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Mahle S42221.020 5.9 Cummins Piston Ring Set (.020 Over)
The Mahle S42221.020 is a premium OE-quality piston ring set designed for +.020" oversize applications on 1989–2002 5.9L Cummins engines (both 12-valve 6BT and 24-valve ISB).
This single-cylinder ring pack includes a ductile iron top compression ring with chrome facing, a cast iron second ring, and a 3-piece oil control ring. Built to original equipment geometry and materials, these rings deliver excellent sealing, reduced oil consumption, fast seat-in, and long service life under the demands of towing, daily driving, and moderate performance use.
Key Details
- Size: +.020" oversize (approx. 4.036" bore)
- Quantity: One cylinder set (order quantity of 6 for a complete engine)
- Fitment: 1989–2002 Dodge Ram 2500/3500 with 5.9L Cummins
Always measure the finished bore, confirm piston compatibility, and file-fit end gaps to the manufacturer’s specifications for best results.
Mahle S42221.020 5.9 Cummins Piston Ring Set (.020 Over)
The Mahle S42221.020 is a premium OE-quality piston ring set designed for +.020" oversize applications on 1989–2002 5.9L Cummins engines (both 12-valve 6BT and 24-valve ISB).
This single-cylinder ring pack includes a ductile iron top compression ring with chrome facing, a cast iron second ring, and a 3-piece oil control ring. Built to original equipment geometry and materials, these rings deliver excellent sealing, reduced oil consumption, fast seat-in, and long service life under the demands of towing, daily driving, and moderate performance use.
Key Details
Size: +.020" oversize (approx. 4.036" bore)
Quantity: One cylinder set (order quantity of 6 for a complete engine)
Fitment: 1989–2002 Dodge Ram 2500/3500 with 5.9L Cummins
Always measure the finished bore, confirm piston compatibility, and file-fit end gaps to the manufacturer’s specifications for best results.[...]
Mahle S42221.020 5.9 Cummins Piston Ring Set (.020 Over)
The Mahle S42221.020 is a premium OE-quality piston ring set designed for +.020" oversize applications on 1989–2002 5.9L Cummins engines (both 12-valve 6BT and 24-valve ISB).
This single-cylinder ring pack includes a ductile iron top compression ring with chrome facing, a cast iron second ring, and a 3-piece oil control ring. Built to original equipment geometry and materials, these rings deliver excellent sealing, reduced oil consumption, fast seat-in, and long service life under the demands of towing, daily driving, and moderate performance use.
Key Details
- Size: +.020" oversize (approx. 4.036" bore)
- Quantity: One cylinder set (order quantity of 6 for a complete engine)
- Fitment: 1989–2002 Dodge Ram 2500/3500 with 5.9L Cummins
Always measure the finished bore, confirm piston compatibility, and file-fit end gaps to the manufacturer’s specifications for best results.
Fits: 5.9 Cummins 1989-2002
Fits: 5.9 Cummins 1994-1998
Fits: 5.9|6.7 Cummins 1989-2015
Fits: 5.9/6.7 Cummins 1989-2024
Fits: 3.9 Cummins 4BT 1989-1998
Fits: 3.9 Cummins 4BT 1989-1998