Holley Carburetor Throttle Cable Stud Kit 20-37 Cable Hookup & Transmission 20-37 Steel Throttle Cable Stud Kit for Holley Carburetors. Throttle Cable Hookup & Transmission Kickdown Linkage. This hardware set includes two threaded studs, matching nuts, lock washers, and black retaining clips. Ideal for automotive restoration or repair projects requiring a secure kickdown linkage connection. The components feature a durable metallic finish for long-lasting performance in engine bay environments. #Utility