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Deviant Rail Plug for 2004.5-10 6.6L Duramax

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Deviant Race Parts Fuel Rail Plug for the 2004.5-10 GM 6.6L Duramax - LLY/LBZ/LMM

This Plug will take the place of stock Fuel Pressure Relief Valve (FPRV), and help solve your low rail pressure codes, (P0087 and P1093). This Plug will not allow the FPRV valve to cause a pressure drop under wide open throttle when pressure is most desired.


  • Machined Stainless Steel
  • Eliminates P1093 & P0087 Codes due to FPRV valve malfunctioning.
  • 3 out of 5 Wrenches for installation

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