Reproduction heat-riser choke tube set ford various 1963-69 Ford and Mercury 8-cylinder models including Mustang Falcon Ranchero and Comet. This set fits 260 289 and 302 cid V8 engines with 2 or 4-barrel automatic choke carburetors. It consists of the aluminum tubes that run from the exhaust manifolds to the choke mechanism fiberglass insulating sleeves rubber hose brass fittings and S-clip. Clogged of leaking choke tubes can cause difficult starting and poor fuel economy. Replacement is most often the best long-term solution to a malfunctioning choke tube.Made in USA.