Product Description
The CUMMINS 3902343 OEM CYLINDER HEAD ALIGNMENT DOWEL (RING DOWEL) is designed for 1989–2018 5.9L and 6.7L Cummins diesel engines. This genuine Cummins alignment dowel helps ensure proper cylinder head positioning and alignment during engine assembly and repair.
Use this part when replacing cylinder heads, rebuilding an engine, or servicing the block-to-head interface. Proper alignment is critical for head gasket sealing, fastener positioning, and long-term engine reliability. Always verify fitment by engine serial number before ordering.
FEATURES
- Genuine Cummins OEM alignment dowel
- Helps ensure accurate cylinder head positioning
- Direct-fit replacement for applicable Cummins engines
- Supports proper head gasket alignment and sealing
- Recommended during cylinder head replacement or engine rebuilds
FITMENT
- 1989–1998 Dodge Ram 2500/3500 5.9L Cummins 12-Valve
- 1998.5–2002 Dodge Ram 2500/3500 5.9L Cummins 24-Valve
- 2003–2007 Dodge Ram 2500/3500 5.9L Cummins Common Rail
- 2007.5–2018 Ram 2500/3500 6.7L Cummins
- Select Cummins industrial, agricultural, marine, and commercial applications
WHAT'S INCLUDED
- 1 Cummins 3902343 OEM Cylinder Head Alignment Dowel (Ring Dowel)
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 3902343
- Cummins Cylinder Head Gaskets
- Cummins Head Bolt and Stud Kits
- Cummins Cylinder Head Components
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 3902343
- Part Type: Cylinder Head Alignment Dowel / Ring Dowel
- Engine Compatibility: 5.9L Cummins, 6.7L Cummins
- Fitment Years: 1989–2018
- Vehicle Application: Dodge Ram / Ram 2500 and 3500
- Condition: New OEM Cummins
- Material: Hardened Steel
- Installation Location: Engine Block to Cylinder Head
FAQ
Will this part fit my truck?
This alignment dowel fits many 1989–2018 5.9L and 6.7L Cummins applications. Always verify fitment by engine serial number before ordering.
What does a cylinder head alignment dowel do?
The alignment dowel properly locates the cylinder head on the engine block to ensure correct gasket alignment, fastener positioning, and sealing.
Is this a genuine Cummins part?
Yes. Cummins 3902343 is a genuine OEM Cummins cylinder head alignment dowel.
Should alignment dowels be replaced during a head gasket repair?
Inspection is recommended whenever the cylinder head is removed. Replace damaged, corroded, or worn dowels to ensure proper cylinder head alignment.
How many dowels are used on a Cummins engine?
The quantity varies by application. Always reference the appropriate Cummins service information for your engine configuration.
Do I need any related parts?
When servicing the cylinder head, inspect the head gasket, head bolts or studs, coolant passages, and cylinder head components for wear or damage.
