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Flowmaster introduces our new manifold downpipes for 1964-1966 Ford Mustangs with 289 V8 engines. These 2.50 in. mandrel bent 409S stainless steel pipes include the 2-bolt flanges, donut gaskets and donut sleeves. Works with kit #17273 and #817273. These downpipes are covered by Flowmaster's Lifetime Limited Warranty.
Stainless Steel Construction
Mandrel Bent Tubing
Lifetime Limited Warranty
Fits 1964-1966 Ford Mustangs with 289 V8 engines. Use With 817273 for Complete Manifold-back System.
Flowmaster has its roots in solving the engine noise problems encountered by California racers in the 1980s. In 1983 Flowmaster’s founder, Ray Flugger, created his first patented design of racing silencers, which dampened noise with minimal loss of power. Ray attached handles to ease carrying the square shaped race mufflers through the race pits, and the mufflers became known as the "suitcase mufflers." Today, the innovative Flowmaster mufflers are the result of years of development with top race engine builders, thousands of hours of dyno research and "real-world" on-track testing.