Sierra 18-5877 Stator OMC OE #584643
Sierra 18-5877 Stator OMC OE #584643 Product Description
Keep your OMC outboard running smoothly with a reliable stator replacement that matches the original equipment performance. This stator delivers consistent electrical output for ignition and charging systems, ensuring your boat's engine fires up reliably even after long days on the water. Boat owners know the frustration of a failing stator—erratic idling, dim lights, or no-start conditions—and this direct-fit replacement eliminates those headaches without breaking the bank.
Why Your OMC Engine Needs a Dependable Stator
In the heart of your outboard's electrical system, the stator converts mechanical energy from the flywheel into the power that fuels spark plugs, battery charging, and accessories. Over time, exposure to saltwater, heat, and vibration wears it down, leading to output drops that cascade into bigger issues like weak spark or drained batteries. Upgrading to this stator restores full power generation, helping maintain optimal RPMs and fuel efficiency during trolling or high-speed runs.
- Precise Engineering: Matches OEM specifications for seamless integration, with durable windings that resist corrosion.
- Enhanced Reliability: Built to handle marine environments, reducing downtime and extending service intervals.
- Performance Boost: Provides stable voltage for consistent ignition timing, improving throttle response and overall engine health.
Finding the Right Fit for Your OMC Outboard
OMC engines from the Johnson and Evinrude lines rely on stators tailored to their 2-cylinder configurations. This replacement aligns perfectly with models featuring the referenced OE design, common in mid-range horsepower setups from the late 20th century. Always cross-check your engine's serial number against service manuals to confirm fitment, as variations exist across model years. It's a drop-in solution for many popular 65-150 HP engines, saving you hours of wiring headaches.
Quick Compatibility Check Tips
- Locate your engine's model and serial number plate.
- Inspect the existing stator for markings matching the OE reference.
- Consult exploded parts diagrams for your specific year and HP rating.
DIY Installation Made Straightforward
Swapping a stator doesn't require a marine mechanic if you're handy with basic tools. Start by disconnecting the battery, removing the flywheel cover, and carefully extracting the old unit. Clean mounting surfaces thoroughly to prevent vibration issues, then route the wiring harness exactly as original to avoid shorts. Torque specs are critical—overtightening can crack housings, while undertightening leads to misalignment.
Pro Installation Tips
- Work in a dust-free area to protect windings from contaminants.
- Use dielectric grease on connectors for waterproofing.
- Test output voltage with a multimeter post-install: aim for 12-14V AC at wide-open throttle.
- Break in the new stator with light use before pushing limits.
Ongoing Maintenance for Longevity
Prevent premature failure by flushing the engine after every saltwater trip, inspecting wiring for chafing annually, and monitoring rectifier output. A healthy stator can last seasons longer with simple habits like avoiding overloads from excessive accessories.
Spotting Stator Problems Before They Strand You
Listen for clues: sputtering at idle, battery that won't hold charge, or flickering tachometer. Use an ohmmeter to check resistance across windings—deviations from spec signal trouble. Voltage testing under load is the gold standard; low readings confirm the stator's the culprit, not the regulator. Replacing proactively during routine service keeps adventures uninterrupted.
The Sierra Advantage in Marine Parts
Sierra stands out by focusing on real-world durability over flashy claims. Their stators undergo rigorous testing for marine-specific stresses, from humidity to RPM extremes, earning trust from weekend warriors and charter captains alike. It's about peace of mind—knowing your electrical backbone won't quit mid-trip.
Frequently Asked Questions
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Sierra 18-5877 Stator OMC OE #584643 Technical Specifications
| Type: | |
|---|---|
| Vendor: |
Sierra Engine Parts |
| Weight: |
4.5 lb |
Sierra 18-5877 Stator OMC OE #584643 User Reviews
Sierra 18-5877 Stator OMC OE #584643 Shipping & Return
| Shipping Weight: |
4.5 lb |
|---|---|
| Box Sizes: |
2.00 (h) x 8.00 (w) x 10.00 (l) |
| Cubic Feet: |
160.0 |
| Returnable: |
Yes |
For detailed shipping policy please check our Shipping Policy and you can find our Return and Refund Policy here.



