Description: Solve the starting difficulty caused by air leakage into the fuel structure. And stop the stubborn leakage around the injector return tee. Package include fuel line, springs clamps, O-rings, compression copper washers, straight tees and elbow tees. Make sure this is the right kit for your 7.3L diesel engine to carefully and compare it with the one you are replacing. Application: For F350 1988-1994 7.3L IDI diesel injector Package Include: 1 × Fuel Line 16 × Springs Clamps 16 × O-rings 8 × Compression Copper Washers 4 × Straight Tees 4 × Elbow Tees .