Derale 25733 Thermostatic Sandwich Adapter 3/8 NPT Ports 18x1.5mm Filter Thread

Thermostatic Sandwich Adapter with 3/8" NPT Ports and 18x1.5mm Filter Thread High quality die-cast aluminum thermostatic sandwich adapter with 3/8" NPT ports and an O-ring diameter of 2 3/4", this adapter provides external oil lines to allow the addition of an engine oil cooler. It installs between the stock engine oil filter landing and the oil filter. Stock filter is retained. Designed to be used on engines with a 18mm x 1.5 filter thread. Thermostatic Sandwich Adapter with 3/8" NPT Ports and 18x1.5mm Filter Thread