Manley Chevrolet Big Block 1.940in Head Dia. / 6.400in OAL / 0.3415in Stem / Exhaust Valve - Single Stage 1 15306 is produced using CNC

15306 is produced using CNC precision robotic manufacturing techniques and is backed by MagnaFlow's 1-year limited finish warranty and limited lifetime construction warranty

6L 2007-2015 Nissan TITAN with our signature resonant

Year Make Model Submodel 1963-1966 Alfa Romeo Giulia Speciale 1963-1967 Alfa Romeo Giulia Spider 1967 Alfa Romeo Giulia Super 1963-1967 Alfa Romeo Giulia TI 1963-1965 Alfa Romeo Giulia TI Super 1964-1966 Alfa Romeo Giulia Veloce 1963-1964

5mm Radial Groove Steel 7 Deg Valve Locks - Set of 16

high-temperature ceramic black finish on T-304 stainless steel

Manley Chevrolet Big Block 1.940in Head Dia. / 6.400in OAL / 0.3415in Stem / Exhaust Valve - Single Stage 1 15306 is produced using CNCManley Severe Duty Valves deliver the ultimate in strength, reliability, and high performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH 428 for exhaust and NK 844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400F, Manley exhaust valves endured 100 million cycles, while competitors failed after just