Hydraulic Valve Lifter——Hydraulic adjustment is adopted to automatically adjust the appropriate valve clearance state to prevent valve mechanism wear and noise.
Fitment——Compatible with Chevy GMC Buick Cadillac,fit for 4.3L 5.3L 6.0L 6.2L Engines with AFM 2007-2021.
Models——Compatible With Buick Allure Lacrosse; Compatible With Cadillac Escalade; Compatible With Pontiac G8; Compatible With Chevrolet Avalanche Caprice Express Impala Silverado Tahoe; Compatible With GMC Savana Sierra Yukon.
Package Includes——8x AFM Lifters, 8x Roller Lifters. No instructions included. Please fill the valve lifters with No. 68 hydraulic oil(pre-added in the lifters) when installing.