+3 Race Fuel Rail Plug for 2004.5-2010 6.6l Duramax & 2007.5-2012 6.7L Cummins KB-6.6l-6.7l-RFP $22.95 In stock Quantity: 1 Add to Bag Product Details Our Race Fuel Rail Plug replaces the Pressure Relief Valve (PRV) which tends to leak fuel rail pressure under wide open throttle conditions. Stainless Steel Helps Retain Fuel Rail Pressure Increased Throttle Response (If the PRV is leaking) Eliminates Low Fuel Rail Pressure DTC's P1093 & P0087 Fits: 2004.5-2010 (LLY/LBZ/LMM) Chevy/GMC 6.6l Duramax & 2007.5-2018 6.7L Cummins Save this product for later Favorite