By Offenhauser. These rugged, cast aluminum Offy valve covers give classic good looks to lots of Hot Rod power plants! Fits 1958-1966 Chevrolet 348 or 409 "W-block" engines in both passenger cars and trucks.
The sides, ends and fins have all received the "polisher's touch".
NOTE: The mounting holes of all Offenhauser valve covers are drilled standard and to factory specifications. Sometimes variations in the heads may require a slight enlarging of the holes.