This listing is for (8) Standard bore 3.780" dish top pistons and matching rings compatible with 1999-2003 Chevy LS 5.3L Trucks VIn Code "T" engines. Pistons feature Hypereutectic recessed head .068" deep with coated skirts. PIN dia. .9451" (TECH NOTE: please confirm pin diameter, some 2003 & after models used smaller pin dia.). Compression Height: 1.328". Replaces OEM piston # 88894397.