Earls GM LS Oil Cooler Block Off Plate with 1/8 NPT Port - LS0020ERL fuel-line The base is made of

The base is made of the same glass-filled material as the factory to ensure durability

Whether using on the street or on the strip

7L V8 1987 - 1991 GMC R1500 Suburban 350/5

(3) 3/16" barb fittings

Earls GM LS Oil Cooler Block Off Plate with 1/8 NPT Port - LS0020ERL fuel-line The base is made ofOverview: Earl's GM LS Oil Cooler Block Off is a billet cover that has an extra 1 8" NPT port that can be used for an oil pressure gauge or a turbo oil supply port. The 1 8" port is located on the top for extra header clearance. Includes billet cover, O ring seal (no gasket required), and mounting hardware. Black anodized finish. Made in the USA. Features: Billet Aluminum w Black Anodized Finish O Ring Seal Doesnt Require a Gasket 1 8 NPT Port That