ECOGARD XT1308 Transmission Filter Kit for 2001-2012 Chevrolet Silverado 2500 HD, 2012 Silverado 3500 HD | 2003-2012 GMC Sierra 2500 HD, 2012 Sierra 3500 HD COMPATIBLE WITH 2001-2012 Chevrolet Silverado 2500 HD, 2012 Silverado 3500 HD, 2003-2012 GMC Sierra 2500 HD, 2012 Sierra 3500 HD. GREATER TRANSMISSION PROTECTION. High-efficiency media helps protect costly transmission components and maintain optimal performance. ECOGARD QUALITY. Manufactured to the highest quality standards for reliable performance and includes proper gasket for trouble-free installation. Replaces: FRAM FT1229 Purolator P1308 WIX 58966 OE 29537966.