LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2015 >> WRX STI >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (STI) >> Pressure Regulator & Damper Assembly >> Assembly
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Pressure Regulator & Damper Assembly: Assembly

  1. Install the pressure regulator to the fuel holder assembly, and install the fuel pipe gasket and pulsation damper to the fuel holder assembly.
    NOTE:
    • Use new O-rings and fuel pipe gaskets.
    • Apply a thin coat of engine oil to the pressure regulator installation hole of fuel holder assembly.

    Tightening torque: 

    T1: 6.4 N.m (0.7 kgf-m, 4.7 ft-lb) 

    T2: 21.6 N.m (2.2 kgf-m, 15.9 ft-lb) 

    Fig 1: Identifying Pressure Regulator And Damper Assembly Components With Torque Specifications
    G10264973Courtesy of SUBARU OF AMERICA, INC.
  2. Install the fuel pipe protector to the pressure regulator and damper assembly.
Fig 2: Identifying Fuel Pipe Protector And Pressure Regulator
G10264974Courtesy of SUBARU OF AMERICA, INC.