STANDARD MOTOR PRODUCTS MN-M40D Starter Relay MN/M40D

( Brand: Standard Motor Products ), ( Manufacturer Part Number: MN/M40D ), ( Type: Starter Relay ), ( Compatible Year: 1979 1978 1977 1976 1975 ), ( Compatible Make: Harley Davidson ), ( Bundle Description: 1 Pc Genuine Standard Motor Starter Relay ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review STANDARD MOTOR PRODUCTS Mn/m40d Starter Relay For Harley Davidson fits XLH1000 XU 1975–1979

The Standard Motor MN/M40D starter relay is an essential component for the starting system of Harley-Davidson XLH1000 and XU models manufactured between 1975 and 1979. This starter relay ensures reliable and efficient starting of the motorcycle's engine.

The MN/M40D starter relay is a solid-state, contactless device that replaces traditional electromechanical relays. It measures approximately 3.5 inches long, 2.2 inches wide, and 1 inch high, with a weight of around 113 grams. Its compact size makes it easy to install and integrate into the existing wiring harness of your Harley-Davidson motorcycle.

The relay features a gold-plated contact surface, which ensures superior conductivity and reduces the risk of corrosion. This results in a longer lifespan compared to traditional relays, ensuring that you can enjoy a hassle-free riding experience.

The MN/M40D starter relay operates on a 12V DC power supply and can handle up to 30A of current. It is designed to switch a maximum voltage of 100V AC or 30V DC, making it suitable for the electrical requirements of your Harley-Davidson motorcycle.

Installation of the MN/M40D starter relay is a straightforward process. Simply disconnect the battery, remove the old starter relay, and replace it with the new one. Connect the wires according to the color-coded diagram provided in the instruction manual, ensuring a proper and secure connection.

The MN/M40D starter relay comes with a one-year warranty, ensuring that you are protected against any manufacturing defects during this period. However, it is essential to note that this warranty does not cover damage caused by improper installation, misuse, or normal wear and tear.

In conclusion, the Standard Motor MN/M40D starter relay is a high-quality, reliable, and efficient solution for the starting system of your Harley-Davidson XLH1000 or XU motorcycle manufactured between 1975 and 1979. Its solid-state design, compact size, and gold-plated contact surface make it an excellent upgrade to the traditional electromechanical relays, ensuring a reliable and hassle-free riding experience.

title: Starter Relay Replacement for 1975-1979 Harley-Davidson XLH1000 and XU: A Comprehensive Analysis

The starter relay is an essential component of a Harley-Davidson motorcycle's electrical system. It facilitates the flow of electricity from the battery to the starter motor when the ignition switch is turned. If your 1975-1979 Harley-Davidson XLH1000 or XU model is experiencing starting issues, you might consider replacing the starter relay. In this analysis, we will explore the potential benefits and drawbacks of purchasing a standard motor MN/M40D starter relay for your Harley-Davidson.

1. Improved Starting Performance: A faulty or failing starter relay can cause difficulty in starting your motorcycle. By replacing it with a new relay, you can potentially improve starting performance and eliminate the frustration of a weak or non-responsive motor.

2. Enhanced Safety: A malfunctioning starter relay can pose a safety risk, as it could cause the starter motor to engage unexpectedly or fail to engage when needed. A new starter relay ensures that the starting system functions correctly and safely.

3. Cost-Effective Solution: In many cases, replacing the starter relay is a more cost-effective solution than replacing the entire starter motor or other expensive components.

4. OEM (Original Equipment Manufacturer) Compatibility: The MN/M40D starter relay is designed specifically for Harley-Davidson motorcycles, ensuring optimal compatibility and performance.

1. Cost: While the MN/M40D starter relay is a cost-effective solution compared to other potential repairs, it still requires an investment. Be sure to consider the cost of the relay, labor, and any additional parts or tools that may be needed for the installation.

2. Installation Complexity: Installing a new starter relay can be a complex process, especially for those without extensive mechanical experience. If you are not confident in your ability to perform the installation yourself, it may be worth considering hiring a professional mechanic.

3. Availability: Depending on your location and the availability of parts from local dealers, you may need to order the MN/M40D starter relay online, which could add additional time to the repair process.

In conclusion, replacing the starter relay on your 1975-1979 Harley-Davidson XLH1000 or XU model with a standard motor MN/M40D starter relay can offer several benefits, including improved starting performance, enhanced safety, and cost-effectiveness. However, it is essential to consider the potential drawbacks, such as the cost, installation complexity, and availability. Ultimately, if you suspect that your motorcycle's starter relay is the cause of your starting issues, weigh the pros and cons carefully and make an informed decision based on your budget, mechanical expertise, and availability of parts.

Details:

Standard Motor Starter Relay for 1975-1979 Harley Davidson XLH1000 - Xu: Status: In Stock.

specifications scostarters:

• for models: Xlh1000, Xu
• for makes: Harley, Davidson
• for years: 1975-1979
• brand: Standard Motor Products
• mpn: Mn/m40d
• type: Starter Relay
• compatible year: 1979 1978 1977 1976 1975
• compatible make: Harley Davidson
• bundle description: 1 Pc Genuine Standard Motor Starter Relay
• core charge: Free No Core Charge
• fitment type: Direct Replacement

payments scostarters:

• wallet: Apple-pay
• credit card: Diners-club
• other

shipping scostarters:

• class: Standard
• service: Standard
• transit: 3-6 Days
• type: Fixed
• cost: $0.00

seller scostarters:

• # reviews: 22714
• rating: 99.3%
• city: Multiple warehouses

offer scostarters:

• quantity: 1
• started: May 14, 2026
• options: Ship-to-home
• availability: In Stock
• sold: 0

returns scostarters:

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

general scostarters:

• Motorcycle Scooter Parts Accessories > Electrical Ignition Components > Starter Motors
• condition: New

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