Product Description
Cummins 3949326 OEM Ring Dowel – Front Gear Housing/Cylinder Block Alignment – ISB 5.9L/6.7L
The Cummins 3949326 OEM Ring Dowel is a genuine Cummins alignment dowel designed to precisely locate and align the front gear housing to the cylinder block on 5.9L and 6.7L ISB Cummins diesel engines. Proper alignment between the gear housing and engine block is critical for maintaining timing gear accuracy, preventing premature component wear, and ensuring reliable engine operation.
Manufactured to Cummins OEM specifications, the 3949326 ring dowel provides the exact fit and dimensional accuracy required during engine assembly, front cover replacement, gear housing service, and engine rebuild procedures. This component is commonly replaced during major engine repairs to ensure proper alignment and long-term durability.
Features
- Genuine Cummins OEM component
- Precision-machined alignment ring dowel
- Locates front gear housing to cylinder block
- Maintains proper gear train alignment
- Helps prevent timing gear misalignment
- OEM fit, finish, and dimensional accuracy
- Ideal for engine rebuilds and front cover service
- Designed for long-term durability and reliability
- Direct replacement for worn or damaged dowels
- Manufactured to Cummins factory specifications
Fitment
- 2003-2007 Dodge Ram 2500/3500 5.9L Cummins
- 2007.5-2018 Dodge Ram and Ram 2500/3500 6.7L Cummins
- Cummins ISB 5.9L diesel engines
- Cummins ISB 6.7L diesel engines
- Industrial Cummins ISB applications utilizing part number 3949326
- Engine rebuild and repair applications
- Front gear housing replacement procedures
Note: Always verify engine serial number and application compatibility before ordering. Proper installation procedures should be followed to ensure accurate front gear housing alignment.
What's Included
- One (1) Genuine Cummins 3949326 Ring Dowel
Specifications
- Manufacturer: Cummins
- Part Number: 3949326
- Product Type: Ring Dowel
- Application: Front Gear Housing Alignment
- Installation Location: Front Gear Housing to Cylinder Block
- Engine Family: Cummins ISB
- Engine Compatibility: 5.9L and 6.7L Cummins
- OEM Replacement: Yes
- Material: Hardened Steel Construction
- Function: Housing and Block Alignment
Cross Reference Numbers
3949326, Cummins 3949326, OEM Ring Dowel, Front Gear Housing Dowel, Cylinder Block Alignment Dowel
FAQ
What does the Cummins 3949326 ring dowel do?
The ring dowel aligns the front gear housing to the engine block, helping maintain proper gear train positioning and timing component alignment.
Should I replace the ring dowel during an engine rebuild?
Yes. Many engine builders recommend inspecting or replacing alignment dowels during major engine service to ensure proper component alignment and prevent assembly issues.
Will this fit both 5.9L and 6.7L Cummins engines?
Yes. The 3949326 ring dowel is commonly used on ISB 5.9L and 6.7L Cummins applications. Always verify compatibility using your engine serial number.
Is this a genuine Cummins part?
Yes. The 3949326 is an OEM Cummins component manufactured to factory specifications.
Where is this dowel installed?
This ring dowel is installed between the front gear housing and the cylinder block to ensure precise alignment during assembly.
Can a damaged dowel cause engine problems?
Improper alignment can contribute to gear train issues, abnormal wear, and assembly problems. Replacing damaged or worn dowels helps maintain correct engine geometry.
