Mikuni Large Hex Type Main Jet, Pair of #340, Snowmobile, ATV, Motorcycle Jets

Mikuni Main Jet - 4/042-340

YAMAHA SNOWMOBILE K&L MIKUNI CARBURETOR 4/042 LARGE HEX MAIN JET #300 18-4440

YAMAHA SNOWMOBILE K&L MIKUNI CARBURETOR 4/042 LARGE HEX MAIN JET #310 18-4441

YAMAHA SNOWMOBILE K&L MIKUNI CARBURETOR 4/042 LARGE HEX MAIN JET #290 18-4439

YAMAHA SNOWMOBILE K&L MIKUNI CARBURETOR 4/042 LARGE HEX MAIN JET #240 18-4434

YAMAHA SNOWMOBILE K&L MIKUNI CARBURETOR 4/042 LARGE HEX MAIN JET #145 18-4418

YAMAHA SNOWMOBILE OEM MIKUNI CARBURETOR 4/042 LARGE HEX MAIN JET #440 18-4399