Carburetor Diaphragm ~ Replaces Yamaha OEM 3H5-14940-00-00 (33-0016)

Replace a stiff, cracked, torn, or leaking CV carburetor diaphragm with this aftermarket rubber carburetor diaphragm for select vintage Yamaha models using the 3H5 / 3F7 diaphragm style. A failed diaphragm can cause poor throttle response, weak slide lift, uneven running, and frustrating carburetor tuning problems. Aftermarket carburetor diaphragm replacing Yamaha OEM #3H5-14940-00-00 Also cross-referenced with Yamaha #3F7-14940-00-00 For Mikuni BS34 / BS36-style CV carburetor applications using this diaphragm size Approximate reference dimensions from comparable listings: 72 mm outer diameter and 28 mm inner diameter Sold each. Multi-carb bikes require one diaphragm per carburetor; order the quantity needed for your service Fitment / Compatibility Fits: Yamaha XS650 (1978-1984) Yamaha XS400 (1980-1983) Yamaha XS1100 (1980-1981) Yamaha XJ1100 Maxim (1982) Yamaha XJ900 Seca (1983) Yamaha SR250 Exciter (1980-1982) Buyer check: confirm your carburetor uses the 3H5 / 3F7 diaphragm style before ordering. Compare your original diaphragm size, carburetor model, slide orientation tab, and OEM number. Some applications may require trimming or aligning the outer rubber tab during installation.