Saber Cycle invested in the reproduction of the Honda Goldwing GL1500 carburetor slide diaphragm that is now IN STOCK and sells under brand, Barracuda Bike Parts™. Honda calls it a vacuum piston diaphragm, OEM 16111-MY4-000 and the suggested retail price is around $120 each. Owners of GL1500s that need slide diaphragms replacements usually get horrible gas mileage and some GL1500s are being parked because they can’t run.
The GL1100 and GL1500 are the only Honda Goldwing models that have accelerator pump diaphragms. A pinch or tear of the diaphragm or atrophy of the diaphragm’s material will allow excess air into the carburetors, forcing owners to adjust their carbs for richer fuel.