This effective modification has been designed to assist the EJ Engine with it’s oil supply and is now regarded as a must have modification with any Subaru EJ engine build.
Each pump is carefully checked and modified to incorporate a different pressure relief valve ensuring greater reliability and peace of mind to your Subaru EJ engine.
Each relief valve is EN40B Nitride hardened and machined to the correct size
Then the relief valve receives a 14 hour super finish polishing treatment to make them as smooth as possible.
Each relief valve has a finishing surface of 0.03 RA
Each pump is modified here at the Fuji headquarters and primed with oil just before dispatch
10mm Rotor – Standard Fitment for many Subaru models
11mm Rotor – Suited for 90% of modified applications – increased volume over the 10mm to help with oil pressure in the low down RPM range
12mm Rotor – Only recommended for cars running larger sumps, external oil coolers, shimming of the relief valve may be needed depending on application.
Suitable for the following models:
If you are unsure of fitment or application then please contact us with your vehicles chassis number.
PLEASE NOTE: ALL PARTS ARE SUBJECT TO AVAILABILITY unless stock level indicated on product page.
