Mercury Quicksilver Power Trim and Steering Fluid 8 oz 858074K01
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Mercury Quicksilver 858074K01 is genuine OEM Power Trim & Steering Fluid supplied in an 8 oz bottle for compatible Mercury, Mariner, Force, and MerCruiser power trim, power tilt, and power steering systems. It is a universal marine hydraulic fluid designed to support smooth trim and steering operation while helping protect internal hydraulic components, hoses, and seals.
Key Features
- Genuine Mercury Marine / Quicksilver OEM fluid.
- Part number 858074K01.
- Full OEM-style reference: 92-858074K01.
- Supplied in an 8 oz bottle.
- Designed for compatible power trim, power tilt, and power steering systems.
- Recommended for Mercury, Mariner, Force, and MerCruiser applications where this fluid is specified.
- Also suitable for applications requiring Type F transmission fluid, where specified.
- Universal hydraulic fluid designed to mix with hydraulic fluids in compatible power trim and steering systems.
- Helps protect seals and hoses.
- Helps prevent foaming, oxidation, and corrosion.
- Not intended for Mercury electric power steering systems requiring SAE 0W-30 synthetic power steering fluid.
- Not intended for non-power hydraulic helm steering systems requiring hydraulic helm steering fluid.
Application Compatibility
This is not an engine-specific product. It is selected by the boat’s trim, tilt, or power steering system fluid requirement.
Commonly used for:
- Mercury outboard power trim and tilt systems
- Mariner outboard power trim and tilt systems
- Force outboard power trim and tilt systems
- MerCruiser power trim systems
- MerCruiser power steering systems
- Marine hydraulic systems where Mercury / Quicksilver Power Trim & Steering Fluid is specified
Always confirm the correct fluid in the owner’s manual or service manual before use.
Fitment & System Compatibility Notice
Confirm the fluid requirement by the exact engine, drive, trim pump, or steering system service information before filling or topping off. Mercury power trim and steering fluid, SAE 0W-30 synthetic power steering fluid, hydraulic helm steering fluid, gear lube, and other marine hydraulic fluids are not automatically interchangeable.
When This Product Needs Replacement
Use this fluid when topping off, bleeding, flushing, or servicing a compatible power trim, power tilt, or power steering system. Fluid should be inspected if the trim or steering system is noisy, slow, inconsistent, aerated, leaking, contaminated, or after any hydraulic component has been replaced or disconnected.
Installation Notes
Use clean filling equipment and keep dirt, water, and air out of the hydraulic system during service. Follow the correct bleed or fill procedure for the trim pump or steering system being serviced. Do not mix with unknown or incompatible fluids, and inspect hoses, fittings, cylinders, reservoirs, and pump assemblies for leaks before returning the system to use.
Alternate / Superseded Part Numbers
Active and related OEM references include:
- 858074K01
- 92-858074K01
Related Mercury / Quicksilver power trim and steering fluid package references vary by bottle size, including:
- 858075K01 — 32 oz / 1 quart bottle
Parts Desk Insight
The key difference between the Mercury steering fluids is the system type. 858074K01 is for compatible power trim and power steering systems, while SAE 0W-30 synthetic steering fluid and hydraulic helm steering fluid serve different Mercury steering applications. Checking the system requirement first prevents the wrong fluid from being added.
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.