Mahle 42146CP Engine Piston Ring Set

Mahle 42146CP Piston Ring Set

Mahle 42146CP is a premium engine piston ring set built for precise sealing, controlled oil use, and reduced friction. It is engineered for shallow groove applications and uses advanced ring materials and face coatings to support consistent cylinder pressure and long service life.

• Premium-grade piston ring set for engine rebuild and repair work
• 3.7598 in bore diameter
• Top ring material: carbon steel with 0.0468 in axial height
• Second ring material: cast iron with 0.0586 in axial height
• Oil ring assembly material: stainless steel with 0.0984 in axial height
• Plasma-Moly ring face coating for improved wear resistance
• Standard oversize for OE-style replacement applications
• Shallow groove design

Engine Sealing and Wear Control

This Mahle piston ring set is built around OE-driven engineering priorities: lower friction, reduced ring mass, and controlled engine oil consumption. The carbon steel top ring, cast iron second ring, and stainless steel oil ring assembly are selected to support sealing performance under everyday driving and rebuild conditions. Mahle 42146CP is a direct-fit choice for Ford Mustang, Ford Transit, Ford F-150, Lincoln MKZ, and Mazda CX-9 applications listed below.

Vehicle Fitment

• Fits 2011-2017 Ford Mustang, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2015-2017 Ford Transit, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2015-2017 Ford Transit-150, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2015-2017 Ford Transit-250, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2015-2017 Ford Transit-350, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2015-2017 Ford Transit-350 HD, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2017 Lincoln Continental, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2010-2017 Lincoln MKT, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2011-2017 Lincoln MKX, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2009-2016 Lincoln MKS, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2013-2016 Lincoln MKZ, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2011-2014 Ford Edge, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2011-2014 Ford F-150, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2009-2011 Mazda 6, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove
• Fits 2008-2011 Mazda CX-9, N/A; Size Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Cast Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Chrome; Axial Height UCR-1.2mm; LCR-1.5mm; OCR-2.5mm; Ring Type UCR:RF-13PF; LCR:THM-10; OCR: CP-20; Shallow Groove

Common Repair Uses

• Restoring cylinder sealing during an engine rebuild
• Addressing oil consumption caused by worn rings
• Improving compression loss from ring wear or fatigue
• Replacing damaged or heat-worn piston rings
• Supporting smoother operation in high-mileage Ford, Lincoln, and Mazda engines

Installation Notes and Tips

Verify bore diameter, ring thickness, and groove style before installation. This set is specified for a 3.7598 in bore with shallow groove dimensions, so matching the piston and cylinder specification is critical. Clean ring lands thoroughly, check end gaps to engine specifications, and confirm ring orientation during assembly. Mahle 42146CP is commonly searched as a Ford Mustang piston ring set, Ford Transit piston ring set, and Ford F-150 piston ring set for the listed applications.

Quality Assurance

Mahle piston rings are developed to meet OE-driven performance requirements, with attention to friction reduction, ring mass control, oil consumption management, and service life. Part number 42146CP reflects Mahle’s premium engine component standards for rebuild-focused applications.