Under full throttle or hard driving conditions, the stock pressure relief valve can allow fuel rail pressure to drop which can cause a dangerous lean condition as well as trigger DTC codes P0087 and P1011.The Sinister Diesel Fuel Rail Race Plug replaces the stock or shimmed pressure relief valve in the fuel rail with a solid plug that will not fail or slowly leak. Using this Race Plug in place of the stock pressure relief valve will help your maintain fuel rail pressure full throttle driving or at the track, getting you the ground-pounding diesel power you need when you put the pedal down., Note: This item is not for sale in the State of California, Features:Solid Stainless Steel construction, Impervious to mechanical failure, New O-RingIncludes:(1) Sinister Diesel Fuel Race Plug, (1) O-ring,
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