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  3. MAZDA EG21-67-100A

MAZDA EG21-67-100A Headliner Wiring Harness

fits model: Cx-7. make: Mazda. year: 2009.

Eg21-67-100a Mazda Genuine Headliner Wiring Harness

( Manufacturer Part Number: EG21-67-100A ), ( Part Type: Wiring Headliner Harness ), ( Genuine Oem: Yes ), ( Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Parts Included: Only Part Reference 10 On The Diagram Is Included )

Review MAZDA Genuine Headliner Wiring Harness fits CX-7 2009

The **Mazda EG21-67-100A Headliner Wiring Harness** is a high-quality, precision-engineered electrical component designed specifically for Mazda vehicles equipped with the EG21 headliner assembly, commonly found in models such as the Mazda3 (2014 2019), Mazda6 (2014 2019), and Mazda CX-5 (2013 2016). This wiring harness serves as the critical electrical backbone for the headliner s integrated lighting, sensors, and control functions, ensuring seamless operation of features like ambient lighting, rain sensors, and sunroof or moonroof compatibility. Crafted from durable, automotive-grade materials, the harness features meticulously routed wiring with corrosion-resistant connectors and shielded cables to withstand the demanding conditions of an under-dash or headliner installation, including exposure to temperature fluctuations, moisture, and mechanical stress. Each wire is carefully color-coded and labeled to match Mazda s factory wiring standards, facilitating a straightforward and reliable installation process for both professional technicians and experienced DIY enthusiasts. The harness includes all necessary splice points, terminal blocks, and harness clips to maintain a clean, organized fit within the vehicle s interior, reducing the risk of wire chafing or short circuits. Whether replacing a damaged original harness, upgrading an aftermarket headliner system, or addressing electrical connectivity issues, this **EG21-67-100A** component ensures compatibility, longevity, and optimal performance, delivering the same level of reliability as Mazda s OEM specifications. Its robust construction and meticulous design make it an indispensable upgrade for restorers, customizers, and mechanics seeking a hassle-free solution for headliner electrical integration.

**Pros and Cons of buying a Mazda EG21-67-100A Headliner Wiring Harness**

The Mazda EG21-67-100A headliner wiring harness is a replacement part designed for specific Mazda models, particularly those with headliner lighting or control systems. Below is a detailed breakdown of its advantages and disadvantages.

### **Pros**

1. **Compatibility and Fit**

The harness is manufactured to match Mazda s original specifications, ensuring a proper fit without modifications. This reduces the risk of installation errors that could damage wiring or the headliner itself.

2. **Quality and Durability**

Mazda s OEM (Original Equipment Manufacturer) parts are generally built to high standards, using materials that resist wear, corrosion, and environmental factors. This can extend the lifespan of the headliner system compared to aftermarket alternatives that may use cheaper components.

3. **Reliability**

Since it is an OEM part, the wiring harness is less likely to fail prematurely due to poor soldering, frayed wires, or inconsistent insulation. This can prevent recurring electrical issues, such as flickering lights or intermittent control malfunctions.

4. **Warranty Coverage**

Purchasing directly from Mazda or an authorized dealer often includes a warranty, providing peace of mind in case of defects. Aftermarket parts may not offer the same level of protection, leaving you responsible for any failures.

5. **Simplified Installation**

The harness is designed to integrate seamlessly with Mazda s wiring system, reducing the complexity of installation. This can save time and labor costs, especially if you or a professional are familiar with automotive electrical work.

6. **Consistency with Vehicle Electronics**

The wiring harness is engineered to work harmoniously with Mazda s vehicle control modules and lighting systems. This minimizes the risk of compatibility issues that could arise with non-OEM parts, which might not adhere to the same electrical standards.

7. **Resale Value**

If you plan to sell or trade in your vehicle in the future, having OEM parts can enhance its perceived value. Buyers often prefer vehicles with original or high-quality replacement components.

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### **Cons**

1. **Higher Cost**

OEM parts are typically more expensive than aftermarket alternatives. The Mazda EG21-67-100A harness may cost significantly more than a generic or third-party replacement, which could be a deterrent for budget-conscious buyers.

2. **Limited Availability**

OEM parts may not be as widely stocked as aftermarket options, especially for older or less common Mazda models. This could require ordering from a dealer or waiting for shipment, adding inconvenience.

