OEM Cross GM 12499225 Hydraulic Roller Lifters LS1, LS2, LS3, LS7 - (4.8L, 5.3L, 5.7L, 6.0L, 6.2L) These ARE OEM 100% U.S.A. MADE Lifters! Beware of non GM Lifters - Most Aftermarket lifters are Assembled in the USA with CHINA made components! MY customers demand GM lifters, they have tried others and ended with labor claims! Features include: OEM GM# 12499225 Large Base Design Durable in High Performance Applications 16 Piece set Note: These are not designed to replace DOD/AFM lifters unless customer is looking to remove DOD/AFM from the engine. Applications: LS1, LS2, LS3, LS6, LS7, LS9 LSX Engines 1999-2002 Camaro & Firebird 2010-2013 Camaro 1999-2013 Corvette 2004-2006 Pontiac GTO 2004-2007 Cadillac CTS-V 2008-2009 Pontiac G8 2000-2013 Tahoe, Yukon, Escalade 2003-2009 H2 Hummer 2001-2013 Chevrolet Avlanche 1999-2013 Silverado & Sierra (4.8L, 5.3L, 6.0L)