MAHLE 50452CP.020 Original Plain Piston Ring Set +.020 Over AMC 150 / Chevy 153

The MAHLE Original 50452CP.020 is a plain cast iron piston ring set manufactured to OEM specifications for the AMC 150 (2.46L) four-cylinder and Chevrolet 153 inline-four engines. This set is sized at +.020" oversize, making it the correct choice for engines that have been bored 0.020" over standard during a rebuild.

MAHLE is the world's largest manufacturer of piston rings, and the Original line reflects decades of OE engineering expertise carried over directly to the aftermarket. This ring set features a shallow oil ring groove (CP-20) design and is constructed from cast iron for reliable sealing and long service life in these classic engine applications.

Key Features:

• +.020" Oversize — designed for engines bored 0.020" over standard during rebuild
• Plain cast iron construction — durable and proven for these engine families
• Ring thickness: 5/64" top compression, 5/64" second compression, 3/16" oil ring
• Shallow oil ring groove (CP-20) design for proper fitment
• High tensile strength and high yield strength with excellent hardness and low ring mass
• Provides stress resistance, minimal groove pound-out, and long service life
• Delivers good blow-by control, oil economy, and cylinder conformability with low friction
• Engineered to meet or exceed OEM specifications
• Formerly marketed under the Perfect Circle brand — trusted by professional engine builders for over 100 years

Whether completing a routine engine overhaul or a full rebuild, the MAHLE Original 50452CP.020 piston ring set provides the precision fit and reliable sealing performance that professional technicians and engine builders have counted on for generations.