CUMMINS 3904166 GENUINE ENGINE CYLINDER REPAIR SLEEVE - OEM FOR 1989-2007 5.9L CUMMINS

The Cummins 3904166 Genuine Engine Cylinder Repair Sleeve is designed to restore damaged or worn engine cylinders in 1989-2007 Dodge Ram 5.9L Cummins diesel engines. This OEM-quality sleeve brings your block back to original bore dimensions, allowing for correct piston fitment and sealing.

Perfect for stock rebuilds, high-performance applications, or repairing cylinder wall damage without replacing the entire block.

Features & Benefits

• OEM Quality: Manufactured by Cummins for factory-spec fit and durability.
• Block Repair Solution: Saves damaged blocks by restoring bore integrity.
• Performance Ready: Compatible with both stock and high-performance pistons.

Cross Reference Part Numbers

• Cummins 3904166
• Replaces: 3904167, 3904168
• Interstate McBee M-3904166

Frequently Asked Questions

When should I use a cylinder repair sleeve?

When the cylinder wall is cracked, deeply scored, or out of spec and cannot be corrected with boring alone.

Do I need machining for installation?

Yes. Proper installation requires block machining to accept the sleeve and finish-honing to match piston size.

Is this suitable for high-boost builds?

Yes. This OEM sleeve can handle high boost and power levels when installed correctly.

Related Engine Rebuild Components

• Cummins Pistons & Ring Kits - OEM & performance pistons for all bore sizes.
• Cummins Engine Gasket Sets - Full and lower gasket kits for complete rebuilds.
• Cummins Crankshaft Bearings - Main and rod bearings for precision rebuilds.
• Cummins Connecting Rods - OEM and upgraded rods for stock & race engines.