Manley Valve - Exhaust, Valve-S/D 1.880,+.100 1984-pontiac-firebird-esi1382254 00" CNC mandrel bent tubing

00" CNC mandrel bent tubing for maximum exhaust flow and high flow catalytic converters

Supplied is (8) 12 mm 10

Aluminum 3rd member will NOT work

Harness the power of your Ford Mustang with UMI Performance's adjustable rear upper control arm

Manley Valve - Exhaust, Valve-S/D 1.880,+.100 1984-pontiac-firebird-esi1382254 00" CNC mandrel bent tubingManley 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