843844 Volvo.Penta Tube

Pack of 8 Active Fuel Management & Roller Lifter, Replacement for 2007-2012 Chevrolet GMC Cadillac Buick V8 Engine, Part Number 12619820 17122490 12645725 17109057 12619820 (4+4 Valve Lifters)
(Specifics) This is a 4+4 Pieces Set of Brand New Aftermarket Engine Valve Roller Lifters, replacing the hydraulic tappet that does not work or does not work smoothly. || (Note) If you found lifter faults after installation, they might be caused by oil pressure issues, or control issues. Any time an engine has failed AFM lifters the lifter guides must be replaced, the lifter bores must be measured, and the VLOM must also be tested for proper operation, or replaced. || (Installation Guide) The AFM lifter bores in these engines have a spec of .843-.844, and the deactivation lifters require 22 PSI of pressure to release the locking pins. It is common to find the VLOM oil filter plugged and needing replacement on high mileage engines with miss-fire fault codes. || (Compatibility) Please see Description for Detailed Information. || (Interchangeable Part #) Compatible with GM # 12569256, 12571595, 12619820, 12632143, 12639516, 12645725, 17122490, 12499225, 12576400, 12648846, 17109057, 17120090, 17120735, 17121905, 25341990, 5233745, 5234660