Replacement GM 12642623 6.6 diesel fuel pump/ water seperator fuel filter housing Fits 2005-2016 Chevrolet Silverado GMC Sierra 6.6L Duramax Fits 2005 LLY, 2006-2007 LBZ, 2007.5-2010 LMM 2011-2016 LML

After receiving the goods, if you have any questions, please contact us through Amazon mail. We have professional mechanics and provide quality after-sales service. Our after-sales service will definitely satisfy you. Thank you! Please note that when installing this filter housing in cold weather, the O-ring inside the prime pump may freeze very stiff. It is recommended to install it indoors and heat the "prime pump" to soften the O-ring to ensure no leakage

• Fuel primer pump assembly with filter. this part is a direct fit for 2004.5-2016 Chevy/GMC 2500HD/3500 6.6L Duramax.
• The part can be pre-tested for suction after unpacking by blocking the fuel feed tube with your left thumb, pressing the primer pump with the palm of your right hand, and then releasing your left thumb to see if the suction is to your satisfaction. It is recommended to have it installed by a professional and skilled mechanic, so that a novice can avoid accidents during the installation process, which can make you feel irritated.
• When installing this filter housing outdoors in the cold, the O-ring inside the primer pump may freeze very stiff and easily leak. It is recommended to heat the primer pump before installation to soften the internal O-ring. Boiling water can be used for heating or placed next to the heater for baking and heating.
• The installation is very simple and can be operated by novices.The filter assembly is suitable for Chevrolet 6.6L Duramax diesel 2500 HD 3500 HD pickup truck from 2005 to 2012.Great OEM replacement for the GM 6.6 Diesel fuel pump/ water seperator
• A brand-new filter housing designed by an American mechanic, with heating function, detachable inside, and a brand-new tightness test, ensures that the filter housing sent to you will not leak.
• Please note that its fuel inlet connector is downward, so as to ensure that this product is suitable for your pickup truck.
• If you have any questions about this product, please contact us by mail, we will answer them online, and if necessary, we will contact a mechanic to help you.