Star Brite 18532 Marine Hydraulic Steering Fluid — 32 oz
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Marine Hydraulic Steering Fluid for Top-Offs and Single-System Fills
Star Brite 18532 is the same marine-grade ISO 15 hydraulic steering fluid as the gallon-size 18500 — in a 32 oz bottle sized for single-system fills, top-offs, and on-board spares. Engineered specifically for marine hydraulic steering systems, it is compatible with all hydraulic steering applications that specify an ISO 15 fluid, including rack-and-pinion and cylinder-based systems from leading marine steering manufacturers.
Key Benefits
- Formulated specifically for marine hydraulic steering systems
- Meets ISO 15 viscosity specification — compatible with all ISO 15 hydraulic steering applications
- Outstanding antioxidant performance validated in ASTM D2272 testing
- Superior anti-wear protection to extend pump and cylinder life
- Corrosion protection for internal system components
Also Available
- Star Brite 18500 Marine Hydraulic Steering Fluid — 1 Gal — gallon size for full system flushes, shops, and multi-boat service
Parts Desk Insights
The 32 oz size is the right recommendation for customers who need just enough fluid for a single-system top-off or a routine annual refill on one boat. Best use case: DIY boat owners keeping a bottle aboard for seasonal maintenance or emergency top-offs, and customers replacing a single steering component who need to refill after bleeding the system. For shops or customers doing a full flush, point them to the gallon size (18500) for better value. Always confirm the system manufacturer’s ISO 15 specification before recommending.
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.