Genuine Mikuni Super BN Needle Valve Kit – MKBN3844SPR‑2 MK‑BN44 NV 2 – Made in Japan

OVERVIEW

The Genuine Mikuni Super BN Needle Valve Kit (MKBN3844SPR-2) restores precision fuel delivery within high-performance watercraft carburetors to ensure stable engine operation. Designed as a direct needle valve replacement assembly, this kit features rigorous Japanese manufacturing standards to optimize fuel metering and improve throttle response.

ENGINEERING & PERFORMANCE

This needle valve kit reduces pop-off pressure to unlock higher fuel flow capacity, addressing performance bottlenecks in large-displacement carbureted systems. By integrating an 80-gram spring rate with a jet size 2.5 configuration, the mechanism delivers smoother acceleration and sustained fuel metering during heavy throttle loads. Manufactured in Japan with tight engineering tolerances, the components provide durable resistance against high-vibration marine environments while maintaining precise mixture ratios.

KEY FEATURES

• Genuine Mikuni Super BN Needle Valve Kit for carburetor maintenance
• Compatible with 38 mm, 44 mm, and 46 mm Super BN carburetors
• Reduces pop-off pressure to support increased fuel flow capacity
• Integrates an 80-gram spring rate for consistent pressure regulation
• Features a jet size 2.5 configuration for optimized metering
• Manufactured in Japan using strict precision engineering standards
• Delivers measurable improvements in throttle response and engine stability
• Restores critical calibration points in modified watercraft engines

TECHNICAL SPECIFICATIONS

• Brand: Mikuni
• Part Name: Genuine Super BN Needle Valve Kit
• Kit Number: MKBN3844SPR-2 MK-BN44 NV 2
• Component Type: Needle Valve / Fuel Delivery Component
• Spring Rate: 80 grams
• Jet Size: 2.5
• Carburetor Compatibility: 38 mm, 44 mm, 46 mm Super BN
• Origin: Made in Japan

FITMENT

• Mikuni Super BN 38 mm Carburetors
• Mikuni Super BN 44 mm Carburetors
• Mikuni Super BN 46 mm Carburetors
• High-Performance Watercraft Engines

WHY RIDERS CHOOSE THIS

Riders select this Mikuni needle valve kit to resolve airflow restrictions and premature pop-off events common when modifying high-capacity Super BN carburetors. The inclusion of an 80-gram spring and calibrated jet sizing ensures the engine maintains adequate fuel mass under heavy throttle, delivering a smoother power curve without hesitation. Precision manufacturing stabilizes mechanical wear surfaces over time, guaranteeing consistent fuel metering and restoring the exact mixture ratios required for dependable watercraft operation.