Telays and Solenoids

Relays and solenoids are critical components for the proper functioning of the electrical system in Evinrude, Johnson, BRP, and OMC marine engines. These devices play a fundamental role in starting the engine and protecting electrical circuits from overloads and short circuits. The starter solenoid, in particular, acts as a high-current electromagnetic switch, allowing the starter motor to be supplied with the power needed to start the engine. A malfunctioning relay, on the other hand, can cause a range of problems, including starting difficulties, engine failure, electrical system malfunctions, and even damage to other components.

Nautica Basile understands the importance of using original spare parts or high-quality aftermarket alternatives to ensure compatibility, reliability, and long-term durability. While cheaper aftermarket parts may seem more economical at first, they often don't meet the manufacturer's specifications and can cause significant damage to the engine and electrical system. Choosing original or certified equivalent parts is an investment in the longevity and performance of your marine engine.

Before making a purchase, it is essential to carefully verify the part number in your engine's service manual. This will ensure you order the correct component and avoid purchasing errors. If you have any questions or need assistance, please don't hesitate to contact our customer service team. Our experienced technicians are available to provide you with personalized technical advice and help you identify the most suitable spare part for your needs.

Basile Workshop Tip

* Replace the starter solenoid immediately if you hear a persistent metallic noise during starting.
* Always check the battery voltage before replacing the solenoid, as a weak battery can cause symptoms similar to those of a faulty solenoid.
* Carefully inspect the solenoid's electrical connections, ensuring they are clean, free of corrosion, and securely tightened. A loose or corroded connection can cause starting problems.
* Use a multimeter to check the continuity of the solenoid and relay before proceeding with replacement.

• Fast and secure shipping throughout Italy.


• Warranty on original and high-quality aftermarket parts.


• Pre- and post-sales technical support from experienced technicians.

You might also be interested in our marine-grade electrical cables, circuit protection fuses, and safety switches to complete the maintenance and upgrade of your electrical system.

Is the solenoid on my 1998 Evinrude 40 HP the same as the one on the 50 HP?

No, solenoids can vary significantly depending on the engine's displacement, year of manufacture, and specific model. Always verify the part number in your service manual or contact our customer service team, providing the exact model of your engine.

How can I test if the solenoid is faulty?

The safest and most effective way to test a solenoid is to use a multimeter to check for continuity and voltage. If there is no continuity when the solenoid is powered, or if the voltage is insufficient, it is likely faulty. Alternatively, an experienced mechanic can temporarily bypass the solenoid to verify if the starter motor is working correctly (a risky maneuver, to be performed with extreme caution).

What are the symptoms of a faulty starter relay?

Symptoms of a faulty starter relay can include difficulty starting the engine, strange noises (such as clicks or buzzes) coming from the relay during starting, engine failure, continuously blowing fuses, or a sudden voltage drop in the electrical system.

What are power relays and what are they used for?

Power relays are electromagnetic switches used to control high-current circuits with a low-current signal. In a nautical context, they are often used to power devices such as bilge pumps, navigation lights, and other electrical accessories, protecting the main switch from overloads.

Where can I find the part number for the replacement relay or solenoid?

The part number is generally indicated in the engine's service manual. Alternatively, you can find the number directly on the component itself (often printed or engraved). If you cannot find the number, contact our customer service team, providing the model and year of your engine.

Is the solenoid on my 1998 Evinrude 40 HP the same as the one on the 50 HP?

No, solenoids can vary significantly depending on the engine's displacement, year of manufacture, and specific model. Always verify the part number in your service manual or contact our customer service team, providing the exact model of your engine.

How can I test if the solenoid is faulty?

The safest and most effective way to test a solenoid is to use a multimeter to check for continuity and voltage. If there is no continuity when the solenoid is powered, or if the voltage is insufficient, it is likely faulty. Alternatively, an experienced mechanic can temporarily bypass the solenoid to verify if the starter motor is working correctly (a risky maneuver, to be performed with extreme caution).

What are the symptoms of a faulty starter relay?

Symptoms of a faulty starter relay can include difficulty starting the engine, strange noises (such as clicks or buzzes) coming from the relay during starting, engine failure, continuously blowing fuses, or a sudden voltage drop in the electrical system.

What are power relays and what are they used for?

Power relays are electromagnetic switches used to control high-current circuits with a low-current signal. In a nautical context, they are often used to power devices such as bilge pumps, navigation lights, and other electrical accessories, protecting the main switch from overloads.

Where can I find the part number for the replacement relay or solenoid?

The part number is generally indicated in the engine's service manual. Alternatively, you can find the number directly on the component itself (often printed or engraved). If you cannot find the number, contact our customer service team, providing the model and year of your engine.