Mahle OE Rings 3.9L Was Mahle 01521N020 Chrome Ring Set for 2000-2006 Ford Thunderbird and Lincoln LS

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.