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Sierra 18-6422 Outboard Starter Motor for Yamaha 40/50/Pro 50 HP

Manufacturer

Part Number

18-6422
Sale Price

$237.68

1 left at this price

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Usually delivered within 2 days

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FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-6422 is a marine-grade replacement starter motor designed for select Yamaha 40 and 50 HP outboard engines. Built to meet or exceed OEM specifications, this starter delivers reliable ignition performance in the demanding marine environment.

Key Features:

  • Meets SAE J1171 and ISO 8846 marine-grade standards
  • High-quality magnets and field coils for improved starting torque
  • Double-sealed housing for enhanced moisture and corrosion resistance
  • Premium brushes for extended service life
  • Direct OEM replacement — no modifications required

Replaces OEM Part Numbers:

  • Yamaha: 6H4-81800-10-00, 6H4-81800-11-00, 6H4-81800-12-00
  • Arco: 3425

Sierra backs this starter with their industry-leading Customer Satisfaction Warranty, covering defects in workmanship and materials for the useful life of the product.

Products specifications

Compatibility

Fits 40HP (84-86)50HP (86-88)Pro 50 (1987-88). Replaces 6H4-81800-12.

Type

Starters

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Good

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Good

Great Prices way cheaper than ebay or amazon great selection of products.

tried customer service to order they cant seem to find my shipping addres info, i log into site and placed order site was haveing problems going into differnt areas to get parts.

Ordered it Friday had it at my door on Wednesday! They also had the cheapest prices of all reputable sellers.

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