MAHLE lists the S42221 ring set for the 5.9L 12V and 24V Cummins. Each set rings one cylinder in a standard 4.016 in. bore. It fits 1989-2002 Dodge Ram 5.9L 12V and 24V Cummins.

Material: Chrome ductile iron. No core charge applies to this part.

Key Features & Benefits

• Rings: 3.0 mm and 2.38 mm compression rings, 4.0 mm oil ring.
• Quantity: Single cylinder set. Six needed per engine.
• Size: Standard, 4.016 in. (102.0 mm) bore.
• Replaces: Cummins OEM 3938177.

Technical Specifications

• Manufacturer/Brand: MAHLE
• Part Number/SKU: S42221 (mciS42221)
• Product Type: Piston Ring Set STD
• Material/Finish: Chrome ductile iron.
• Dimensions: Standard, 4.016 in. (102.0 mm) bore.
• Replaces: Cummins OEM 3938177.
• Truck Compatibility: 1989-2002 Dodge Ram 5.9L 12V and 24V Cummins
• Engine Platform: 5.9L 12V / 24V Cummins
• Core Requirement: No core required

Vehicle Fitment & Technical Installation Notes

Fits 1989-2002 Dodge Ram 5.9L 12V and 24V Cummins.

Installation Tip: Order six sets, and measure your bores to confirm they are standard size.