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The Supertech black-nitrided exhaust valve for LS1 and small-block Chevy applications is a single replacement sized 1.570 x .3134 x 4.937 inches. Offered individually, this exhaust valve provides the specific dimension set for LS1 heads and like cylinders. Use it when replacing worn exhaust valves to maintain correct seat and guide fit during a head overhaul.
Supertech LS1 SB Chevy 1.570 x.3134x 4.937in Blk Nitride Exhaust Valve - Single (Drop Ship Only)
