Mercury Quicksilver High Performance Gear Lube 5 Gallon 858008K01
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Mercury Quicksilver High Performance Gear Lube 858008K01 (8M0222055) is a genuine OEM high performance gear lubricant formulated specifically for Mercury MerCruiser sterndrives, Mercury and Mariner outboard gearcases, and Bravo drive applications. This 5 US gallon (18.9 L) pail is the bulk service size for marine dealers, service centres, and high-volume operators.
Key Features
- Genuine Mercury Quicksilver OEM gear lube — factory-specified formulation.
- Part number 858008K01, current reference 8M0222055.
- 5 US gallon (18.9 L) bulk pail — ideal for dealer and service centre use.
- Formulated for Mercury MerCruiser sterndrives and outboard lower units.
- Provides superior gear protection, corrosion resistance, and water separation.
- Engineered for the high-load, high-RPM demands of marine gearcase operation.
- Protects against wear, pitting, and corrosion in saltwater and freshwater environments.
Applications
- Mercury MerCruiser Alpha One, Bravo One, Bravo Two, Bravo Three sterndrives.
- Mercury and Mariner outboard lower units (all HP ranges requiring HP gear lube).
- Any MerCruiser or Mercury application specifying High Performance Gear Lube.
Specifications
- Part Number: 858008K01 / 8M0222055
- Size: 5 US Gallons (18.9 L)
- Type: High Performance Gear Lube
- Brand: Mercury Quicksilver
- OEM Quality: Factory specification
Service Notes
Always verify the correct gear lube specification for your specific drive or outboard model before servicing. Some MerCruiser and Mercury applications require standard gear lube rather than high performance — confirm via your factory service manual or serial number lookup. Change gear lube at factory-recommended intervals and inspect for water contamination (milky appearance) at every service.
Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.