Genuine Mikuni SBN / Super BN 38/44/46 Carb Rebuild Kit – OEM Japan

OVERVIEW

This genuine rebuild kit restores precise fuel metering and stable throttle response to Mikuni BN-series carburetors used on two-stroke personal watercraft. Constructed from OEM-specification diaphragms, gaskets, and O-rings, the kit includes comprehensive sealing components and internal hardware required for full mechanical disassembly and reassembly of SBN or Super BN units. Manufactured in Japan, this replacement component addresses maintenance needs for marine engines exposed to harsh saltwater conditions.

ENGINEERING & PERFORMANCE

Built under strict OEM Japanese manufacturing standards, the included diaphragms and gaskets deliver consistent fuel flow and reliable acceleration across both square-pump and round-pump carburetor configurations. The kit provides complete check valves and internal fasteners to facilitate total mechanical restoration, returning the carburetor to factory tolerances required for high-performance marine operations. By replacing seals prone to hardening or fatigue caused by prolonged saltwater exposure, this rebuild kit eliminates idle instability, hesitation, and stalling while maintaining power integrity at high RPMs.

KEY FEATURES

• Genuine rebuild kit designed specifically for Mikuni BN-series carburetors
• OEM-specification diaphragms engineered for consistent and reliable fuel delivery
• Comprehensive set of gaskets, O-rings, and check valves for full sealing coverage
• Includes all internal hardware required for complete disassembly and assembly
• Designed for SBN and Super BN square-pump and round-pump configurations
• Manufactured in Japan to meet strict durability and tolerance standards
• Compatible with BN34, BN38, BN44, and BN46 carburetor models
• Sold individually per carburetor unit

TECHNICAL SPECIFICATIONS

• Brand: Mikuni
• Part Name: Genuine Mikuni SBN / Super BN Carb Rebuild Kit
• Component Type: Complete Rebuild Kit
• Material: OEM-spec diaphragms, gaskets, and O-rings
• Compatible Models: BN34, BN38, BN44, BN46
• Application: 2-stroke watercraft and personal watercraft

FITMENT

• Mikuni BN34 Carburetor
• Mikuni BN38 Carburetor
• Mikuni BN44 Carburetor
• Mikuni BN46 Carburetor
• SBN Square-Pump Carburetor
• SBN Round-Pump Carburetor

WHY RIDERS CHOOSE THIS

Riders choose this kit to restore two-stroke watercraft performance to factory specifications while ensuring precise fit and function across diverse BN-series carburetors. The inclusion of genuine specification diaphragms and check valves provides immediate improvements in fuel metering, effectively resolving common issues such as stalling and sluggish throttle response. Because the package encompasses every internal seal and hardware piece needed for a complete teardown, it offers a definitive solution for carburetors suffering typical wear in demanding marine environments. Production in Japan guarantees that components meet the tight tolerances necessary for high-revving marine engines, making this rebuild kit a dependable choice for restoring peak operation.