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The Peterson end rail spacer .375 kit corrects clearance between the intake manifold and lifter valley end rail for engines with raised-port heads. Each kit contains the spacer for the water pump and distributor end rails plus four 3/16" roll pins to fasten the parts to the block. The .375-inch thickness provides a specific offset where needed for proper manifold fitment.
Peterson Fluid Systems End Rail Spacer .375
