Click to expand Tap to zoom Duramax Water-in-Fuel Sensor Double Sided Wrench by OEM Sale $41.99 SKU MI-SCH13100 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Two tools in one 42 mm 6 side fits 2011 to current years 40 mm 12 side fits 2001 to 2010 Used every time a fuel filter is replaced Made in U.S.A.