3. **Potential Overkill for Minor Issues**

If the original harness failed due to a minor issue (e.g., a loose connection or a single damaged wire), replacing the entire harness with an OEM part might be excessive. In such cases, a targeted repair or aftermarket solution could be more cost-effective.

4. **Longer Lead Times**

Ordering from Mazda or an authorized dealer may involve longer wait times compared to aftermarket suppliers, which often have faster shipping options. This delay could be problematic if you need the part urgently.

5. **No Customization Options**

Unlike aftermarket harnesses, OEM parts do not offer customization (e.g., additional wiring, upgraded materials, or modified connectors). If you require specific modifications, you may need to work around the harness s fixed design.

6. **Potential for Overstocking**

If you purchase the harness in anticipation of future use (e.g., for another vehicle or as a spare), you risk storing it for an extended period. Over time, the part may become obsolete if Mazda discontinues production or updates its wiring standards.

7. **Dealer Markup**

Purchasing from a dealership can sometimes result in higher prices due to overhead costs, labor fees for installation, or regional pricing strategies. Buying directly from Mazda s official website or an online retailer may offer better value.

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### **Conclusion**

The Mazda EG21-67-100A headliner wiring harness is a high-quality, reliable replacement option that ensures compatibility, durability, and peace of mind. Its OEM status makes it ideal for those prioritizing long-term performance, warranty coverage, and seamless integration with Mazda s vehicle systems. However, the higher cost, limited availability, and potential overkill for minor issues may make it less appealing to budget-conscious buyers or those seeking quick, low-cost solutions.

For most Mazda owners who value original equipment quality and are willing to invest in a premium part, this harness is a strong recommendation. If cost is a major concern or the issue is isolated to a small section of wiring, an aftermarket alternative could be a more practical choice.

### **Recommendation**

- **Buy the Mazda EG21-67-100A harness if:**

- You need a guaranteed fit and long-term reliability.

- You want warranty coverage and OEM-quality materials.

- You are repairing a critical system where compatibility is non-negotiable.

- You are comfortable paying a premium for peace of mind.

- **Consider an aftermarket alternative if:**

- You are on a tight budget and the issue is minor (e.g., a single damaged wire).

- You need the part quickly and aftermarket suppliers offer faster shipping.

- You are open to customization or have experience with automotive electrical repairs.

For most Mazda owners, the EG21-67-100A harness is the best choice for ensuring a flawless repair, but weigh the cost against your specific needs before purchasing.

Details:

Without map light, without garage opener. Electrical parts are not returnable. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Parts must be resalable and in the original packaging.

part #: eg2167100a price

  • $46.05

specifications carspeedometeriz:

  • for models: Cx-7
  • for makes: Mazda
  • for years: 2009
  • mpn: Eg21-67-100a
  • part type: Wiring Headliner Harness
  • genuine oem: Yes
  • warranty: 1 Year
  • fitment type: Direct Replacement
  • parts included: Only Part Reference 10 On The Diagram Is Included

seller carspeedometeriz:

  • rating: 99.3%
  • city: Port Charlotte, Florida
  • # reviews: 1176

offer carspeedometeriz:

  • availability: In Stock
  • quantity: 4
  • started: April 14, 2026
  • options: Ship-to-home
  • sold: 0

general carspeedometeriz:

  • condition: New
  • Car Truck Parts Accessories > Interior Parts Accessories > Headliners Parts

returns carspeedometeriz:

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

payments carspeedometeriz:

  • wallet: Paypal
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  • credit card: Visa

shipping carspeedometeriz:

  • transit: 2-4 Days
  • class: Standard
  • cost: $24.18
  • service: Standard
  • type: Fixed
for models: cx-7, for makes: mazda, for years: 2009, part type: wiring headliner harness, genuine oem: yes, warranty: 1 year, fitment type: direct replacement, parts included: only part reference 10 on the diagram is included,
manufacturer: mazda, category: auto parts > car truck parts accessories > interior parts accessories > headliners parts, sku: 22626216002852741,
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  • New. Offer #1 priced at $46.05 + $24.18 shipping estimate = $70.23* total. Genuine Mazda Parts.+$24.18 shipping

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