Allstar Performance Swedge Tube Black - 1/2" Steel - 3/4" O.D. x 20" Long H76903F All valve covers come with

All valve covers come with rubber grommets for PCV ventilation

20 AN Male

5 in OD Springs

Extruded Aluminum

1979-1990 GMC C2500

Allstar Performance Swedge Tube Black - 1/2" Steel - 3/4" O.D. x 20" Long H76903F All valve covers come withSwaged D. O. M. tubes are black zinc coated. 3 4" O. D. tubes are . 065" thick. 7 8" O. D. tubes are . 083" thick. 1" O. D. tubes are . 095" thick. 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