Product Description
The CUMMINS 3904166 OEM CYLINDER REPAIR SLEEVE (SALVAGE SLEEVE) is designed for select 4BT, 6BT, and ISB 5.9L Cummins diesel engines. This genuine Cummins repair sleeve is used to restore damaged or worn cylinder bores during engine rebuilding and machining operations while maintaining proper piston-to-cylinder clearances and engine reliability.
Use this cylinder repair sleeve when repairing scored, damaged, worn, or oversized cylinder bores that would otherwise make the engine block unusable. Always verify engine application and machining requirements before ordering.
FEATURES
- Genuine Cummins OEM cylinder repair sleeve
- Designed for 4BT, 6BT, and ISB 5.9L Cummins engines
- Restores damaged or worn cylinder bores
- Helps return engine blocks to serviceable condition
- Ideal for engine rebuilds and machine shop repairs
- Manufactured to Cummins OEM specifications
FITMENT
- 1989–1998 Cummins 4BT 3.9L Applications
- 1989–1998 Dodge Ram 2500/3500 5.9L Cummins 6BT
- 1998.5–2002 Dodge Ram 2500/3500 5.9L Cummins ISB
- 2003–2007 Dodge Ram 2500/3500 5.9L Cummins Common Rail
- Select Industrial, Agricultural, Marine, and Commercial Cummins Applications
WHAT'S INCLUDED
- 1 Cummins 3904166 OEM Cylinder Repair Sleeve
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 3904166
- Cummins Cylinder Block Components
- Cummins Pistons and Ring Sets
- Cummins Engine Rebuild Components
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 3904166
- Part Type: Cylinder Repair Sleeve / Salvage Sleeve
- Engine Compatibility: 4BT, 6BT, ISB 5.9L Cummins
- Fitment Years: 1989–2007
- Vehicle Application: Dodge Ram 2500/3500 and Industrial Cummins Applications
- Condition: New OEM Cummins
- Installation Type: Machine Shop Installation Required
- Application: Cylinder Bore Repair
FAQ
Will this repair sleeve fit my engine?
This sleeve is commonly used in 4BT, 6BT, and ISB 5.9L Cummins engines. Always verify fitment by engine serial number and machining specifications before ordering.
What is a cylinder repair sleeve?
A cylinder repair sleeve, sometimes called a salvage sleeve, is installed into a damaged cylinder bore to restore proper dimensions and allow the engine block to be reused.
Is this a genuine Cummins part?
Yes. Cummins 3904166 is a genuine OEM cylinder repair sleeve manufactured to Cummins specifications.
Can I install this sleeve myself?
Installation typically requires specialized machining equipment and should be performed by a qualified machine shop or experienced engine builder.
When should a cylinder repair sleeve be used?
Repair sleeves are commonly used when a cylinder has excessive wear, scoring, corrosion, or damage that exceeds standard machining limits.
Do I need any related parts?
During engine repair, inspect pistons, rings, bearings, gaskets, seals, and other cylinder block components and replace them as necessary.
