SKU: ARP900-3100
UPC: 672036018641
MPN: 900-3100
The 4.310 Tapered Ring Compressor is a precision engine assembly tool designed for professional mechanics and serious DIY engine builders working with modern gasoline engines. This tool compresses piston rings during top-end teardown and rebuild operations, allowing you to safely remove and install pistons without damaging the delicate rings or cylinder walls.
Built by ARP, an industry leader in fastener and engine tool precision, the 4.310 Tapered Ring Compressor features a tapered band design that applies consistent, even pressure across all compression rings as you push the piston into the cylinder bore. The tapered profile gradually tightens as you slide the piston upward, reducing the risk of ring hang-ups or binding that can occur with fixed-diameter compressors.
Lightweight construction at 0.53 lbs keeps it easy to maneuver during overhead work, while the compact 5.75 x 2.25 x 9.7 inch footprint fits easily into your tool chest or mobile service cart. This compressor is essential for anyone tackling serious engine work where proper ring installation prevents blowby, oil control issues, and premature wear.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
