Mercury 350CXL Verado FourStroke

The used Mercury 350CXL Verado FourStroke is a 350 hp, inline-6 outboard on a 25-inch shaft, built with counter rotation for pairing on twin-engine boats. An advanced mid-section isolates the powerhead on four progressive-rate mounts to cut down on the vibration a long inline engine would otherwise send through the hull.

Why counter rotation matters

Running this engine on one side of a twin installation, matched against a standard-rotation unit on the other, balances steering torque at the helm; pair it incorrectly and handling pulls to one side. Electro-hydraulic power steering is standard, which keeps that torque out of the wheel entirely.

Powerhead and charging

The 2.6-liter inline-6 relies on forced induction, its intake cooled air-to-air and boost metered electronically, to reach a 5800-6400 rpm full-throttle ceiling. Weighing 668 lbs dry, it draws its charge from a belt-driven alternator rated at 70 amps; digital throttle and shift is a separate purchase.

Does this engine need a matching unit on the other side? Yes, counter-rotation models are meant to be paired with a standard-rotation engine.

Is a propeller included? The listing does not specify; confirm that with us before ordering.

This used motor's hours and maintenance history are worth a look before ordering. Coverage altogether reaches 5 years, Mercury's 3-year standard term plus 2 more years through Product Protection Gold.