Genuine Honda block for GX390, and UT2 GX340's. Bored 90 mm.

Electric Start version; can be used on either recoil or electric start engines.

· 408 cc. with stock crank

· 420 cc. with Predator Crank

· 439 cc. with 69 mm. Crank

· 440 cc. with ARC Billet Crank

Note: Side cover not included - Must order separate if needed