Sierra Hi-Performance Gear-Reduction Starter – Mercury Outboards | 47-59131
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You have 30 days to request a return. All sale items are final sale.
Sierra Hi-Performance Gear-Reduction Starter – Mercury Outboards | 47-59131
Upgrade your Mercury outboard’s cranking performance with this Sierra hi-performance gear-reduction starter. Engineered to spin faster and draw less current than a standard replacement starter, it’s the right choice when you want more than just a like-for-like swap — particularly on larger Mercury V6 and V8 outboards where reliable cold-crank performance matters most.
Compatible Applications
- Mercury V6 and V8 outboard engines (refer to Sierra’s current application guide to confirm fitment for your specific engine model and year)
Key Features
- Gear-reduction design for faster cranking speed and lower amp draw
- Hi-performance upgrade over standard OEM-style starters
- Built to OEM specifications for direct-fit installation
- Ideal for larger Mercury outboards where reliable cold-start performance is critical
Parts Desk Insights
This is the starter to reach for when a standard replacement isn’t cutting it — particularly on high-compression Mercury V6 and V8 outboards that are hard on starters, or on boats with aging electrical systems where reducing current draw matters. The gear-reduction design spins the engine faster with less strain on the battery and wiring, which translates to more reliable starts in cold weather or after extended storage. If you’re also replacing the solenoid, pair this with the Sierra Starter Solenoid for Mercury Outboards (47-5816). For a standard-output alternative, see the Arco Replacement Starter for Mercury/Mariner 150–225 HP.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.