Mercury 90ELPT SeaPro Command Thrust

This used Mercury 90ELPT SeaPro Command Thrust is a 90 hp, four-cylinder commercial-grade outboard on a 20 inch shaft, tuned for steady, lower-stress running rather than peak sport performance.

What it is for

SeaPro engines are calibrated to deliver their strongest pull at lower rpm, which Mercury designs for easier starts, better fuel efficiency, and less strain over repeated daily use, getting a hull on plane sooner and holding it there at reduced speed.

What to check before buying

Shaft length is 20 inches here; confirm it matches your transom. Steering is remote, and the mechanical throttle and shift hardware this motor needs is sold on its own rather than bundled in.

Numbers worth knowing

This SeaPro runs electronic fuel injection across a 2.1 liter, four-cylinder block, with a 35 amp (441 watt) alternator and SmartCraft digital technology compatibility. Dry weight is 363 lbs, trim is power trim and tilt, and Mercury calls for an NMMA certified SAE 25W-40 synthetic blend oil. Shallow water trim range is 20 degrees, maximum trim range is 22 degrees, and maximum tilt range reaches 70 degrees, with a CARB star rating of 3.

Common questions

Is a propeller part of this listing? No, a propeller is not included.

How is starting handled? Smart Start electric starting.

Is this tuned for recreational or commercial use? It carries Mercury's SeaPro commercial-duty calibration rather than the standard recreational tune.