ARCO 12V Starter Solenoid for Mercury & MerCruiser β Isolated Base | SKU 57-SW097
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ARCO 12V Starter Solenoid for Mercury & MerCruiser β Isolated Base
A direct-replacement 12-volt starter solenoid with an isolated base for Mercury outboard and MerCruiser stern-drive engines. The solenoid is the electrical switch that delivers high-current power from the battery to the starter motor when you turn the key. When it fails, the engine wonβt crank β or youβll hear a single click with no starter engagement. This ARCO unit restores full starting function with a direct OEM-equivalent fit and no wiring modifications required.
Features
- 12-volt, isolated base design
- Direct replacement for Mercury and MerCruiser starter solenoid applications
- OEM-equivalent fit β no wiring modifications required
- Built for reliable performance in marine electrical environments
Compatible Applications
- Mercury outboard engines requiring a 12V isolated base starter solenoid
- MerCruiser stern-drive engines requiring a 12V isolated base starter solenoid
- Verify fitment using your existing OEM part number before ordering
Pairs Well With
- ARCO 12V Starter Solenoid for Mercury & MerCruiser β Isolated Base (SW054)
- ARCO 12V Starter Solenoid for Mercury & MerCruiser β Isolated Base (SW058)
- ARCO Heavy-Duty 12V Starter Solenoid for Mercury & MerCruiser β Isolated Base (SW058HD)
- ARCO 12V Starter Solenoid for Mercury & MerCruiser (SW109)
- ARCO Outboard Starter Motor β Mercury / Force 90β120 HP Sport Jet
Parts Desk Insights
Best suited for Mercury outboard and MerCruiser owners replacing a failed 12V isolated base starter solenoid. The isolated base design is required on engines where the solenoid mounting surface is not grounded to the engine block β using a non-isolated solenoid on these engines will cause electrical faults. We carry several Mercury/MerCruiser isolated base solenoid variants (SW054, SW058, SW058HD, SW097, SW109); confirm your existing OEM part number to select the correct unit for your application. If youβre unsure, contact us with your engine model and year and weβll help identify the right fit.
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 β 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 β 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.