--- product_id: 119646194 title: "Quicksilver 858078Q01 Hydraulic Helm Steering Fluid - 32 Oz. Bottle" brand: "quicksilver" price: "$72.63" currency: USD in_stock: true reviews_count: 8 category: "Quicksilver" url: https://www.desertcart.us/products/119646194-quicksilver-858078q01-hydraulic-helm-steering-fluid-32-oz-bottle store_origin: US region: United States of America --- # 32 oz premium hydraulic fluid Meets Mil Spec H5606G OEM spec for Mercury & Mariner Quicksilver 858078Q01 Hydraulic Helm Steering Fluid - 32 Oz. Bottle **Brand:** quicksilver **Price:** $72.63 **Availability:** ✅ In Stock ## Summary > 🛥️ Steer with confidence—premium fluid for flawless marine control! ## Quick Answers - **What is this?** Quicksilver 858078Q01 Hydraulic Helm Steering Fluid - 32 Oz. Bottle by quicksilver - **How much does it cost?** $72.63 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/119646194-quicksilver-858078q01-hydraulic-helm-steering-fluid-32-oz-bottle) ## Best For - quicksilver enthusiasts ## Why This Product - Trusted quicksilver brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Universal Compatibility:** Perfect for non-power hydraulic steering systems including MerCruiser and SeaStar® by Teleflex®, making it the go-to fluid for serious boaters. - • **Trusted Legacy of Quality:** Backed by Quicksilver’s 65+ years of marine industry leadership, this fluid guarantees protection, longevity, and peace of mind for your vessel. - • **Mil-Spec Certified Reliability:** Meets rigorous Mil Spec H5606G requirements, delivering military-grade durability and consistent fluid performance under extreme marine conditions. - • **Optimal Viscosity for Smooth Steering:** Maintains a stable viscosity range (12.5 to 16.3 cSt at 100°C) to ensure responsive, effortless steering no matter the water conditions. - • **Precision Engineered for Marine Excellence:** Specifically formulated to meet Mercury Marine OEM standards, ensuring flawless compatibility and peak performance in your hydraulic helm steering system. ## Overview Quicksilver 858078Q01 Hydraulic Helm Steering Fluid is a 32 oz bottle of high-performance hydraulic oil designed for non-power steering systems. It meets Mil Spec H5606G and Mercury Marine OEM specs, ensuring superior compatibility and durability for MerCruiser, Mariner, and SeaStar® hydraulic helm systems. Trusted by boaters for over 65 years, this fluid offers optimal viscosity for smooth, reliable steering in demanding marine environments. ## Description Hydraulic Helm Steering Fluid 858078Q01 is for use in non‑power hydraulic steering systems such as, MerCruiser compact hydraulic helm steering systems and bolt‑on steering systems such as SeaStar® by Teleflex®, Inc. See your owner's manual for requirements and specifications. The Quicksilver brand is the leader in delivering uncompromising engine oils, parts and accessories to the marine industry for over 65 years. Quicksilver is the premier supplier of Mercury Marine Original Equipment replacement engine parts, oils, and accessories, but also works to serve all Original Equipment brands in the marine and powersports industries. It has earned a loyal following by providing the highest quality products that are tested through some of the most rigorous environments and testing procedures. No aftermarket company comes close to the level of research and design as Quicksilver; buying Quicksilver is buying performance, protection and peace of mind. Review: My Handy Man - This was for my husbands was a good price on desertcart. We just changed his boat stealing over to hydraulic steering. Review: 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. ## Features - For use in non‑power hydraulic steering systems - Meets Mil Spec H5606G - Produced to meet Mercury Marine original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser sterndrive ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002IV4LP4 | | Best Sellers Rank | #17,954 in Automotive ( See Top 100 in Automotive ) #20 in Power Steering Fluids | | Brand | Quicksilver | | Brand Name | Quicksilver | | Container Type | Bottle | | Customer Reviews | 4.8 out of 5 stars 507 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 100°C (212°F) | ## Product Details - **Brand:** Quicksilver - **Item Weight:** 1 Pounds - **Liquid Volume:** 946 Milliliters - **Material:** Various Materials - **Package Information:** Bottle ## Images ![Quicksilver 858078Q01 Hydraulic Helm Steering Fluid - 32 Oz. Bottle - Image 1](https://m.media-amazon.com/images/I/71tiycLb2tL.jpg) ![Quicksilver 858078Q01 Hydraulic Helm Steering Fluid - 32 Oz. Bottle - Image 2](https://m.media-amazon.com/images/I/71eB6y7Ti8L.jpg) ![Quicksilver 858078Q01 Hydraulic Helm Steering Fluid - 32 Oz. Bottle - Image 3](https://m.media-amazon.com/images/I/71f2hJdIOtL.jpg) ![Quicksilver 858078Q01 Hydraulic Helm Steering Fluid - 32 Oz. Bottle - Image 4](https://m.media-amazon.com/images/I/71a--m-ruoL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ My Handy Man *by P***T on January 21, 2026* This was for my husbands was a good price on Amazon. We just changed his boat stealing over to hydraulic steering. ### ⭐⭐⭐⭐⭐ Dependable quality *by G***C on July 12, 2025* 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. ### ⭐⭐⭐⭐⭐ Only brand we buy! *by C***E on November 2, 2025* Husband uses for his boat. This is the only brand he buys. We’ve had our boat for 17 years, and this product has helped maintain it all these years. ## Frequently Bought Together - Quicksilver 858078Q01 Hydraulic Helm Steering Fluid - 32 Oz. Bottle - Quicksilver 858075Q01 Power Trim and Steering Fluid - 32 Oz. Bottle --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/119646194-quicksilver-858078q01-hydraulic-helm-steering-fluid-32-oz-bottle](https://www.desertcart.us/products/119646194-quicksilver-858078q01-hydraulic-helm-steering-fluid-32-oz-bottle) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-20*