Sierra Tilt/Trim Relay Assembly 18-99523 for Mercury Outboard Motors

The Sierra 18-99523 is a tilt/trim relay assembly built for Mercury outboard motors. The relay assembly is the electrical switching component that directs battery current to the tilt/trim motor when the operator raises or lowers the outboard, and a failed or corroded relay is a common reason a trim system stops responding even though the trim motor and pump themselves are still good. Replacing the relay assembly with a properly matched unit restores reliable up/down operation without having to replace the entire trim motor.

This assembly ships as a complete unit under part number 18-99523, making it a straightforward swap for the outboard's existing tilt/trim relay. It is sold and identified by its own UPC for easy verification against your outboard's electrical system before ordering.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99523
• Product Type: Tilt/Trim Relay Assembly
• Application: Mercury Outboard
• UPC: 808282395070
• Weight: 0.5 pounds

Fitment

• Mercury outboard motors

Frequently Asked Questions

What is the Sierra 18-99523? It is a tilt/trim relay assembly, part number 18-99523, designed for Mercury outboard motors.

What does a tilt/trim relay assembly do? The relay assembly switches battery current to the outboard's tilt/trim motor, allowing the operator to raise and lower the outboard using the trim controls; the Sierra 18-99523 is the relay assembly for that circuit.

Will the 18-99523 relay assembly fit my Mercury outboard? The Sierra 18-99523 tilt/trim relay assembly is built for Mercury outboard motors; confirm against your outboard's existing relay before ordering since exact model coverage is not listed.

How much does the 18-99523 relay assembly weigh? The Sierra 18-99523 tilt/trim relay assembly weighs 0.5 pounds.

Is the 18-99523 sold as a complete relay assembly or individual parts? It is sold as a complete tilt/trim relay assembly under part number 18-99523, ready to install as a unit.

What is the UPC for the Sierra 18-99523 relay assembly? The UPC for the Sierra 18-99523 tilt/trim relay assembly is 808282395070, which can be used to verify the correct product before purchase.

Why would I need to replace my outboard's tilt/trim relay? A worn or corroded relay is a common cause of an unresponsive tilt/trim system even when the trim motor itself is fine; installing the Sierra 18-99523 relay assembly addresses that failure point.

Does the 18-99523 relay assembly include mounting hardware? The listing covers the tilt/trim relay assembly itself, part number 18-99523; additional mounting hardware details are not specified.

Is the Sierra 18-99523 a direct replacement relay assembly? The Sierra 18-99523 is offered as a direct-fit tilt/trim relay assembly for Mercury outboard motors.

What brand makes the 18-99523 tilt/trim relay? The 18-99523 tilt/trim relay assembly is manufactured by Sierra for Mercury outboard applications.