This amazing tool kit is a must - have for working on Duramax engines. It's a universal fit for Duramax models. The set comes with six different sizes: 5/16', 3/8', 1/2', 5/8', 3/4' & 7/8', giving you the flexibility to handle various quick - connect fittings. Crafted from high - quality materials, it offers excellent durability. Part Number: 37000.

Using this tool kit is a breeze. First, identify the size of the quick - connect fitting on your Duramax engine. Select the appropriate tool from the set with the six sizes provided. Insert the tool into the fitting and gently apply pressure to disconnect the fuel line. When you're done, make sure to clean the tools with a dry cloth to prevent dirt and debris from building up. Store the kit in a dry place to avoid rusting. Always double - check that the fitting is properly reconnected after use to prevent fuel leaks.