Clevite 40668CP.040 Plasma-Moly Piston Ring Set Bore - 3.790 6-Cylinder

The Clevite 40668CP.040 Premium Piston Ring Set delivers professional-grade performance and reliability for 6-cylinder engines with a 3.790 inch bore diameter. Manufactured by MAHLE Original under the trusted Clevite brand, this ring set features advanced plasma-moly coating technology for superior wear resistance and extended service life.

Key Features:

• 3.790 inch (96.266mm) bore diameter designed for .040" oversized applications
• Premium plasma-moly coating for reduced friction and enhanced durability
• Pre-lapped rings seat immediately, virtually eliminating break-in time
• Ring dimensions: 5/64 inch top compression ring, 5/64 inch second ring, 3/16 inch oil ring
• Barrel-faced compression rings with CNC-controlled gap chamfer optimize compression and reduce blow-by
• Reverse twist intermediate rings provide better groove side sealing and enhanced contact
• CP-20 oil ring assemblies feature a 20 degree ear angle for superior cylinder wall sealing
• Complete 6-cylinder set with optimized ring tension for reduced friction

MAHLE Original piston ring sets are engineered to installer-friendly specifications with materials and coatings optimized for each application. The compression rings feature a barrel-faced contact area for more efficient compression, while the special chemical polish on the oil ring expander offers enhanced oil drain back for improved engine protection.