Manley Severe Duty Exhaust Valve - 1.600 in Head - 0.342 in Valve Stem - 5.036 in Long - Small Block Chevy - Set of 8 11823-8 13100905 New Size 7/16" for heavy

New Size 7/16" for heavy duty and allows panels to be easily removed with fastener tool

NOTE: Wrapping of the catalytic converter is not recommended

12-Bolt Flange / Gasket

Kits include all the major components of a power steering system: power steering pump fitted with a lightweight aluminum pulley

Manley Severe Duty Exhaust Valve - 1.600 in Head - 0.342 in Valve Stem - 5.036 in Long - Small Block Chevy - Set of 8 11823-8 13100905 New Size 7/16" for heavySEVERE DUTY SERIES Superior Stainless for High Temperature Gasoline Engines Exhaust Material XH 428 with Double the Ultimate Tensile Strength ( at 1500 F ) over the competition Intake Material NK 844 with 1000 Times Better Fatigue Strength than competitors offerings Manley Performance high performance and racing engine parts have been powering winners since 1966. Since our inception in March 1966, Manley Performance Products has been at the forefront