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Mahle S42221 Standard Piston Ring Set – 5.9 Cummins
Restore proper compression and oil control in your 5.9L Cummins with the Mahle S42221 standard-bore piston ring set. This OE-quality ring pack is engineered as a direct replacement for 1989–2002 Dodge Ram 2500/3500 trucks equipped with both 12-valve and 24-valve 5.9 Cummins engines (standard 4.016" / 102 mm bore).
Each set includes the complete ring package for one piston:
- Top compression ring – ductile iron with ceramic chrome facing for excellent wear resistance and sealing under high cylinder pressures
- Second compression ring – cast iron
- Oil control ring – cast iron 3-piece design
These rings are built to original equipment geometry and materials, delivering reliable sealing, reduced oil consumption, and long service life in work-truck, towing, and everyday applications.
Important notes:
- Sold per cylinder
- Order quantity of 6 for a complete engine set
- Always verify bore size and hone finish; file-fit end gaps to manufacturer specifications as needed
The Mahle S42221 is a proven, stock-replacement solution trusted by rebuilders who want factory-level performance and durability without modification.
Mahle S42221 Standard Piston Ring Set – 5.9 Cummins
Restore proper compression and oil control in your 5.9L Cummins with the Mahle S42221 standard-bore piston ring set. This OE-quality ring pack is engineered as a direct replacement for 1989–2002 Dodge Ram 2500/3500 trucks equipped with both 12-valve and 24-valve 5.9 Cummins engines (standard 4.016" / 102 mm bore).
Each set includes the complete ring package for one piston:
Top compression ring – ductile iron with ceramic chrome facing for excellent wear resistance and sealing under high cylinder pressures
Second compression ring – cast iron
Oil control ring – cast iron 3-piece design
These rings are built to original equipment geometry and materials, delivering reliable sealing, reduced oil consumption, and long service life in work-truck, towing, and everyday applications.
Important notes:
Sold per cylinder
Order quantity of 6 for a complete engine set
Always verify bore size and hone finish; file-fit end gaps to manufacturer specifications as needed
The Mahle S42221 is a proven, stock-replacement solution trusted[...]
Mahle S42221 Standard Piston Ring Set – 5.9 Cummins
Restore proper compression and oil control in your 5.9L Cummins with the Mahle S42221 standard-bore piston ring set. This OE-quality ring pack is engineered as a direct replacement for 1989–2002 Dodge Ram 2500/3500 trucks equipped with both 12-valve and 24-valve 5.9 Cummins engines (standard 4.016" / 102 mm bore).
Each set includes the complete ring package for one piston:
- Top compression ring – ductile iron with ceramic chrome facing for excellent wear resistance and sealing under high cylinder pressures
- Second compression ring – cast iron
- Oil control ring – cast iron 3-piece design
These rings are built to original equipment geometry and materials, delivering reliable sealing, reduced oil consumption, and long service life in work-truck, towing, and everyday applications.
Important notes:
- Sold per cylinder
- Order quantity of 6 for a complete engine set
- Always verify bore size and hone finish; file-fit end gaps to manufacturer specifications as needed
The Mahle S42221 is a proven, stock-replacement solution trusted by rebuilders who want factory-level performance and durability without modification.
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