Mercury Premium 80W-90 Gear Lube, 1 Quart 858058K01

Mercury Premium 80W-90 Gear Lube 858058K01 (ss 802846A1) is a genuine Mercury OEM gear lubricant formulated for outboard applications up to 75HP. Designed to reduce friction, minimize wear, and protect internal gearcase components, this premium gear lube helps extend gearcase life while delivering reliable performance in demanding marine environments.

Compatible with the following:

• Mercury outboards up to 75HP
• Mariner outboards up to 75HP
• Other compatible lower units requiring SAE 80W-90 gear lubricant

This premium 80W-90 gear lube has been extensively tested to provide excellent protection against corrosion, excessive wear, and gear failure. Advanced emulsifiers help maintain lubrication and protect gears if water enters the gear housing, reducing the risk of costly damage.

Routine gear lube changes are an important part of preventative maintenance and help ensure dependable shifting, smooth operation, and long gearcase life. Always inspect drained gear lube for signs of water intrusion or metal particles during service.

This 1-quart bottle replaces previous part number 802846A1 and has also been superseded by 8M0222063, helping customers locate the correct OEM lubricant regardless of the part number referenced.

To Confirm Compatibility: Contact our team with your engine serial number at (727) 596-5929 before ordering.