Schoenfeld Slip-On 4 Tube Collector - 1-3/4" Tube Diameter - 3-1/2" Collector Diameter Radiator Overflow Canister rocker stud diameter: 3/8"

rocker stud diameter: 3/8"

630 in OD Guide

They are zinc plated for corrosion resistance

Requires Standard Pin And Clip

Schoenfeld Slip-On 4 Tube Collector - 1-3/4" Tube Diameter - 3-1/2" Collector Diameter Radiator Overflow Canister rocker stud diameter: 3/8"Schoenfeld Slip On Collectors deliver maximum performance at a great price. 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