The PPE Race Fuel Valve for your Duramax or Cummins replaces the stock or a shimmed pressure relief valve. This valve helps maintain fuel rail pressure during full throttle driving by completely blocking the pressure relief port. Doing so will eliminate low fuel rail pressure symptoms and DTC codes P1093 or P0087.
*DOES NOT INCLUDE O-RING
*RECOMMEND NEW O-RING: PPE113073001