This Mishimoto Oil Sandwich Plate is a lightweight, high-flow sandwich plate that's built from 6061 aluminum. It's used to add an external cooler to your vehicles oil system. This Oil Sandwich Plate is designed specifically for M20 or 3/4"-16UNF Stainless Steel Center Bolts and has two 1/8" NPT plugged ports for optional sensors or gauges.Universal fitment allows oil temperature regulationOverall Size: 3.15" x 2.8" x 1.11" / Ports: M20 x 1.5" / Material: 6061 AluminumTwo 1/8" NPT ports (with plug) for sensors/oil feed/etc.Square O-ring designMishimoto Lifetime Warranty