This is a 4-stroke 150 hp Yamaha Outboard boat motor for sale. This engine has a 20″ Shaft which is ideal for bass, flats, and pontoon boats. This engine is an EFI with only 415 hours. We have fully boat tested this Yamaha 150 and it runs excellent. The computer diagnostic and compression tests show this engine is within spec and ready to run. These are very strong and reliable outboards. They are very powerful for a 150 hp outboard engine. This motor would be ideal for a bass boat, flats boat, pontoon boat, mako style, whaler style, center console, or any boat that can handle a 475lbs. 4-stroke 150 hp outboard.