Htostar Racing (8+8) AFM DOD Hydraulic Valve Lifters Roller Lifters Compatible with Chevy GMC Cadillac Buick 5.3L 6.0L 2007-2021 Active Fuel Management Roller Lifter replace 12619820 17122490 12645725

It’s Avery advanced repair job, costing apt of hours to accomplishThe quality of these lifters is so bad!Truck runs worse than when it came to the shop!!!Numbers 1and 7 intake has collapsed

Do not buy these. Should be a negative rating. Should have believed the other reviews. Followed instructions and after installation there was a loud tapping immediately. Took everything apart again and half of them were bad. Someone said they got 100 miles on these and they were lucky. For me they lasted about 5 miles. Out the money and had to buy all different parts.

The product at first glance looks and feels solid, but once you install all 8 AFM lifters that is when the problems begin. The spring and retainers separated 6 out of the 8 lifters 40 miles after install. After reading the reviews and with my own experience believe this product is needs to be removed from this site and others like it until the problem can be fixed. False advertisement and product does not do what intended to do.

Cam follower collapsed on one cylinder, will have to redo complete job again and waste money on gaskets and labor. Do not recommend, getting original from now on

Don't buy terrible product two of them collapse after three days an on replacement 4 came apart