Manley Severe Duty Exhaust Valve - 1.600 in Head - 0.342 in Valve Stem - 5.036 in Long - Small Block Chevy - Set of 8 11539-8 EXT-ANT-KIT-UHF-ABH 9LSU sensor and can utilize

9LSU sensor and can utilize both the factory calibration resistor and free-air calibration methods**

billet aluminum adapter block

Sensor data must be present on the OBD II data stream to function

The inner diameter of the throw out bearing is 1

Manley Severe Duty Exhaust Valve - 1.600 in Head - 0.342 in Valve Stem - 5.036 in Long - Small Block Chevy - Set of 8 11539-8 EXT-ANT-KIT-UHF-ABH 9LSU sensor and can utilizeSEVERE 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