Auto Barn
Est. 1957
ARP

ARP 3.870 Ring Compressor

$67.97

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Worn-out piston rings cause compression loss. This ARP 899-8700 ring compressor is a direct fix for 3.870 inch bore engines.

Key Features

  • Compresses piston rings — makes installing pistons into cylinders easier and safer.
  • For 3.870 inch bore engines — fits pistons designed for this specific cylinder size.
  • Durable steel construction — built to last through multiple engine builds.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Secure CheckoutFast Shipping631-982-0042

ARP 3.870 Ring Compressor

$67.97