Sierra Remanufactured Marine Starter – MerCruiser 4-Cyl | 47-5907
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Sierra Remanufactured Marine Starter – Opposite Rotation | 47-5907
Keep your inboard running strong with this professionally remanufactured marine starter from Sierra. Engineered as a top-mount, rear-entry unit for opposite-rotation GM and Ford-based inboard engines, it delivers reliable cold-crank performance season after season. It will also replace standard-rotation starters on compatible applications — giving you added flexibility when sourcing a replacement.
Compatible Applications
- MerCruiser 4-Cylinder 165, 170, 180, 190, 470, 485, 488
- Replaces Mercury/MerCruiser OEM: 50-72550A2, 50-79604A3, 50-97499A2, R4
- Replaces OMC: 981289, 982202
- Replaces Crusader: 42091
Key Features
- Professionally remanufactured to OEM specifications
- Top-mount, rear-entry design for direct-fit installation
- Opposite-rotation configuration — also replaces standard-rotation starters
- Does not replace non-starter-mounted solenoids
Parts Desk Insights
This starter is the go-to replacement for aging or failed starters on MerCruiser 4-cylinder inboard engines commonly found in runabouts and ski boats from the 1970s–1990s. If your engine cranks slowly, clicks but won't turn over, or has a starter that's been rebuilt multiple times, this is the right upgrade path. Note that this unit does not include or replace a remote-mounted solenoid — if your solenoid is also suspect, pair it with a compatible Mercury MerCruiser Starter Solenoid or browse our full selection of starter solenoids for Mercury & MerCruiser.
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.