Earls Sandwich Filter Adapter

Sandwich Filter Adapter Center Post Size 20 x 1.5mm Port Sizes 3/8" NPT, Black Anodized.


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These units allow the adaptation of an oil cooler to any engine while maintaining the stock oil filter location. Center Stud has 1-1/8" Hex.


  • Oil Cooler Adaptation
  • 3/8" NPT Female Pipe Thread
  • Add Approx. 1" To Filter Length
  • Maintains Stock Filter Location
  • Adapts To Any Engine
  • Black Anodized
  • Center Stud has 1-1/8" Hex


Center Stud Diameter20MM X 1.5
Emission Code5
FinishAnodized Black
MaterialBillet Aluminum
O-Ring Cross Section.210 Inches
O-Ring Diameter2-1/2 Inches
Port Size3/8 NPT FEMALE
Product TypeOil Cooler
Part Number517ERL

Service Parts


This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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