Mikuni Genuine Super BN Carburetor Rebuild Kit – Square Diaphragm Cover (I Series 38/40) for 38mm, 44mm & 46mm SBN Carbs
Genuine Mikuni OEM Rebuild Kit for All Mikuni Super BN Square Body Carburetors (38mm, 44mm, 46mm)
Restore smooth, reliable performance and eliminate common carb issues like hard starting, bogging, hesitation, poor idle, or fuel leaks on your vintage 2-stroke personal watercraft with this authentic Mikuni Genuine rebuild kit. Designed specifically for the Super BN Series square-body carbs (I series with square diaphragm cover), this kit includes every internal gasket, diaphragm, O-ring, check valve, and seal needed for a complete overhaul—one kit services one carburetor.
Key Features:
- 100% Genuine Mikuni OEM Parts – Exact factory specs for perfect fit, durability, and performance
- Complete Internal Refresh – All gaskets, diaphragms, O-rings, needle valve components, and check valves included
- Square Diaphragm Cover Compatibility – Tailored for Mikuni Super BN 38mm, 44mm, and 46mm square-body carbs (I series 38/40 style)
- Prevents Common Failures – Fixes leaking diaphragms, worn O-rings, sticky floats, and degraded check valves for crisp throttle response and fuel efficiency
Kit Includes:
- All required internal gaskets and seals
- Diaphragm (square style)
- O-rings
- Check valves
- Needle valve seat components
- Float bowl gasket and other small seals
(One kit per carburetor – most PWCs use 1–2 carbs depending on model/engine)
Compatibility – Fits Mikuni Super BN Square Body Carbs on Many Vintage 2-Stroke PWCs (1990–2005 Era):
Sea-Doo Models:
- 1991–1995: SP, XP, GT, GTX, GTS, SPX, SPI, Explorer, Speedster, Sportster
- 1996–2005: SP, SPI, SPX, GTS, GTI, GS, GSX, GTX, HX, XP, GP760/1200, Challenger, Explorer, Sportster, Speedster, LS/LX 2000/210, AR/LS/LX 210, XL700/760, SUV, SuperJet, WaveRaider, WaveVenture, Exciter, Blaster, Raider, Venture, Pro VXR, FX-1, GP series, and more (see full list in original for exact years)
Kawasaki Models:
- 1997–2000: SXi Pro (750/900/1100)
Polaris Models:
- 1992–1997: SL 650/750/780, SLT 750/780, SLX
Yamaha Models:
- 1990–2005: SuperJet, WaveRunner III (non-GP), WaveRunner LX/VXR, Blaster, Pro VXR, FX-1, WaveRaider, GP760/1200, Exciter, Raider series, WaveVenture, XL700/760, LS/LX 2000/210, AR/LS/LX 210, SUV, Runner XLT, and more
Tigershark Models:
- 1994–1999: Barracuda, Daytona, Monte Carlo, Montego, 900/1000, TS 640/770/1000, 770L/770R
Important Notes:
- Confirm your carb model is a Mikuni Super BN square-body (38mm, 44mm, or 46mm with square diaphragm cover) before purchase – not compatible with round-body BN carbs or other brands/sizes.
- Always verify carb size and diaphragm style on your engine against the service manual or existing carb markings.
- Professional carb cleaning and tuning recommended after rebuild for best results (float height, jetting, synchronization).
Bring your classic 2-stroke PWC back to life with genuine Mikuni quality.
Order your Mikuni Super BN Carburetor Rebuild Kit today and enjoy crisp, reliable throttle response on the water!
1 Review
-
Bikini rebuild kit
Great quality, noticeable difference from the overseas crap the others sell. Worth the price.