High quality die-cast aluminum thermostatic sandwich adapter with 1/2" NPT ports and an O-ring diameter of 3 1/2", this adapter provides external oil lines to allow the addition of an engine oil cooler to most 1963-2007 GM V-8 engines. It installs between the stock engine oil filter landing and the oil filter. Stock filter is retained.Specifications: Sandwich Adapter type: C
Adapter Thread size: 13/16"-16
Adapter O-ring size: 3-1/2"
Adapter Thickness: 2-1/4"
Adapter Inlet size: 1/2" NPTFeatures:
Provides external oil lines for oil coolers without relocating the factory oil filter
Cast form high quality aluminum
Maintain factory equivalent oil filter
GM Type C Sandwich Adapter with 13/16"-16 thread size, fits most applications
GM applications with 3-1/2" O-ring/filter diameter
Includes sandwich adapter, sleeve nut & O-ringProduct Description: Oil Filter Adapter, Thermostatic, Sandwich, 13/16-16 in Center Thread, 1/2 in NPT Female Inlet/Outlet, Aluminum, Engine Oil CoolerPit Stop USA offers Derale GM Thermostatic Sandwich Adapter with 1/2" NPT Ports 25720 at low everyday prices. Be sure to check out all our products from Derale Performance including Derale Performance Oil Filter Adapters and Components.