Sierra 18-6779 Tilt and Trim Motor, Replaces OMC/Johnson-Evinrude 986280, for King Cobra Trim Systems

The Sierra 18-6779 is a tilt and trim motor built to replace the original equipment motor in King Cobra trim systems used in 1990 and 1994. This motor drives the hydraulic trim pump that raises and lowers the outdrive, letting the operator adjust drive angle for the best running attitude, quicker planing, and reduced bow steer. Each Sierra product is manufactured to meet or exceed the performance of the original equipment part it replaces, so the 18-6779 restores full tilt and trim function without a compromise in output or durability.

The motor is finished in white and uses a transom mount configuration consistent with the King Cobra trim pump assembly it is designed to service. It is rated for use in salt water environments, making it suitable for boats that see regular exposure to marine conditions. Each package includes one tilt and trim motor, ready to install in place of a worn or failed original unit.

Because the 18-6779 is a direct interchange for several OEM and aftermarket part numbers, it is a straightforward way to restore trim function on King Cobra-equipped boats without hunting for a discontinued original part. Installation follows the same mounting pattern and wiring as the original equipment motor it replaces.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-6779
• Weight: 4.69 pounds
• Color: White
• Mounting Type: Transom Mount
• Recommended Use: Salt Water
• Package Quantity: 1 motor
• UPC: 808282101220

Fitment

• King Cobra trim systems, 1990 and 1994

Replaces (OEM)

• OMC/Johnson-Evinrude 986280
• OMC Stern Drive 3853845
• Volvo Penta 3853945
• Mallory 9-18602
• ARCO 6250

Frequently Asked Questions

What does the Sierra 18-6779 fit? The Sierra 18-6779 is designed for use in King Cobra trim systems from 1990 and 1994.

Is the Sierra 18-6779 the same as OMC 986280? Yes, the 18-6779 is a direct interchange for OMC/Johnson-Evinrude 986280, built to meet or exceed the performance of that original equipment motor.

Does the 18-6779 replace Volvo Penta 3853945? Yes, Volvo Penta 3853945 is one of the OEM numbers the Sierra 18-6779 tilt and trim motor is designed to replace.

What is the ARCO equivalent of the Sierra 18-6779? ARCO 6250 is the cross-referenced equivalent for the Sierra 18-6779 tilt and trim motor.

How much does the 18-6779 tilt and trim motor weigh? The Sierra 18-6779 weighs 4.69 pounds.

What color is the Sierra 18-6779 motor? It is finished in white.

How is the 18-6779 mounted? The Sierra 18-6779 uses a transom mount configuration, matching the mounting setup of the King Cobra trim pump assembly it services.

Can the Sierra 18-6779 be used in salt water? Yes, the 18-6779 is rated for use in salt water applications.

How many motors come in the package? Each package of the Sierra 18-6779 includes one tilt and trim motor.

Is the Sierra 18-6779 genuine OEM or aftermarket? The 18-6779 is a Sierra aftermarket replacement motor, manufactured to meet or exceed the original equipment part it replaces, including OMC 986280 and Volvo Penta 3853945.

Does the 18-6779 replace Mallory 9-18602? Yes, Mallory 9-18602 is among the part numbers the Sierra 18-6779 tilt and trim motor is designed to replace.