Description Ported Fuel Rail Fitting for 2004.5-2010 GM 6.6L Duramax Fits LLY, LBZ, LMM Increase fuel flow volume from the fuel pump to the fuel rail by replacing your restrictive stock fuel rail fitting. Reducing pressure drop and increasing performance. For Race or Dual Fueler applications, we recommend using this fitting on both driver and passenger side rails. Made in Pensacola, FL. USA
