Schoenfeld SB Chevy Truck/Tractor Pull Headers - 1-7/8" Tube Diameter HSSML11SAS Throttle blade diameters are 1-7/16

Throttle blade diameters are 1-7/16 for the primarys and of 1-11/16 diameter for the secondarys

2017-2020 Ford F-450 Super Duty Crew Cab Pickup

AFCO improved geometry drag link relocates the inner tie rod end to shorten both tie rod assemblies

2017-2018 Chevrolet Silverado 3500 HD WT DIESEL Double Cab Pickup

Fits SU122B

Schoenfeld SB Chevy Truck/Tractor Pull Headers - 1-7/8" Tube Diameter HSSML11SAS Throttle blade diameters are 1-7/16Evacuation tubes exit inside of header. Started in 1974, Schoenfeld is known for custom fabricated headers for all forms of circle track racing. Schoenfeld Headers is the worlds largest manufacturer of circle track headers, but they specialize in a variety of high quality exhaust parts, including turn downs, extensions, tubing bends and elbows, race mufflers, insert mufflers, mandrel bends, exhaust reducers, header gaskets, and more. Product