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๐ฅ๏ธ Steer with confidence โ the official fluid of marine pros!
Quicksilver 858078Q01 Hydraulic Helm Steering Fluid is a 32 oz. bottle of premium, Mil Spec H5606G certified fluid designed specifically for non-power hydraulic steering systems. Engineered to meet Mercury Marine OEM standards, it ensures optimal performance and longevity for MerCruiser and SeaStarยฎ helm systems. Trusted for over 65 years, this ultra-pure fluid delivers smooth, reliable steering in demanding marine environments.





| ASIN | B002IV4LP4 |
| Best Sellers Rank | #12,651 in Automotive ( See Top 100 in Automotive ) #16 in Power Steering Fluids |
| Brand | Quicksilver |
| Brand Name | Quicksilver |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 513 Reviews |
| Global Trade Identification Number | 00745061039490 |
| Included Components | 1 quart bottle of Hydraulic Steering Fluid |
| Item Form | Liquid |
| Item Weight | 16 ounces |
| Liquid Volume | 946 Milliliters |
| Manufacturer | Quicksilver |
| Material | Various Materials |
| Model Number | 858078Q01 |
| Number of Items | 1 |
| Package Information | Bottle |
| Part Number | 858078Q01 |
| Recommended Uses For Product | Hydraulic Oil |
| Specific Uses For Product | Hydraulic steering systems, Marine steering systems |
| UPC | 745061039490 |
| Unit Count | 32.0 Fluid Ounces |
| Viscosity | 12.5 to 16.3 cSt at 100ยฐC (212ยฐF) |
P**T
My Handy Man
This was for my husbands was a good price on Amazon. We just changed his boat stealing over to hydraulic steering.
G**C
Dependable quality
You just can't beat the quality of name brand hydraulic fluid. The tolerances of hydraulic pistons cannot accept any impurities in the fluid that makes them work and this name brand fluid is always pure.
C**E
Only brand we buy!
Husband uses for his boat. This is the only brand he buys. Weโve had our boat for 17 years, and this product has helped maintain it all these years.
D**.
It's hydraulic fluid.
Filled out the hydraulics for the steering, not sure what they had originally in it but this seemed to mix well with it and not foam or cause issues.
J**S
Good
Works like it should Delivered early
T**X
Meets Mil Spec H5606G
Meets Mil Spec H5606G. That's all you need to know. One bottle was enough to manually flush and fill steering on a 17' arima sea explorer outboard. Fluid is red or pink like atf. When the color changed from yellow to red, I knew I was done flushing a line.
W**R
Excellent marine hydraulic fluid
Good but pricey. Shipping on time Would buy again if needed.
K**E
Great
Great
Trustpilot
3 weeks ago
3 weeks ago