Genuine GM high performance hydraulic roller lifters are an upgrade for factory lifters found in LS V8 engines. With refined durability and performance, they ensure valve-train stability in the most demanding conditions. These are a performance replacement for stock hydraulic roller lifters, are preloaded and have to be installed between 3/8 and 3/4 turn (vs. 1/2 to 1.5 turns on stock lifters).
These hydraulic roller lifters suit HSV ClubSports and similar platforms fitted with LS1, LS2, LS3 and LS7 V8 engines.