Mercury 30HP 30ELGA EFI Outboard Motor – 20″ Shaft
The 30-horsepower Mercury 30ELGA EFI outboard uses a 20-inch shaft for compatible transoms. Electronic fuel injection supports controlled fuel delivery, while proper shaft matching helps maintain propeller alignment and efficient thrust transfer.
Description
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Common Question of Mercury 30ELGA
Is Mercury 30ELGA fuel injected?
Yes. The EFI designation identifies an electronic fuel injection system on this Mercury 30-horsepower outboard. Its 20-inch shaft suits a matching long transom, while fuel injection supports controlled delivery during starting, acceleration, and cruising. Confirm controls, battery, wiring, steering, and hull rating before installing this high performance outboard motor.
What transom fits its shaft?
A 20-inch transom is the intended match for this 30ELGA configuration. Measure the boat before purchase because incorrect shaft length can affect cooling-water pickup, propeller immersion, steering response, and handling. Correct measurement supports a properly fitted ready to bolt marine outboard package.
What should buyers verify?
Verify the boat’s maximum horsepower, transom strength, engine weight capacity, steering hardware, control equipment, battery connections, wiring, fuel supply, gauges, and package contents. EFI components require proper electrical integration. Follow Mercury installation documentation before mounting or operating this 30-horsepower outboard.













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