Fuel Line Disconnect Tool - AutoZone The best fuel line disconnect tool for cars and trucks allows you to quickly and easily disconnect the fuel line. Fuel lines have more pressure in the lines creating a secure connection. Using a fuel line disconnect tool helps you disconnect the fuel line from the connector without causing damage.OEM 4 Pcs. Disconnect Set · OEM 6 Pcs. Disconnect Set Amazon: ford fuel filter tool Amazon's Choice for ford fuel filter tool. ABN Fuel Line Disconnect Scissor Tool for 5/16” Inch and 3/8” Inch GM, Ford, and Mazda Vehicle Fuel Lines. 4.4 out of 5 stars 339. $7 $ 7. 49. Get it as soon as Wed, Sep 11. FREE Shipping on orders over $25 shipped by Amazon.