ARP 4.185" Bore Piston Ring Compressor Tapered Billet Aluminum Black Anodize - Each R03J015XXL commonly used for exiting two

commonly used for exiting two 3-1/2" diameter exhaust pipes

Works with Edelbrock

1984-1995 Oldsmobile Cutlass Supreme

1976-1996 Ford Bronco

ARP 4.185" Bore Piston Ring Compressor Tapered Billet Aluminum Black Anodize - Each R03J015XXL commonly used for exiting twoARP'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