEM Cylinder Head Bolt (Short) is a genuine Cummins replacement fastener designed for use in 5.9L 12-valve Cummins diesel engines found in 1989-1998 Dodge Ram trucks. Manufactured to meet original Cummins specifications, this short cylinder head bolt provides the proper clamping force required to maintain cylinder head sealing and long-term engine reliability.
Whether you're performing a cylinder head replacement, head gasket repair, engine rebuild, or restoring factory fastener integrity, the Cummins 3920779 head bolt delivers the fit, strength, and durability expected from an OEM Cummins component. Using genuine Cummins fasteners helps ensure proper torque retention and dependable sealing under demanding diesel operating conditions.
Features
- Genuine Cummins OEM replacement cylinder head bolt
- Short head bolt configuration
- Manufactured to original Cummins specifications
- Designed for proper cylinder head clamping force
- Direct replacement for worn or damaged factory bolts
- Ideal for cylinder head and head gasket service
- Maintains proper sealing between cylinder head and engine block
- Built for durability in diesel engine applications
- OEM quality fit and performance
- Trusted Cummins factory replacement component
Fitment
- 1989 Dodge Ram 2500 5.9L Cummins
- 1990 Dodge Ram 2500 5.9L Cummins
- 1991 Dodge Ram 2500 5.9L Cummins
- 1992 Dodge Ram 2500 5.9L Cummins
- 1993 Dodge Ram 2500 5.9L Cummins
- 1994 Dodge Ram 2500 5.9L Cummins 12-Valve
- 1995 Dodge Ram 2500 5.9L Cummins 12-Valve
- 1996 Dodge Ram 2500 5.9L Cummins 12-Valve
- 1997 Dodge Ram 2500 5.9L Cummins 12-Valve
- 1998 Dodge Ram 2500 5.9L Cummins 12-Valve
- 1989-1998 Dodge Ram 3500 5.9L Cummins Applications
- Industrial and agricultural 5.9L Cummins applications using OEM part number 3920779
Note: This listing is for an individual short cylinder head bolt. Verify quantity requirements and engine serial number before ordering. Cummins recommends following factory torque procedures and specifications during installation.
What's Included
- One (1) Genuine Cummins 3920779 OEM Short Cylinder Head Bolt
Specifications
- Manufacturer: Cummins
- Part Number: 3920779
- Product Type: Cylinder Head Bolt
- Bolt Style: Short Head Bolt
- Material: OEM Hardened Steel
- Engine Compatibility: 5.9L Cummins 12-Valve
- Engine Family: 6BT Cummins
- Application: Cylinder Head Fastening
- Installation Location: Cylinder Head to Engine Block
- Replacement Type: Genuine Cummins OEM
- Sold As: Individual Bolt
Cross Reference Numbers
3920779, Cummins 3920779, 6BT Head Bolt, 12-Valve Head Bolt, OEM Cummins Cylinder Head Bolt, Cummins Head Fastener
FAQ
What is the Cummins 3920779 used for?
The 3920779 is a genuine Cummins short cylinder head bolt used to secure the cylinder head to the engine block on 5.9L 12-valve Cummins diesel engines.
Is this an OEM Cummins part?
Yes. This is a genuine Cummins OEM replacement component manufactured to factory specifications.
Does this fit all 12-valve Cummins engines?
The 3920779 is commonly used on 5.9L 12-valve Cummins applications. Always verify compatibility using your engine serial number or factory parts catalog before ordering.
Should head bolts be replaced during a head gasket repair?
Many engine builders recommend inspecting and replacing head bolts during major engine service to ensure proper clamping force and long-term reliability.
Is this sold individually or as a complete set?
This part number is sold individually unless otherwise specified. Verify the quantity required for your engine before placing your order.
Can I use this bolt with performance head gaskets?
For stock and mild performance applications, OEM head bolts are commonly used. High-horsepower applications may benefit from aftermarket head studs depending on boost and cylinder pressure levels.
