Billet Alum Oil Filter By-Pass Adapter

The EARLS Billet Aluminum Oil Filter By-Pass Adapter (Model 1178ERL) is a precision-engineered component designed for serious engine builders and performance enthusiasts who demand reliability in their lubrication systems. This adapter serves as a critical link between your engine block and external oil filtration or cooling circuits, allowing you to maintain optimal oil pressure and flow rates even under extreme operating conditions.

Constructed from billet aluminum, this adapter is designed to deliver strength and excellent corrosion resistance. The precision billet manufacturing process ensures tight tolerances and consistent thread specifications, which helps to eliminate the risk of leaks or pressure loss that can compromise engine reliability. EARLS' reputation for quality means this adapter features proper porting geometry and internal passages designed to facilitate smooth oil flow while preventing cavitation.

This by-pass adapter is ideal for applications ranging from high-horsepower street engines to competition platforms. Its compact design—measuring just 4 x 1.6 x 6 inches and weighing only 0.53 lbs—allows for flexible installation in tight engine bay configurations without adding unnecessary mass. Engine builders looking to implement advanced oil management strategies will find this adapter to be a valuable addition to their setups.