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Sierra 18-5605 Outboard Starter for Mercury & Mariner 40-50 HP

Manufacturer

Picture for manufacturer Sierra

Part Number

18-5605
14 reviews
Sale Price

$214.50

In Stock (5)

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Usually delivered within 2 days

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No Hassle Returns

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-5605 is a replacement electric starter for Mercury and Mariner outboard engines. Designed as a direct drop-in replacement for OEM Mercury part numbers 50-73521, 50-73521T, and 50-898265005, this starter delivers reliable cranking performance for 40–50 HP, 4-cylinder outboard applications.

Sierra's 18-56 series starters incorporate several design improvements over standard starters to maximize longevity and ease of installation in demanding marine environments.

Key Features:

  • Enhanced Connectivity: Superior connection between the solenoid and commutator brushes for consistent starting
  • Improved Durability: Updated planetary gear and clutch gear spring to maximize lifespan and reliability
  • Optimized Performance: Updated solenoid design utilizing higher quality materials
  • Easier Installation: Increased battery terminal length for simpler setup
  • Water Resistance: Strategically integrated seals to reduce water intrusion
  • 10-Tooth Drive Gear — 12V, counter-clockwise (CCW) rotation

OEM Cross-Reference:

  • Mercury Marine: 50-73521, 50-73521T, 50-898265005
  • Arco: 5379
  • Mallory: 9-15025

Sierra is the market leader in aftermarket marine engine parts, offering a comprehensive product line backed by an unsurpassed customer satisfaction warranty covering parts and labor.

great company to buy from. called them up to find an AFR gauge set. while the one i had my eye one was no longer available, they worked with me to find another one that fit my application and visual requirements. thanks autoplicity!

Easy and quick!

Good prices. Fast shipping. Fit my 2011 Dodge 3500 Mega Cab Dually perfect. Thanks.

I was asked if the product I was purchasing was needed by a specific date in order to complete a project on time. Autoplicity responded and had the product to me a day earlier than I asked for without additional cost to me. I will order from them again.

easy to find item I wanted and at a good price.

My order for a "Thule" bike rack went thru like silk. Was received (1) day early. Would recommend "Autoplicity" to anyone. Best buy I could find on line.<br><br>Customer in Kokomo, IN

it was quick and easy

QUICK AND EASY

Really wish I wouldn't had paid for two day shipping. It was a totally waste of $25.

Great Price -- Better Than AMAZON ! Great Delivery -- Great email with status of order etc.

Simple and fast checkout

Very cheap place to get name brand parts! Fast shipping!

Best prices of any other online auto parts merchant.<br><br>Communication of the order status and was very prompt and accurate and professional.<br><br>I wouldnt hesitate to do business again with autoplicity -- my go to site next time I need auto parts!

Very quick on shipping, at a great price.

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