Mercury 115ELPT 115HP Outboard – 20in Shaft, EFI

Mercury 115ELPT is a 115 HP EFI outboard with a 20-inch shaft for boats whose manufacturer specifies a long-shaft transom. It can be considered for aluminum fishing boats, bay boats, pontoons, bowriders, or utility hulls only when their capacity plate, installed engine-weight limit, steering, and remote rigging requirements support this configuration.

An approximately 18 to 22 foot boat length may describe a market segment, but it cannot establish compatibility. A similarly sized fishing boat can require a different shaft length or maximum horsepower. Speed depends on hull profile, beam, dry weight, passenger load, fishing gear, livewell load, propeller pitch, engine height, trim, water conditions, and wide-open-throttle RPM.

Key Features of Mercury 115ELPT

- The 20-inch shaft requires a compatible long-shaft transom and engine-height setup confirmed during professional rigging.
- Electronic fuel injection identifies the documented fuel-delivery arrangement for this Mercury 115 HP outboard configuration.
- A 115 HP rating requires verification that the vessel capacity plate permits this engine output.
- Remote operation requires matched steering, throttle, shift, gauge, electrical-harness, and fuel-system components for installation.
- Serial-number verification helps identify correct rigging equipment before ordering controls, gauges, accessories, or replacement components.

Why Choose Mercury 115ELPT

Choose this configuration when the boat builder calls for a 20-inch shaft and permits a 115 HP outboard within the vessel’s weight and capacity limits. It may fit certain fishing, bay, pontoon, bowrider, or utility boats, but that category label is insufficient. Transom measurement, steering load, rigging components, propeller selection, and normal operating load must guide the final decision.

- Matches approved boats with a documented 20-inch long-shaft transom requirement.
- Requires capacity-plate, engine-weight, steering, and remote-rigging confirmation before installation.
- Connects speed expectations to hull, propeller, load, and mounting setup.

Warranty, Support and Maintenance

For eligible Mercury FourStroke outboards used for pleasure purposes in the United States, Mercury lists a 3-Year Limited Warranty and 3-Year Corrosion Warranty. Commercial use receives a 1-Year Limited Warranty without corrosion coverage. Eligibility depends on current Mercury terms, registration, and actual use classification. Follow the applicable Operation, Maintenance and Warranty manual for scheduled service, corrosion-prevention measures, gearcase checks, and maintenance records. For product details and order support, Mulmotor offers assistance before your purchase is placed.