GOOFIT
Starter Motor for Yamaha 20HP–40HP & Mercury / Mariner Outboards | OEM 65W-81800-00
Starter Motor for Yamaha 20HP–40HP & Mercury / Mariner Outboards | OEM 65W-81800-00
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GOOFIT Marine-Grade Electric Starter – 20HP to 40HP Multi-Fit Series
One motor, versatile reliability. The GOOFIT 12V Performance Marine Starter is a professional-grade replacement engineered for mid-range 4-stroke outboard engines. This high-torque motor is a cross-compatible solution designed to meet the exact performance standards of both Yamaha and Mercury/Mariner powerheads, ensuring your vessel is ready for the water with a single turn of the key.
Manufactured using high-corrosion-resistance alloys and premium internal components, this starter is built to withstand the humidity and salt-spray of the marine environment. Whether you are replacing a worn-out unit on a weekend fishing boat or a hardworking commercial tender, this motor offers the durability and "plug-and-play" convenience you need.
Product Compatibility
This motor is a direct replacement for the following 4-stroke outboard engines:
- Yamaha Outboards: 20HP, 25HP, 30HP, and 40HP models.
- Mercury / Mariner Outboards: 25HP, 30HP, and 40HP models.
- Yamaha OEM Cross-Reference: 65W-81800-00, 65W-81800-01, 65W-81800-02, 65W-81800-03.
- Mercury OEM Cross-Reference: 830308T, 859169T, 888151T, 893886T.
Key Technical Specifications:
- Voltage: 12V DC.
- Rotation: Standard Outboard Rotation.
- Installation: Simple bolt-on design with factory-matched wiring terminals.
- Build: Industrial-grade housing for maximum thermal stability.
Why Choose the GOOFIT Multi-Fit Marine Starter?
- Universal Compatibility: One of our most versatile units, specifically designed to bridge the gap between Yamaha and Mercury platforms, making it an essential spare for any boat owner.
- Superior Cranking Torque: Optimized to turn over mid-displacement 4-stroke pistons instantly, reducing the cranking time and preventing excessive battery drain.
- Ruggedized for the Sea: Features specialized internal seals and coatings that protect the armature from the oxidation that typically causes factory starters to fail in marine settings.
- Hassle-Free Replacement: Precision-manufactured to match the original footprint, allowing for a quick DIY installation with no special tools or modifications required.
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Fitment FAQ
Will this part fit my specific model and year?
This starter motor is intended for This motor is a direct replacement for the following 4-stroke outboard engines; Yamaha Outboards: 20HP, 25HP, 30HP, and 40HP models.; Mercury / Mariner Outboards: 25HP, 30HP, and 40HP models.; Yamaha OEM Cross-Reference: 65W-81800-00, 65W-81800-01, 65W-81800-02, 65W-81800-03.; Mercury OEM Cross-Reference: 830308T, 859169T, 888151T, 893886T.. It is best matched to original part number(s) 65W-81800-00, 65W-81800-01, 65W-81800-02, 65W-81800-03. Key physical/spec details from the product data include Voltage: 12V DC., 20HP, 40HP. Use the compatibility table and product photos together before ordering.
Do I need to match the OEM part number?
Yes. Match your original part number to 65W-81800-00, 65W-81800-01, 65W-81800-02, 65W-81800-03 before purchase. For this starter motor, also compare the OEM number, voltage, tooth count, rotation direction, mounting ears, bolt spacing, terminal type, and overall length. This is especially important for Yamaha/Mercury models because similar model names can use different parts by year or trim.
What models or situations does this part not fit?
Do not order this starter motor for machines outside the listed compatibility, or for units with different tooth counts, CW/CCW rotation, mounting ears, terminal locations, or voltage ratings. If your original part number does not cross-reference with 65W-81800-00, 65W-81800-01, 65W-81800-02, 65W-81800-03, treat the fitment as unconfirmed. Do not rely only on the model name or engine size.
What should I check before ordering?
Before ordering, compare your original part with the photos and check the OEM number, voltage, tooth count, rotation direction, mounting ears, bolt spacing, terminal type, and overall length. Confirm OEM/cross-reference number(s): 65W-81800-00, 65W-81800-01, 65W-81800-02, 65W-81800-03. Recheck listed specs such as Voltage: 12V DC., 20HP, 40HP. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.