Pontiac 301 455 V8 Proform Freeze Plug / Welch Plug Kit # 66560 Rate_40 and various serpentine pulleys are

and various serpentine pulleys are sold separately

and advanced polymer coatings to maintain a proper contact pressure between the cylinder head and block

ARP High Performance series head bolt kits are tough

29mm Bar Diameter

Pontiac 301 455 V8 Proform Freeze Plug / Welch Plug Kit # 66560 Rate_40 and various serpentine pulleys areBrass Freeze Plug Kit Pontiac 301 455 V8 Engines 1963 1981 Features: for Pontiac V8 Engines All Sizes Needed Included PROFORM Parts Brand Product Sold as One Kit Avoid corrosion in your engine and replace your rusty freeze plugs with PROFORM's durable brass freeze plug kits. All necessary plugs are included for one complete engine block. Made in USA.