ARP Special Purpose Washers .313 in. I.D., .625 in. O.D., Set of 10 # 400-8550 Rate_15 Edelbrock part #7581 RPM Air-Gap

Edelbrock part #7581 RPM Air-Gap 351W intake manifold is designed for street and high performance 351-427 c

Light weight sturdy 18 gauge tubing

and 700R4 provisions Accepts many common 5 1/8 in

Chev 283 327 350 383 400 ARP Chromoly Header Bolt Kit # 100-1101

ARP Special Purpose Washers .313 in. I.D., .625 in. O.D., Set of 10 # 400-8550 Rate_15 Edelbrock part #7581 RPM Air-GapARP Special Purpose Washers . 313 in. I. D., . 625 in. O. D., Set of 10 # 400 8550 Washers, Flat, Stainless Steel, Polished, . 313 in. I. D., . 625 in. O. D., Set of 10 Washer Outside Diameter (in): 0. 625 in. Washer Outside Diameter (mm): 15. 875 mm Washer Inside Diameter (in): 0. 313 in. Washer Inside Diameter (mm): 7. 950 mm Washer Thickness (in): 0. 120 in. Washer Thickness (mm): 3. 048 mm Washer Material: Stainless steel Washer Finish: Polished