Plumb all four corners of your heads with Trick Flow® GM LS engine steam line plumbing kits. It's an easy upgrade from factory steam tubes with Trick Flow®. Your GM LS engine 4-corner plumbing kits include: * Two 2 ft. 1/4 in. black rubber hoses * Twelve 9/16 in. hose clamps * Four 4 AN 90 degree fittings * Stainless steel tee barb fitting * Stainless steel cross barb fitting

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