Mikuni 784-231508-O-4 Needle Jet Carburetors & Accessories

The Mikuni 784-231508-O-4 is a genuine OEM needle jet designed for Mikuni carburetors. This precision-engineered component serves as the primary fuel passage to the main bore (venturi) of the carburetor, playing a critical role in fuel delivery and engine performance.

Key Features:

• Genuine Mikuni OEM replacement part for reliable performance
• Controls fuel mixture during mid-range throttle operation (1/4 to 3/4 throttle)
• Works in conjunction with the jet needle to regulate air/fuel ratio
• Precision-manufactured in Japan to exact flow rate specifications
• Inside diameter engineered to optimize needle function and fuel delivery
• Identified by series and size stamping for accurate replacement

The needle jet works together with the jet needle as part of the main metering system, controlling the amount and mixture of fuel drawn during mid-range throttle operation. The inside diameter of this needle jet directly affects how the tapered jet needle functions as it moves through the jet body. Each genuine Mikuni jet is factory flow-rated to ensure consistent, reliable performance and proper engine tuning.