Cosworth YB Big Valve Ported Cylinder Head. This is a'V89' 4x4 Casting. Oversize Inlet Valves, Standard Exhaust Valves. 28mm Inlet and Exhaust Ports. Head thickness is 138.2mm. VALVES RECENTLY RESEATED BY CTM (NOV 2021) UNUSED SINCE. Perfect for big power racing turbo motor or N/A application. PLEASE CHECK MY OTHER LISTINGS FOR MORE NEW, NOS & USED FORD RS PARTS. The item "COSWORTH YB BIG VALVE PORTED CYLINDER HEAD VALVES ETC RESEATED RECENTLY BY CTM" is in sale since Thursday, December 2, 2021. This item is in the category "Vehicle Parts & Accessories\Car Parts & Accessories\Engines & Engine Parts\Cylinder Heads". The seller is "garagecosworth" and is located in Wolverhampton. This…