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Ported Fuel Rail Fitting for 2004.5-2010 Chevy GMC LLY LBZ LMM 6.6l Duramax Our ported fuel rail fitting will help retain fuel rail pressure under wide open throttle conditions.Stainless SteelHelps Retain Fuel Rail PressureAllows more fuel volume to enter fuel railTwo per engine; If installing only one fitting, install it on the drivers side. Fits: 2004.5-2010 (LLY/LBZ/LMM) Chevy/GMC 6.6l Duramax Ported Fuel Rail Fitting for 2004.5-2010 Chevy GMC LLY LBZ LMM 6.6l Duramax Our ported fuel rail fit...

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