1. Car & Truck Ignition Kits Items
  2. sku: 7884598582456631
  3. PERTRONIX MR-164

PERTRONIX MR-164 Ignitor Marelli Plug 694342550646 S109A

fits model: Twin.

Mr-164 Pertronix Ignitor Marelli S109a 6 Cyl Twin Plug

( Brand: Pertronix ), ( Type: Electronic Ignition Conversion Kits ), ( Manufacturer Part Number: MR-164 ), ( California Prop 65 Warning: True ), ( UPC: 694342550646 )

Review PERTRONIX Ignitor Marelli Cyl Plug fits TWIN

The Pertronix MR-164 Ignitor for Marelli S109A twin plug applications is a high-performance ignition system component designed to deliver reliable and consistent spark for optimal engine performance. This ignitor is specifically engineered to replace the original equipment in various vehicles, including those that utilize the Marelli S109A ignition system.

The MR-164 ignitor is an upgrade from standard ignition systems, as it features a robust design and advanced technology. It is constructed from premium materials, ensuring durability and longevity. The ignitor's compact, yet sturdy design allows for easy installation in tight engine compartments.

The MR-164 ignitor employs a unique and efficient design that produces a strong, consistent spark. This design includes a high-voltage, low-impedance ignition circuit that ensures a powerful spark jump across the twin plugs. By delivering a strong spark, the ignitor helps to improve combustion efficiency, leading to better engine performance and fuel economy.

One of the key advantages of the Pertronix MR-164 Ignitor for Marelli S109A twin plug applications is its resistance to electrical noise and interference. This is achieved through the use of a proprietary, noise-filtering technology that minimizes the risk of misfires or erratic engine behavior. The ignitor's noise-filtering capabilities contribute to a smoother, more stable engine operation.

This ignitor is designed to be a direct replacement for the original equipment, ensuring a straightforward installation process. It is compatible with various vehicle applications, including those that use Marelli S109A ignition systems. The installation process is typically straightforward, requiring no modifications to the wiring harness or engine components.

In summary, the Pertronix MR-164 Ignitor for Marelli S109A twin plug applications is a top-tier ignition system component that delivers a strong, consistent spark for optimal engine performance. Its robust design, advanced technology, and noise-filtering capabilities make it an excellent choice for vehicle owners seeking to upgrade their ignition systems. With its easy installation process and compatibility with various applications, the MR-164 ignitor is a reliable and cost-effective solution for improving engine performance and longevity.

The Pertronix MR-164 Ignitor and the Marelli S109A Twin Plug ignition system are both popular options for upgrading the ignition system in older vehicles. Here are some pros and cons of each to help you make an informed decision:

Pertronix MR-164 Ignitor: Pros:

1. Easy to install: The Pertronix MR-164 Ignitor is a direct replacement for many OEM distributor ignition systems, making installation relatively simple.

2. Improved performance: The MR-164 Ignitor provides a more reliable and consistent spark, which can lead to improved engine performance.

3. Durable: The ignitor is designed to last longer than OEM ignition systems, reducing the need for frequent replacements.

4. Adjustable: The ignitor allows for adjustment of the timing advance, giving you more control over your engine's performance.

Cons:

1. Not suitable for all vehicles: The MR-164 Ignitor is not compatible with all vehicles, so it's essential to check compatibility before purchasing.

2. Requires some knowledge: Installing the MR-164 Ignitor may require some mechanical knowledge, especially if you're adjusting the timing advance.

3. Expensive: Compared to OEM ignition systems, the MR-164 Ignitor can be more expensive.

Marelli S109A Twin Plug: Pros:

1. Modern ignition system: The Marelli S109A Twin Plug is a modern ignition system that provides a reliable and consistent spark, improving engine performance.

2. Suitable for many vehicles: The S109A Twin Plug is compatible with a wide range of vehicles, making it a versatile option.

3. Easy installation: The ignition system is relatively easy to install, especially if your vehicle already has a distributorless ignition system.

4. Better fuel efficiency: The improved ignition system can lead to better fuel efficiency, saving you money over time.

Cons:

1. Expensive: The Marelli S109A Twin Plug is more expensive than some other ignition systems, especially for vehicles that don't originally come with this type of ignition system.

2. Requires some knowledge: Installing the S109A Twin Plug may require some mechanical knowledge, especially if you're not familiar with the wiring and connections.

3. May not fit all applications: The S109A Twin Plug may not fit all vehicles, so it's essential to check compatibility before purchasing.

Conclusion:

Both the Pertronix MR-164 Ignitor and the Marelli S109A Twin Plug have their advantages and disadvantages. If you're looking for a simple upgrade to your vehicle's ignition system and want something that's easy to install and adjust, the Pertronix MR-164 Ignitor might be the best option. However, if you're looking for a more modern ignition system that provides better performance, fuel efficiency, and compatibility with a wider range of vehicles, the Marelli S109A Twin Plug is worth considering, despite its higher cost. Ultimately, your choice will depend on your specific needs and budget.

Recommendation:

If you're looking for a simple and cost-effective upgrade to your vehicle's ignition system, the Pertronix MR-164 Ignitor is a solid choice. However, if you're looking for a more modern and versatile ignition system that provides better performance and compatibility with a wider range of vehicles, the Marelli S109A Twin Plug is the way to go. Keep in mind that installation may require some mechanical knowledge, and it's essential to check compatibility before purchasing.

Details:

No points to burn. Rotating cobalt magnets trigger a Hall Effect integrated circuit. For optimal performance, use the Ignitor with Flame-Thrower 40,000 volt coils

Legal in all 50 states and Canada. Delivers twice the voltage to spark plugs, increasing horsepower, fuel economy, and plug life. The Ignitor has been called the stealth ignition because of its quick installation and nearly undetectable presence under your distributor cap. There is no black-box to clutter the engine compartment.

Stable timing. Will trigger most multi-spark CD ignitions. Part # MR-164 Condition New Brand PerTronix Sold Each Details Info For over thirty years, the Ignitor has proven itself in applications ranging from race cars to tractors. 2:1 improvement over points in current fall time for increased coil output.

No moving parts to wear out. The Ignitor replaces breaker points and troublesome factory electronic ignitions with a dependable, self contained maintenance free ignition system.

part #: mr164 price

  • $406.20

specifications sparkystooge:

  • for models: Twin
  • brand: Pertronix
  • type: Electronic Ignition Conversion Kits
  • manufacturer part number: MR-164
  • california prop 65 warning: True
  • upc: 694342550646

general sparkystooge:

  • condition: New
  • Car Truck Parts Accessories > Ignition Systems Components > Ignition Kits

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  • cost: $0.00
  • carrier: UPS
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  • class: Standard
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  • type: Fixed

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  • # reviews: 334249
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  • started: October 25, 2025

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for models: twin, type: electronic ignition conversion kits, california prop 65 warning: true,
category: auto parts > car truck parts accessories > ignition systems components > ignition kits, sku: 7884598582456631,

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1 offer $406.20 USD
  • New. Offer #1 priced at $406.20 + $0.00 delivery = $406.20* total. no points to burn For over thirty years, the Ignitor has proven itself in applications ranging from race cars to tractors.FREE SHIPPING

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