Honda GX340 / GX390 Replacement - Main Jet

Carburetor main jet for Honda GX340 and GX390 engines. Cross-references OEM Honda part number format 99101-ZH8-XXXX (varies by jet size). Stock jet size varies by application and altitude — common sizes for GX340/GX390 range from #78 to #90. Also compatible with similar clone engines. Note: Jets are sold individually.