Sierra 18-6787 Tilt/Trim Motor, Replaces Yamaha 67F-43880-00-00, Fits Yamaha F75/F80/F90/F100 4-Stroke

The Sierra 18-6787 is a tilt/trim motor engineered to replace the Yamaha tilt/trim motor on select Yamaha 4-stroke outboard engines. This motor drives the hydraulic trim and tilt system that raises and lowers the outboard, letting the operator adjust engine angle for performance and trim boat attitude on the water, as well as tilt the engine up for trailering, shallow water, or storage. It directly replaces Yamaha part number 67F-43880-00-00 and is built to meet or exceed the performance of the original equipment part it replaces, engineered to withstand the harsh marine environment.

Each unit ships with the O-ring included, so it is ready for installation onto the trim/tilt assembly without sourcing a separate seal. The motor is designed as a direct fit for the specified Yamaha 4-stroke outboard models below, restoring reliable tilt and trim operation on engines where the original motor has failed or worn out. As a Sierra part, it is backed by Sierra's Industry Leading Customer Satisfaction Warranty, which covers defects in workmanship and materials for the useful life of the product.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-6787
• Product Name: Tilt/Trim Motor
• Category: Yamaha Outboard Trim System
• Weight: 3.5 pounds
• O-Ring: Included
• Engine Type: 4 Stroke
• Operation Mode: Manual
• Mounting Type: Engine Mount
• Fuel Type: Gasoline
• UPC: 808282188238

Fitment

• Yamaha 4-Stroke F75 (2003 to 2004)
• Yamaha 4-Stroke F80 (1999 to 2003)
• Yamaha 4-Stroke F90 (2003 to 2004)
• Yamaha 4-Stroke F100 (1999 to 2002)

Replaces (OEM)

• Yamaha 67F-43880-00-00

Frequently Asked Questions

What does the Sierra 18-6787 tilt/trim motor fit? The Sierra 18-6787 fits Yamaha 4-stroke outboards: F75 (2003 to 2004), F80 (1999 to 2003), F90 (2003 to 2004), and F100 (1999 to 2002).

What Yamaha OEM part number does the 18-6787 replace? It replaces Yamaha part number 67F-43880-00-00.

Does the tilt/trim motor come with an O-ring? Yes, the Sierra 18-6787 tilt/trim motor ships with the O-ring included, so no separate seal needs to be sourced for installation.

How much does the 18-6787 tilt/trim motor weigh? The Sierra 18-6787 tilt/trim motor weighs 3.5 pounds.

Is the Sierra 18-6787 a genuine Yamaha part or an aftermarket replacement? It is a Sierra-manufactured replacement part, not a genuine Yamaha part, built to meet or exceed the performance of the Yamaha 67F-43880-00-00 motor it replaces.

Will this tilt/trim motor work on a Yamaha F80 outboard? Yes, the 18-6787 is designed to fit the Yamaha F80 (1999 to 2003) 4-stroke outboard.

Is this motor for manual or power trim systems? The Sierra 18-6787 operates in manual mode as part of the outboard's hydraulic tilt/trim system.

What warranty covers the 18-6787 tilt/trim motor? The Sierra 18-6787 is covered by Sierra's Industry Leading Customer Satisfaction Warranty, which protects against defects in workmanship and materials for the useful life of the product.

Does the 18-6787 fit the Yamaha F100 outboard? Yes, this tilt/trim motor fits the Yamaha F100 (1999 to 2002) 4-stroke outboard.

What fuel type is the 18-6787 tilt/trim motor designed for? The Sierra 18-6787 is designed for gasoline-powered Yamaha 4-stroke outboard engines.

Where does the tilt/trim motor mount on the outboard? The 18-6787 is an engine-mounted tilt/trim motor that installs onto the outboard's trim system housing.