Dorman 800-135 Nylon to Steel Fuel Line Compression Union 1/4", 5/16" and 3/8" adaptors included Whenever possible Dorman corrects the design problem that caused the original part to fail A quality part backed by a Dorman limited lifetime warranty 1/4", 5/16" and 3/8" adaptors included Whenever possible Dorman corrects the design problem that caused the original part to fail A quality part backed by a Dorman limited lifetime warranty A quality part backed by a Dorman limited lifetime warranty Meets or exceeds OEM (Original Equipment Manufacturer) requirements