Mikuni BN46I-42-B4 Super BN Series 46mm I-Series Carburetor 46mm

34MM CARB

• Uses stock jetting
• OEM replacement on Yamaha WaveRunner 500 and WaveJammer 500

38MM CARB

• Direct bolt-on for many models
• Uses stock jetting

44MM CARB

• OEM replacement for Yamaha SuperJet
• Can be used on many models
• Uses stock jetting

46MM CARB

• Uses 44mm bolt pattern

SUPER BN SERIES SQUARE PUMP TYPE CARBURETORS

• Designed to meet the needs of high horsepower racing watercraft
• Greater air flow and fuel flow through extensive testing to provide maximum output
• Special needle valves and springs give optimum pop-off with larger high and low speed jets
• Feature improved air flow, higher capacity fuel pump, externally adjustable metering screws and replaceable fixed jets for easy high and low speed tuning

HIGH-PERFORMANCE SUPER BN SERIES 44MM CARBURETOR

• The most popular mod for an all-around performance boost
• An adrenalized version of the Super BN series
• Extensive race testing for higher air and fuel flow
• Uses primer fitting with butterfly choke removed for increased airflow (primer kit necessary)
• Special needle valves and springs give optimum pop-off for a strong mid-range
• Larger high- and low-speed jets for great response and killer top end
• Jetted for applications using aftermarket manifold and flame arrestor 2.3 viton needle valve, #100 pilot jet and #125 main (high) jet
• Has extended throttle shaft