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Power Trim Tilt Relay for Mercury/Mariner Outboards – Replaces 882751A1, 828151A1, 828151 and 882751A2

Regular price $18.49

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Orders are typically processed within 1–2 business days.


U.S. orders usually arrive within 6–15 days, depending on stock location and destination.


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If you have any questions, feel free to email us at info@seasierra.com, and we’ll get back to you within 20–36 hours.

Product Details

This aftermarket Power Trim Tilt Relay is a replacement relay for many Mercury and Mariner outboard power-trim applications. Sierra catalog information identifies the corresponding relay as a shrouded trim relay used on most 2-stroke and 4-stroke non-Verado engines. Confirm the original relay, connector arrangement, engine application and serial-number range before ordering.

This relay replaces the following documented Mercury references: 882751A1, 828151A1, 828151 and 882751A2. Sierra aftermarket reference 18-5849 is also associated with these numbers.

  • Designed for power-trim relay replacement applications.
  • Shrouded relay style as identified in the referenced marine-parts catalog.
  • Suitable for many 2-stroke and 4-stroke non-Verado Mercury/Mariner applications when the replacement numbers and physical configuration match.
  • Aftermarket replacement component; not manufactured by Mercury Marine.

Part Number Matrix

Use these references to compare the relay with the part removed from your engine. A matching number alone does not replace verification of the connector and application.

Brand or Reference Part Number Relationship
Mercury Marine 882751A1 Replacement reference
Mercury Marine 828151A1 Replacement reference
Mercury Marine 828151 Replacement reference
Mercury Marine 882751A2 Replacement reference
Sierra 18-5849 Aftermarket catalog reference

Engine Compatibility

The documented application is a power-trim relay used on most Mercury and Mariner 2-stroke and 4-stroke non-Verado outboard engines. The available catalog reference does not establish one universal horsepower, year or serial-number range for every engine.

Brand Application Stroke Condition Replacement References
Mercury Power-trim relay applications 2-Stroke Most non-Verado applications; verify model and serial number 882751A1, 828151A1, 828151, 882751A2
Mercury Power-trim relay applications 4-Stroke Most non-Verado applications; verify model and serial number 882751A1, 828151A1, 828151, 882751A2
Mariner Power-trim relay applications 2-Stroke or 4-Stroke Verify the original relay and engine application before ordering Confirm against the original part

Important: Do not assume compatibility with Verado models, sterndrives, Force outboards or other brands solely because the relay has a similar appearance. Check the original part number and connector configuration.

Technical Specifications

Product Type
Power trim tilt relay
Relay Style
Shrouded trim relay
Application
Marine outboard power-trim systems
Product Category
Aftermarket replacement
Documented Replacement Numbers
882751A1, 828151A1, 828151 and 882751A2

Electrical ratings, terminal layout, dimensions, mounting style, contact material and weight are not specified in the available application reference. Compare the replacement with the original relay before installation.

What’s in the Box

  • 1 x Power trim tilt relay

Installation Notes

  1. Disconnect the boat battery before working on the trim circuit.
  2. Locate the existing power-trim relay and compare its part number, housing and connector arrangement with the replacement.
  3. Photograph or note the wiring orientation before disconnecting the old relay.
  4. Remove the old relay from its mounting position without pulling on the wiring.
  5. Install the replacement in the same position and connect the wiring securely.
  6. Reconnect the battery and test trim operation in both directions.
  7. If the relay, connector or wiring differs, stop and consult a qualified marine technician before applying power.

Troubleshooting & FAQ

How do I know if my trim relay is failing?

Possible symptoms include clicking without motor movement, trim operation in only one direction, intermittent operation or a completely unresponsive trim system. Test the circuit and relay according to the engine service procedure before replacing parts.

Will this fit my specific engine?

The documented application covers many Mercury and Mariner 2-stroke and 4-stroke non-Verado power-trim systems. Because application details can vary by model and serial number, compare the original relay and verify the engine application before ordering.

Which part numbers does this relay replace?

The documented replacement references are Mercury 882751A1, 828151A1, 828151 and 882751A2. Sierra 18-5849 is an aftermarket catalog reference for this relay application.

Is this an OEM Mercury part?

No. This listing is for an aftermarket replacement relay. Mercury and Mariner names and part numbers are used only to identify the intended application and replacement references.

Can I use it on a Verado engine or sterndrive?

Do not assume so. The available application reference describes most non-Verado Mercury/Mariner outboard engines and does not establish compatibility with Verado models or sterndrives. Verify the exact original relay before purchase.

Shipping speed & cost

Standard shipping is free where offered. Available delivery methods and estimated transit times are shown at checkout and may vary by destination.

Warranty & returns

Warranty and return eligibility are governed by the seller’s current policy. Contact support with your order details if the part arrives damaged or an issue occurs under normal use.

Safety & Important Information

  • Disconnect the battery before servicing electrical components.
  • Verify the part number, connector arrangement, physical configuration and engine serial-number application before purchase.
  • Do not install the relay if the wiring or terminal arrangement differs from the original.
  • This is an aftermarket replacement, not an OEM component.
  • Professional installation is recommended if you are not familiar with marine electrical systems.

About Sea Sierra

  • Marine Replacement Parts — Practical replacement components for repair and maintenance applications.
  • Application-Focused Listings — Reference numbers and fitment information are provided to help compare your original part.
  • Customer Support — Contact our team with your engine model, serial number and original part details when application assistance is needed.

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