Mikuni Carburetor – Main Jet. Size 177.5 Fits 40PHH, 44PHH. Item #27 in exploded view diagram. Genuine Mikuni #N100.604-177.5, Made in Japan. Sold Individually. Large Round 8mm diameter head with 5mm x 0.7 Thread pitch, 9mm Overall Length. 4mm thick head. Machined groove around head.

Main Jets are available in 50-210 (increments of 2.5), 220, 230, 240. Main Jets fits both 40PHH (“8”) and 44PHH (“OA” “OB)  Jet Blocks (Emulsion Tube).  40PHH Jet Block #N101.188. 44PHH Jet Block #N101.253-OA and #N101.253-OB.

The Mikuni Main Jet is for metering the amount of fuel required for medium and high speed driving, acceleration, as well as for climbing a slope. Two Main Jets required per carburetor.

Also fits many Solex PHH Carburetor and other Mikuni Carburetor applications. Please compare images and measurements with your application for confirmation.

Also Fits: Type 3 40PHH 44PHH, Type 4 40PHH 44PHH, Type 2 50PHH – Carburetors

Sorry, Jets are not returnable.

Authorized Mikuni Distributor