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Power Trim Relay - Sierra Marine Engine Parts - 18-5729 (118-5729)

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0.07 LBS
Alternate Products SKU:
"852-9809", "300-26073", "R211", "18211", "18-5729"
Manufacturer Part Number (MPN):

Power Trim Relay - Sierra Marine Engine Parts - 18-5729 (118-5729)


When the input (coil) is appropriately stimulated, a power relay utilizes an electromagnet to open or close a circuit. With a typically rated impulse voltage of 4 or 6 kV, they offer a high degree of isolation between the control signal (coil) and the output (contacts).

A power relay may only have usually open (NO) contacts or change-over contacts that are both normally open (NO) and normally closed (NC). A larger contact gap when off, which is necessary for some applications, may typically be achieved when NO contacts only are provided. When it comes to switching high currents, power relays are dependable issue solutions.

Key Features:

  • Mercury 87-18211 and Arco R211 are interchangeable with the Sierra 18-5729 Power Trim Relay.
  • The original equipment part that each Sierra product replaces is met or exceeded by them.
  • For: 35 (2 cylinder) (with Ram Trim) 0C159200 and Up
  • For: 0B122920-0D000749 60 (3 cyl) (w/ Ram Trim)
  • Type of Fit: Universal Fit


  • SKU: 18-5729
  • UPC: 808282100735
  • Weight: 0.07 LBS
  • Alternate Products SKU: 852-9809, 300-26073, R211, 18211, 18-5729
  • Manufacturer Part Number (MPN): 118-5729

For: 35 (2 cyl)(w/ Ram Trim) 0C159200 & Up, For: 60 (3 cyl)(w/ Ram Trim) 0B122920-0D000749

This product replaces:

    586147, 586224, 47-5729, 80828210073, 808282100735, 18-6267


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Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.)

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.

Need help? We're available at+1 (800) 664-8116 - Email us
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