2017 Yamaha F300 4.2L Offshore XCA Outboard Motor

Topping Yamaha's 2017 4.2-liter V6 lineup, this XCA-trim engine is rated 300 hp, aimed at larger offshore boats that need extra reserve power; its charging system is rated at 70 amps, and the whole package comes in around 562 lbs on the scale with a 25-inch shaft fitted.

Block and bore

Compression sits at 10.3:1 on this block, and the gear ratio works out to 1.75:1. DOHC fuel injection layered with variable camshaft timing supplies the cylinders, starting is electric, and trim moves through a -3 to +16 degree band.

Buyer notes

The oil reservoir holds 6.3 liters with a filter fitted or 6.0 without, and a single-throttle-valve intake pairs with a single-belt drive system for simpler long-term upkeep on an engine that typically sees heavy running hours on a larger offshore hull. Confirm whether your quote includes a matched propeller, since this displacement is often sold as a bare engine rather than a complete package, and ask about freight cost separately given the weight involved, since a motor this size usually ships via a dedicated freight line rather than a standard parcel carrier, which adds both cost and lead time.

Pleasure and government coverage runs three years apiece on this model, commercial coverage one. This engine ships new; confirm your rigging and control-box pairing with us before ordering.