ARP Special Purpose Washers # 200-8554 Cylinder Head Primary Bore 1

Primary Bore 1

Chevy Small Block Gen I

It's a known factproper sealing is vital to create maximum horsepower within the engine

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ARP Special Purpose Washers # 200-8554 Cylinder Head Primary Bore 1ARP Special Purpose Washers # 200 8554 Washers, Chromoly, Black Oxide, . 375 in. I. D., . 625 in. O. D., . 120 in. Thick, Set of 10 Washer Outside Diameter (in.): 0. 63 in. Washer Outside Diameter (mm): 15. 875 mm Washer Inside Diameter (in.): 0. 38 in. Washer Inside Diameter (mm): 9. 525 mm Washer Thickness (in.): 0. 120 in. Washer Thickness (mm): 3. 048 mm Washer Material: Chromoly Washer Finish: Black oxide Inside Diameter Chamfer: No Hardened: Yes