Mikuni Genuine 2.98mm (Leaner) Jet Needle.
Fits: HSR42 Carburetors
Genuine Mikuni jet needle
Sold each
Made in Japan

The Mikuni J8-8DDY01-98 is a jet needle designed for the Mikuni HSR42 carburetor, commonly used in Harley-Davidson motorcycles and other performance applications.​

Key Features
Part Number: J8-8DDY01-98
Application: Specifically for Mikuni HSR42 carburetors
Function: Provides a leaner fuel mixture compared to the standard J8-8DDY01-97 needle
Material: Manufactured from brass for durability and reliable performance
Length: Approximately 81mm (3-3/16 inches) ​

Tuning Considerations
The J8-8DDY01-98 needle is ideal for fine-tuning the midrange fuel delivery in your HSR42 carburetor. Using this leaner needle can help achieve a more precise air-fuel mixture, potentially improving throttle response and fuel efficiency. It's important to note that while the HSR42 and HSR45 carburetors share similar needle lengths, their tapers differ, making them non-interchangeable. The HSR48 carburetor uses a longer needle, approximately 85mm (3-3/8 inches) in length. ​