Allstar Performance Positive Stop Valve Stem Seal - 3/8 in Valve Stem - 0.620 in OD - 0.531 in Guide OD - PTFE - Set of 100 AMH-2.5 Every Dougs header comes with

Every Dougs header comes with all the necessary mounting hardware

Sweet Quick Change Rear Mount

the RPM Air-Gap 460 incorporates the same race-winning design that's been used on our Victor Series competition intakes for decades

outside diameter

Fits left or right side

Allstar Performance Positive Stop Valve Stem Seal - 3/8 in Valve Stem - 0.620 in OD - 0.531 in Guide OD - PTFE - Set of 100 AMH-2.5 Every Dougs header comes withSeals have spring loaded wipers for maximum oil control. Machining is required for most installations. Set of 100. Specialty items for the Shop, Trailer and Track. The Allstar Performance brand offers thousands of hard to find, specialty items that cover many segments in the performance aftermarket. For over 30 years, customers worldwide have come to rely on the quality, affordable and practical items available from Allstar Performance. Product