Small Block Ford 1/2 Head Boltkit 351 Windsor 12 Point Sbf Aeroflow - Af 37-2117 Fasteners - Thickness from Mounting surface

- Thickness from Mounting surface to Flat Section of Motor: 71

PFE1000-04B

PSI Relief Valve: 11-17

Part Number: AF370-04SS

High Quality Aluminum

Small Block Ford 1/2 Head Boltkit 351 Windsor 12 Point Sbf Aeroflow - Af 37-2117 Fasteners - Thickness from Mounting surfacePart Number: AF37 2117 Aeroflow performance head bolts greatly improve your cylinder head to block sealingcompatibilities. This is important in engines with highpower adders such as turbochargers, superchargers or nitrous. They can even be agreat addition to a mildly modified build as insurance against failure. these head bolts are manufactured from aircraft quality 8740 high tensile strength chromolysteel and cold forged to ensure molecular integrity