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The DEF Guard Additive helps prevent DEF crystallization that can clog the DEF filter
Doc’s Diesel recommends changing transmission filters earlier than OEM recommended for preventative maintenance and to ensure the longevity of your transmission
2010-2013 188 / 255 2007-2009 177 / 2401 SIERRA 3500 2WD
Includes 1 Fuel Filter
DF-320+DDEX6-3
Doc's Diesel VW 1.9L/2.0L Jetta/Golf/Passat Air Filter 2006-2015 (6-Pack) banner The DEF Guard Additive helpsDoc's Diesel Engine Air Filters: Doc's Diesel Premium Engine Air Filters are made for hard working diesel engines that dont quit. They block out dirt, dust, and debris that can wear down your motor over time. The heavy duty silicone gasket holds a tight seal, even when you're running in rough, dusty conditions, and deep pleated filter paper traps more grime to help your truck run longer, stronger, and more efficiently. Product Details: Includes 6
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