PRW (4034637): Fabricated Aluminum Valve Cover Modified for GM LS Racing Rockers

PQ Series fabricated aluminum valve covers from PRW feature machined cutout rails for aftermarket racing rocker arms—eliminating the need for valve cover clearance and machine work; in addition, with triple the height of stock valve covers, there is no need for valve cover risers. The pair of covers in 4034637 is perfect for street performance junkies, racers, and machining enthusiasts who want to reduce weight without sacrificing performance.

Crafted from 6061-T6 aluminum alloy, these covers have successfully endured rigorous individual pressure testing and are built to withstand harsh racing elements. Thicker rails and better materials ensure rugged longevity.


  • For 1998+ GM LS Series.
  • Machined cutout for aftermarket-style racing rocker arms.
  • Tested under rigorous pressure.
  • Constructed from 6060-T6 aluminum alloy.
  • Billet rails strengthen the valve cover for added durability.
  • Fasteners included.

PRW (4034637): Fabricated Aluminum Valve Cover Modified for GM LS Racing Rockers

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Though this is not a paid review, this content has been produced by The AAM Group™ in support of manufacturers with whom it has a business relationship.

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