2001-2004 GM Duramax 6.6L LB7 Piston & Rings

When a piston becomes worn or damaged on your 2001-2004 GM 6.6L Duramax LB7, it must immediately be replaced before you cause any more potential damage down the line. In general, if one piston is bad, there others are too, so it's best to replace all of your pistons with a complete set. Here at Alligator Performance we make purchasing pistons & rings easy with our premium selection of aftermarket upgrades that will deliver an improved ring seal each time you get behind the wheel. As a result, your engine will deliver more power and run much more efficiently without compromise. GM Duramax Fitments: 2001, 2002, 2003, 2004 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.