MERCURY Outboard Power Relay 87-18211 18-5729FOR Mercury/mariner

( Model: 18-5729 ), ( Compatible Product: Other Compatible Product ), ( Warranty: 90 Day ), ( Custom Bundle: No ), ( Type: Outboard )

Review MERCURY Aftermarket Mercury/mariner Outboard Replacement Power Trim Relay fits SIERRA MARINER

The 87-18211 18-5729 Outboard Power Relay from Sierra is an essential component for the proper functioning of Mercury and Mariner outboard motors. This relay ensures that the necessary electrical power is delivered to various systems and components of the outboard motor in a controlled and efficient manner.

The relay is designed with a robust and durable construction, making it ideal for the demanding marine environment. It features a marine-grade plastic housing that is resistant to water, corrosion, and UV rays. The contacts are made from high-quality materials that can handle heavy electrical currents, ensuring reliable performance even under heavy load.

The 87-18211 18-5729 Outboard Power Relay is a multi-functional relay, capable of handling multiple electrical circuits. It comes with a total of 14 terminals, including 12 NO (Normally Open) terminals and 2 NC (Normally Closed) terminals. This allows the user to connect various electrical systems and components to the relay, such as the ignition system, fuel pump, and lighting system.

The relay is easy to install, with clear and concise labeling on the terminals to ensure proper connection. It can be mounted in a variety of locations, thanks to its compact size and versatile mounting options. The relay also comes with a built-in diode, which protects the electrical systems from voltage spikes and surges.

The Sierra 87-18211 18-5729 Outboard Power Relay is a high-performance and reliable solution for powering various electrical systems on Mercury and Mariner outboard motors. It is built to withstand the harsh marine environment and ensures reliable and efficient power delivery to essential systems and components. With its easy installation and versatile mounting options, this relay is a must-have accessory for any outboard motor enthusiast.

The 87-18211 18-5729 outboard power relay is a component used in the electrical system of Mercury and Mariner outboard motors. This relay ensures that the necessary electrical power is supplied to the motor's accessories, such as the ignition system and the lighting, when the engine is running. Let's examine the potential pros and cons of purchasing this part:

1. Enhanced Convenience: By using a power relay, the electrical load is separated from the engine's electrical system. This means that the accessories will continue to function even when the engine is not running or idling, providing added convenience for boaters.

2. Improved Reliability: A dedicated power relay can help prevent electrical issues that may arise due to the high electrical demand placed on the engine's electrical system when multiple accessories are in use. By isolating the electrical load, you can reduce the risk of electrical component damage and potential system failures.

3. Enhanced Safety: A power relay can help prevent potential safety hazards, such as electrical shorts or malfunctions, which can lead to fire or other accidents.

1. Cost: The price of the 87-18211 18-5729 outboard power relay may seem high compared to other boat parts. However, considering the potential benefits, such as increased convenience, improved reliability, and enhanced safety, the investment may be worthwhile for serious boaters.

2. Installation Complexity: Installing a power relay may require some technical know-how and time. However, the process is generally straightforward, and many boaters may be able to complete the installation themselves with the help of online resources and instructions from the manufacturer.

The 87-18211 18-5729 outboard power relay can be a valuable addition to the electrical system of a Mercury or Mariner outboard motor. By providing enhanced convenience, improved reliability, and increased safety, this component can help ensure a more enjoyable and problem-free boating experience. While the upfront cost may seem high, the long-term benefits and peace of mind it offers may make it a worthwhile investment for serious boaters.

If you are a serious boater and want to ensure a reliable and convenient electrical system for your Mercury or Mariner outboard motor, consider investing in the 87-18211 18-5729 outboard power relay. It is a proven solution for managing the electrical load and reducing the risk of electrical issues and potential safety hazards. With proper installation and maintenance, this component can help provide you with a more enjoyable and worry-free boating experience.

Details:

Characterized by a combination of numbers, letters, and/or symbols. Sierra Mercury/Mariner Outboard 87-18211 Replacement Power Trim Relay 18-5729, Manufacturer Part Number MPN is a product identifier given by the manufacturer, can be same as model number, part or code.

part #: 185729 prices

• $12.25-$12.90

specifications vesselveep:

• for models: Sierra, Mariner
• for makes: Mercury
• model#: 18-5729
• compatible product: Other Compatible Product
• warranty: 90 Day
• custom bundle: No
• type: Outboard

offer vesselveep:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• best offers: True
• started: August 19, 2025

payments vesselveep:

• other
• credit card: Mastercard
• wallet: Apple-pay

seller vesselveep:

• rating: 98.9%
• # reviews: 2029
• city: New Jersey

general vesselveep:

• Parts Accessories > Boat Parts > Other
• condition: New

shipping vesselveep:

• type: Fixed
• class: Standard
• transit: 3-7 Days
• carrier: USPS
• service: USPS First Class
• cost: $0.00

returns vesselveep:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

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