The Weber 70371 Grill Transfer Line Side Burner supplies gas to the compatible side burner for controlled cooking operation. This replacement line connects the grill’s gas supply to the side burner, allowing fuel to flow when the burner control is opened. The burner uses the gas to produce heat for cooking or warming food. A properly fitted transfer line maintains the intended gas con... https://www.wholetoolbox.com/weber-70371-grill-transfer-line-side-burner/70371.html