ARP 4.165" Tapered Billet Aluminum Ring Compressor HTA23003 By installing either the side

By installing either the side forced air or top forced air kit

All Bolt In or Wrap Around

From performance street machines to professional drag racers

8 L to Chevy V8

Aluminum Rods

ARP 4.165" Tapered Billet Aluminum Ring Compressor HTA23003 By installing either the sideARP's ring compressors are CNC machined from 6061 T6 billet tube material and feature a true radius for each different bore diameter. What's more, they are relieved for wire O rings on bottom. Type 3 anodizing is used for long life, and the bore size is prominently engraved in 3 4 in high numbers for easy identification. Standard stocking sizes from 3. 552 in to 4. 750 in (SAE) and 75mm to 95. 5mm (metric). The true radius design is far superior to