RHS Pro Action GM LS Cathedral Port Cylinder Head; Bare (10-13 4.8L Silverado 1500; 99-13 5.3L Silverado 1500; 03-13 6.0L Silverado 1500)

Precise Fitment. Each Silverado 1500 head is precisely engineered to fit the original LS block. Every step of the process is carefully controlled to ensure a tight and leak-free fitment. No more searching around the junkyard in hopes of getting a good head for your Silverado 1500.

High-Quality Construction. The Silverado 1500 Pro Action GM LS Cathedral Port Cylinder Head is manufactured with the best possible materials to ensure a long lifespan. For example, bronze/manganese valve guides are added for an extended lifespan.

Unique Spark Plug Pocket Design. OEM-style tapered and flat style spark plugs can be used thanks to the unique dual spark plug pocket design of the Pro Action GM LS Cathedral Port Cylinder Head. Boosting your performance can be as simple as swapping out the old spark plugs.

Easily Installation. The Silverado 1500 Pro Action GM LS Cathedral Port Cylinder Head comes ready to go straight out of the box. Clean Cast Technology ensures no flaws are present, making installation a breeze.

Stock And High-Performance Application. No matter if you are planning on keeping your Silverado 1500 stock or prepping it for high-end horsepower later down the road, RHS Pro Action GM LS Cathedral Port Cylinder Heads are the way to go. They accept stock components as well as COMP cams, stiffer springs, tougher valves, and other power-adding goodies designed to make your truck fly down the road.

Application. The Silverado 1500 Pro Action GM LS Cathedral Port Cylinder Head is designed to fit the 2010-2013 4.8L Silverado 1500, 99-13 5.3L Silverado 1500, and the 03-13 6.0L Silverado 1500.

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