Mahle OE Rings GM 4.4L LC3 Northstar Engine Moly Ring Set for 2006-2009 Cadillac STS and XLR

MAHLE(R) piston rings are the most technically advanced piston rings in the industry. Driven by OE requirements; reducing friction and ring mass while minimizing engine oil consumption, and providing longer service life. MAHLE piston rings lead the industry for the latest piston ring technology.