Mahle OE Ford 5.4L DOHC V8 015120WR-020 w/ PCR Piston With Rings Set (Set of 8)

The Mahle OE 5.4L DOHC V8 piston set is built with compensated ring grooves, a design choice that helps ensure proper ring loading and effective oil control. This is crucial for keeping oil where it belongs and preventing it from entering the combustion chamber, which can lead to issues like blue smoke and fouled spark plugs. These pistons also feature an expansion-controlled design, meaning they are made to run with smaller fitting clearances. This reduces engine noise, wear, and emissions while further improving oil management.

Mahle is one of the largest original equipment piston manufacturers globally, and this set reflects that OE quality. For your convenience, these pistons come ready for installation with the piston rings already mounted, and the necessary pin and clips are included. This saves you time and ensures you have all the correct components for a smooth engine rebuild on your 1999-2004 Lincoln Navigator, 2002 Lincoln Blackwood, or 2005-2006 Ford GT.