6.6L Duramax Diesel Fuel Rail Plug

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Passenger Diesel


6.6L Duramax Fuel Rail Plug For Vechiles with the CP3 Fuel Injection System Only!

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Sale price$27.98 Regular price$34.99

6.6L Duramax Fuel Rail Plug - Fuel Rail Cap - Race Valve   

This precision-machined fuel rail plug part is offered with FREE SHIPPING!                                   

Duramax Race Plug - Fuel Race Valve 2004.5 to 2019 GMC Duramax LLY / LBZ / LMM / LML / LP5 motors.

The Duramax 6.6L Fuel Rail Plug works on the 2004.5 to current model Duramax 6.6L powered vehicles.

  • 6.6L Duramax LLY 2004.5 to 2005 models
  • 6.6L Duramax LBZ 2006 to 2007 models
  • 6.6L Duramax LMM 2007 to 2011 models
  • 6.6L Duramax LML 2011 to 2016 model engines with a complete CP3 conversion kit.
  • 6.6L Duramax LP5 2017 to Current engines with a complete CP3 fuel rail and injection pump conversion kit.

This Duramax 6.6L Fuel Rail Plug benefits:

  • Constructed from T303 Stainless Steel
  • Highest quality control machining possible.
  • Manufactured in an ISO 9001 accredited facility.
  • Eliminates unwanted pressure relief of the fuel rail.
  • Supports the increased pressure requirement commanded when running a high-performance tuning device.
  • Prevents programming error codes caused by increased fuel rail pressure.
  • It allows the CP3 pump to provide ample pressure to the rail and injectors.
  • Prevents trouble codes P1011, P0087, or P1093 associated with fuel rail depletion.
  • Ensures a seal of up to 30,000 psi on the fuel rail.

This 6.6L Duramax Race Plug - Fuel Rail Plug cannot be used on any vehicles registered or certified for highway use. This Fuel Rail Plug is a high performance Duramax 6.6L Fuel Rail Plug that is intended SOLELY for closed-course racing use and is not street legal in ANY state.

NOTE: This 6.6L Duramax Diesel Fuel Rail Plug - Fuel Rail Cap For 6.6L Duramax replaces the factory relief valve disabling any chance of rail pressure drop. If your Duramax diesel engine does not have a factory relief valve used in the fuel rail associated with a complete CP3 conversion kit, this high performance fuel rail plug will not work for your application. These high performance fuel rail plugs will not work in an engine using a CP4 common rail.

6.6L Duramax Diesel Fuel Rail Plug Duramax Race Plug

This 6.6L Duramax Diesel Fuel Rail Plug is MADE IN THE USA!

  • by KLM Performance
  • Engine : 6.6L Duramax
  • Item Number: PD 6.6L FRP
  • Make: Chevy | GM
  • Model : 2500HD | 3500HD | 4500 | 5500
  • Year : 2004.5 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019
  • Manufacturer Part No: 6.6L FRP
  • Product Application: 2004.5 to Current model 6.6L Duramax diesel engines running a CP3 fuel injection pump with the factory relief valve used in the fuel rails of the CP3 common rail fuel injection system.
  • Height: 4
  • Width : 5
  • Brand: Passenger Diesel
  • What are the benefits of installing a Fuel Rail Plug in my 6.6L Duramax Diesel Engine? Installing a Fuel Rail Plug or Race Plug allows your CP3 Fuel Injection Pump to maintain higher fuel pressures in the fuel rail. The higher the fuel injection pressure, the better the diesel fuel's atomization into the cylinder. Improved atomization of the fuel diesel leads to improved air-fuel mixture and increased combustion performance. With the improved combustion of the air-fuel mixture comes better engine performance, higher power levels, and reduced emissions. What is the O.D. of this rail plug? This 19 MM fuel rail plug is designed for use with the CP3 Fuel Injection System Common Rail Fuel Rail. This part does not work on the CP4 Fuel Rail as that part is a different size of Seventeen Millimeters. What is the Fuel Rail Plug constructed of? This American-made 6.6L Duramax Diesel Fuel Rail Plug is Constructed from T303 Stainless Steel. Does this rail plug come with a new o-ring? No, this Duramax Race Plug installation does not contain a new O-Ring! The reuse of the OEM O-ring will seal this precision part.
  • Part Number6.6L FRP
  • Manufacturer: Passenger Diesel
  • Product Note: This precision-machined high-performance part provides increased engine performance in your Duramax diesel engine by maintaining the fuel pressure in the fuel rail.

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