STAINLESS STEEL Standard Hexagon Head Bolts To Fix The Inlet Manifold To Your Chevy V8 Engine. CV8-In1 Chevrolet V8 Engine Inlet Manifold. SB Engines 165 - 400 (1955 to 1995). The Fixings Are All 3/8"-16 (UNC) As Standard To Chevy V8 Intakes.
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