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The Stainless Works collector filler diamond is a 2-3/8" diameter CNC laser-cut insert made from 304 stainless steel for corrosion resistance. Designed for 4:1 headers, this filler squares primary tubes and helps eliminate leakage inside the collector joint. Precision-cut for accurate fitment and alignment, these filler diamonds are manufactured in the USA to support reliable header fabrication.
Stainless Works 2.375in Dia Collector Diamond
