Sierra Tilt/Trim Motor 18-6281, Replaces OMC 438786, 439937, 5005254

The Sierra 18-6281 is a 12 volt tilt/trim motor built as a direct replacement for outboard tilt/trim systems that use OMC 438786, 439937, or 5005254. It features a durable plastic housing and includes the O-ring needed for installation, so the unit is ready to mount without sourcing a separate seal. This motor drives the hydraulic pump that raises and lowers the outboard, restoring smooth, reliable tilt/trim operation when the original motor has failed, stalled, or become noisy. The plastic housing constructed for this motor is designed to resist the corrosion and moisture exposure typical of a marine environment while keeping the unit lightweight. As a Sierra part, the 18-6281 is manufactured to match OEM fit, form, and function for the OMC cross-reference numbers it replaces, making it a straightforward swap for boat owners and marine technicians replacing a worn or seized trim motor. All Sierra parts are backed by Sierra's standard customer satisfaction warranty. Whether you are restoring full trim range on an outboard or replacing a motor that no longer responds, the 18-6281 is built to bolt in using the original electrical connections and mounting points associated with the OEM units it replaces.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-6281
• Product Name: Tilt/Trim Motor
• Voltage: 12 Volts
• Material: Plastic
• Housing: Plastic housing
• Included Hardware: O-ring included
• Weight: 3.6 pounds

Replaces (OEM)

• 438786
• 439937
• 5005254

Frequently Asked Questions

What does the Sierra 18-6281 tilt/trim motor replace? The Sierra 18-6281 is a direct replacement for OMC tilt/trim motors carrying part numbers 438786, 439937, and 5005254.

Is an O-ring included with this trim motor? Yes, the O-ring needed for installation is included with the Sierra 18-6281 tilt/trim motor, so no separate seal purchase is necessary.

What voltage does the 18-6281 trim motor run on? This tilt/trim motor operates on 12 volts.

What is the housing made of? The Sierra 18-6281 has a plastic housing designed to hold up in a marine environment while keeping the unit lightweight.

How much does the Sierra 18-6281 weigh? The Sierra 18-6281 tilt/trim motor weighs 3.6 pounds.

Is the Sierra 18-6281 a genuine OEM part or an aftermarket replacement? The 18-6281 is a Sierra-manufactured aftermarket replacement engineered to match the fit, form, and function of the OMC 438786, 439937, and 5005254 motors it replaces.

Does the 18-6281 come with a warranty? Yes, the Sierra 18-6281 tilt/trim motor is covered under Sierra's standard customer satisfaction warranty, like all Sierra parts.

What symptoms indicate the tilt/trim motor needs replacement? A trim motor that fails to run, runs slowly, or no longer raises or lowers the outboard typically needs replacement with a unit like the Sierra 18-6281.

What is included in the box with the 18-6281? The package includes the Sierra 18-6281 tilt/trim motor and the O-ring required for installation.

Can I cross-reference this motor using my old OMC part number? Yes, if your old tilt/trim motor is stamped 438786, 439937, or 5005254, the Sierra 18-6281 is the correct direct replacement.