YAMAHA Starter Relay 1B7-81940-00-00 R3374 141D

( Manufacturer Part Number: 1B7-81940 ), ( Part Type: Starter )

Review YAMAHA Starter Relay Assy

The Yamaha 1B7-81940 starter relay, also known as R3374 141D, is a crucial component of the starting system in certain Yamaha outboard motor models. This relay plays a vital role in ensuring a reliable and smooth starting experience for your outboard engine.

The starter relay is a compact, yet robust device designed with high-quality components. It measures approximately 57.5 mm (W) x 29.5 mm (H) x 17.5 mm (D), making it a perfect fit for the specific applications it's intended for. The relay is encased in a durable plastic housing, which protects it from various environmental conditions.

The primary function of the Yamaha 1B7-81940 starter relay is to control the flow of electrical current to the engine starter motor. It features three terminals: a 12V DC input terminal, a 12V DC switched terminal, and a 12V DC constant terminal. The input terminal receives power from the battery, while the switched terminal receives power when the ignition switch is turned on. The constant terminal is used to provide a constant 12V DC power source for various accessories or components.

This starter relay is designed to handle the demanding requirements of marine applications. It is built to withstand the harsh marine environment, including exposure to saltwater, UV radiation, and extreme temperatures. The relay also features a built-in overload protection mechanism, which helps prevent damage to the starter motor caused by excessive current.

The Yamaha 1B7-81940 starter relay is an essential replacement part for Yamaha outboard motor models that require this specific relay type. It is engineered to the same high standards as the original factory part, ensuring optimal performance and reliability. If you are experiencing starting issues or have a faulty relay in your Yamaha outboard motor, this replacement part is the ideal solution.

In conclusion, the Yamaha 1B7-81940 starter relay is a vital component of your outboard motor's starting system. It is designed with marine applications in mind, ensuring durability, reliability, and protection against harsh environmental conditions. With its compact size, robust construction, and high-quality components, this starter relay is the perfect choice for maintaining the optimal performance of your Yamaha outboard motor.

Starter Relay (Yamaha 1B7-81940) Buying Decision: Pros, Cons, and Recommendation

The Yamaha 1B7-81940 starter relay (model number R3374 141D) is a crucial component in the starting system of certain Yamaha engines. Let's examine the key advantages and disadvantages of purchasing this starter relay to help you make an informed decision.

1. OEM Part: By choosing an original equipment manufacturer (OEM) part like the Yamaha 1B7-81940 starter relay, you ensure compatibility with your vehicle's electrical system and peace of mind knowing that it was designed specifically for your engine model.

2. Reliability: OEM parts are generally known for their durability and reliability, as they undergo extensive testing during the manufacturing process to meet the rigorous standards of the vehicle manufacturer.

3. Warranty: Purchasing an OEM part like the Yamaha 1B7-81940 starter relay often comes with a manufacturer's warranty, which can provide additional protection against defects or failures.

1. Cost: OEM parts, including the Yamaha 1B7-81940 starter relay, tend to be more expensive than aftermarket alternatives due to their higher production costs and brand reputation.

2. Availability: Depending on the specific engine model and region, availability of OEM parts like the Yamaha 1B7-81940 starter relay may be limited, making it more challenging to find and purchase.

When considering the purchase of a starter relay for your Yamaha engine, the Yamaha 1B7-81940 (R3374 141D) offers several advantages, including original equipment manufacturer compatibility, reliability, and the potential for a manufacturer's warranty. However, it also comes with a higher cost and potentially limited availability compared to aftermarket alternatives. Ultimately, the decision to purchase the Yamaha 1B7-81940 starter relay depends on your priorities, budget, and availability of the part in your region.

If you value compatibility, reliability, and the peace of mind that comes with an OEM part, and you have the budget and can find the Yamaha 1B7-81940 starter relay available, it is a recommended option for replacing the starter relay on your Yamaha engine. Alternatively, if cost is a significant concern, you may consider researching and purchasing a high-quality aftermarket starter relay as a more affordable alternative.

Details:

1B7-81940-00-00 STARTER RELAY ASSY USED SOLD AS EACH UNLESS SPECIFIED This is a part.

part #: 1b781940 prices

• $63.02-$125.99

specifications perwatercraft:

• for makes: Yamaha
• mpn: 1b7-81940
• part type: Starter

payments perwatercraft:

• wallet: Google-pay
• other
• credit card: Visa

seller perwatercraft:

• # reviews: 492
• rating: 99.7%
• city: Remsenburg, New York

returns perwatercraft:

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

offer perwatercraft:

• sold: 0
• started: January 21, 2026
• options: Ship-to-home
• quantity: 1
• availability: In Stock

general perwatercraft:

• condition: Used
• Parts Accessories > Personal Watercraft Parts > Other Parts

shipping perwatercraft:

• class: Standard
• carrier: USPS
• transit: 3-8 Days
• type: Calculated
• service: USPS Ground Advantage
• cost: $15.25

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