Mikuni 003.231 166-O8 Needle Jet

MIKUNI NEEDLE JET.

Round slide jet.

Main hex jet.

VM34/17.

The Mikuni 003.231 166-O8 Needle Jet is a precision carburetor component designed to support consistent fuel metering and reliable engine performance. Manufactured for compatibility with applicable Mikuni carburetor systems, this needle jet works with the jet needle to regulate fuel delivery through the carburetor’s mid-range operating circuit. Its precise internal profile helps maintain accurate air-fuel mixture control during throttle transitions and steady engine operation.
The 166-O8 designation identifies the needle jet specification, while Mikuni part number 003.231 provides a dependable reference for replacement and service applications. This component is suitable for carburetor rebuilding, routine maintenance, troubleshooting, and restoring proper fuel-system calibration. Always verify carburetor model, needle configuration, and manufacturer specifications before installation to ensure correct fitment and performance.
Designed for use as an individual replacement component, the Mikuni 166-O8 Needle Jet is a practical choice for technicians, powersports specialists, and equipment owners maintaining Mikuni-equipped engines. Proper installation and a clean carburetor assembly are essential for achieving consistent fuel flow and preventing contamination-related issues. The part is supplied as one each.

Features:

• Brand: Mikuni

• Part Number: 003.231

• Needle Jet Specification: 166-O8

• Application: Mikuni carburetor fuel-metering systems

• Function: Supports controlled fuel delivery through the carburetor mid-range circuit

• Unit of Measure: Each