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  3. DORMAN 17FCQS21

17FCQS21 DORMAN Expansion Plug Cordia Mighty Tredia Eclipse

fits model: Eclipse, Galant, Lancer.

17FCQS21 DORMAN Expansion Plug Cordia Mighty Tredia Eclipse
Product Aspects
BrandDORMAN
Manufacturer Part Number17FCQS21
TypeEXPANSION PLUG
Fits 11984-1988 MITSUBISHI CORDIA
Fits 21990-2005 MITSUBISHI ECLIPSE
Fits 31989-2005 MITSUBISHI GALANT
Fit NoteENGINE CORE PLUG
Manufacturer Warranty12 MONTH WARRANTY
AttentionPLEASE READ ALL NOTES TO CONFIRM FITMENT
Cs-sku400

Review DORMAN Expansion Plug For Cordia Mighty Max Tredia for ECLIPSE GALANT LANCER

Introducing the Dorman 17FCQS21 Expansion Plug, an essential automotive component designed specifically for various models including the Cordia, Eclipse, Galant, Mighty Tredia, and Lancer. This plug plays a crucial role in the vehicle's charging system, ensuring optimal performance of the electrical accessories and the battery.

The Dorman 17FCQS21 is an OE-quality expansion plug, meaning it matches the original equipment in terms of fit, form, and function. It is engineered to replace the failing or worn-out plugs in your vehicle's charging system. The plug features a robust, durable design, ensuring reliable operation even under the most demanding conditions.

This expansion plug boasts a sleek, compact design, with a high-density, multi-strand copper wire construction that ensures efficient power transfer. The plug terminals are designed to provide a secure connection, minimizing the risk of arcing and corrosion. Additionally, the terminals are coated with a protective, anti-corrosive material to ensure long-lasting performance.

Installing the Dorman 17FCQS21 Expansion Plug is a straightforward process. Each terminal is clearly marked, making identification easy. The plug comes with a detailed installation guide, ensuring a hassle-free installation experience.

In summary, the Dorman 17FCQS21 Expansion Plug is a must-have for vehicle owners looking to maintain the electrical performance and charging system efficiency of their Cordia, Eclipse, Galant, Mighty Tredia, or Lancer. With its OE-quality design, robust construction, and easy installation, this expansion plug is an excellent choice for keeping your vehicle running at its best.

Dorman 17FCQS21 Expansion Plug for Mitsubishi Models (Cordia, Eclipse, Galant, Lancer): A Comprehensive Analysis

Introduction:

The Dorman 17FCQS21 is an expansion plug designed to fit various Mitsubishi models, including the Cordia, Eclipse, Galant, and Lancer. This component plays a crucial role in the cooling system by allowing the radiator to expand when the engine heats up. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this part.

Pros:

1. OEM Equivalent: The Dorman 17FCQS21 is engineered as an OEM (Original Equipment Manufacturer) equivalent, ensuring a perfect fit and function in your vehicle.

2. Cost-effective: Compared to buying a genuine OEM part, the Dorman 17FCQS21 is often more affordable, making it an attractive option for budget-conscious consumers.

3. Easy Installation: Many users report that the installation process is straightforward and does not require extensive mechanical knowledge or skills.

4. High-quality Materials: The Dorman 17FCQS21 is manufactured using premium materials, ensuring durability and reliability.

Cons:

1. Potential for Leaks: Although rare, some users have reported experiencing leaks after installing the Dorman 17FCQS21. This could be due to minor manufacturing defects or poor installation techniques.

2. Incompatible with some Vehicles: Although the Dorman 17FCQS21 is designed to fit various Mitsubishi models, it may not be compatible with every single year or trim level. Always double-check the compatibility before making a purchase.

3. Lack of Brand Recognition: Some consumers may be hesitant to purchase aftermarket parts due to a lack of brand recognition compared to OEM parts.

Conclusion:

The Dorman 17FCQS21 expansion plug offers several advantages, including its OEM equivalent design, cost-effectiveness, and easy installation. However, potential downsides such as the risk of leaks and compatibility issues should be considered before making a purchase. Ultimately, the decision to buy the Dorman 17FCQS21 comes down to your individual needs, preferences, and budget. If you value the peace of mind that comes with a genuine OEM part, you may prefer to pay more for that assurance. However, if you are looking for a more cost-effective solution that still provides reliable performance, the Dorman 17FCQS21 could be an excellent choice.

Recommendation:

If you are in the market for a new expansion plug for your Mitsubishi Cordia, Eclipse, Galant, or Lancer and are looking for a cost-effective alternative to OEM parts, the Dorman 17FCQS21 is worth considering. Just be sure to double-check the compatibility before making a purchase and follow the installation instructions carefully to minimize the risk of leaks.

Details:

Durable construction - this part is made from quality materials to ensure reliable performance and long service life. Ideal solution - this plug is a reliable replacement for an original part that missing or has failed due to fatigue. Trustworthy quality - backed by team of product experts in the USA and more than a century automotive experience. Product specifications package contents:10 expansion plug brass.

specifications engineblocksam:

  • for models: Eclipse, Galant, Lancer
  • brand: Dorman
  • mpn: 17fcqs21
  • type: Expansion Plug
  • fits 1: 1984-1988 Mitsubishi Cordia
  • fits 2: 1990-2005 Mitsubishi Eclipse
  • fits 3: 1989-2005 Mitsubishi Galant
  • fit note: Engine Core Plug
  • manufacturer warranty: 12 Month Warranty
  • attention: Please Read All Notes To Confirm Fitment
  • cs-sku: 400

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  • started: october 17, 2025
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  • category: Auto Parts > Car Truck Accessories > Engines > Blocks
rating: 91.4% out of 100 based on 923 user ratings.
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