Mikuni J8-7DH05 Jet Needle for VM Carburetors Jets

The Mikuni J8-7DH05 is a precision-engineered jet needle designed for use in Mikuni VM series round slide carburetors and select OEM Mikuni carburetor applications. This genuine Mikuni replacement part plays a critical role in controlling fuel mixture delivery during mid-range throttle operation.

Key Specifications:

• Part Number: J8-7DH05 (also known as 7DH5)
• Needle Length: 72.2mm
• Length to Taper Point: 27.4mm
• Series: #7 (fits 40mm and 44mm spigot mount carburetors)
• Made in Japan

Function and Performance:

The jet needle is a tapered rod positioned in the throttle valve by an E-clip. It controls the fuel-air mixture in the mid-range throttle position (1/4 to 3/4 throttle). As the throttle opens, the needle's taper increases clearance between the jet needle and the fixed needle jet outlet, allowing more fuel to flow as air volume increases to maintain the proper air-fuel ratio.

Applications:

Compatible with several Mikuni VM model carburetors and original equipment Mikuni carburetors used on motorcycles, ATVs, and powersports vehicles. The needle position can be adjusted using the E-clip to fine-tune fuel mixture: lowering the clip richens the mixture, while raising it creates a leaner condition.

This genuine Mikuni jet needle ensures precise fuel metering and optimal engine performance across the mid-range throttle spectrum.