MERCEDES A1664409007 Front Seat Frame Track Rail Right Benz X166

( Manufacturer Part Number: A1664409007 ), ( Part Type: Seat Frame ), ( Manufacturer Warranty: 1 Month ), ( Oe/oem Part Number: 1664409007, A 166 440 90 07, 166 440 90 07, 935824-108, 935824108, 935824 108, 960562-103, 960562103, 960562 103, 966072-103, 966072103, 966072 103 ), ( Country Of Origin: Germany ), ( Placement On Vehicle: Front, Right )

Review MERCEDES benz Front Seat Frame Track Rail Right Side Oem fits W166 ML350 GL550 GL450

The **Mercedes-Benz A1664409007 Front Seat Frame Track Rail (Right, X166/W166, ML350, GL550, GL450)** is a precision-engineered component designed to ensure optimal seating comfort, structural integrity, and long-term reliability within the luxury Mercedes-Benz SUV lineup, specifically tailored for the **X-Class (X166) and W-Class (W166) models**, including the **ML350, GL550, and GL450**. Crafted from high-grade, durable materials, this track rail forms an integral part of the front seat frame assembly, providing a stable foundation for the seat s movement and alignment while absorbing dynamic forces during driving. Its robust construction minimizes wear and tear, reducing the risk of misalignment or premature failure, which is critical for maintaining the vehicle s premium ride quality and driver experience. The rail is meticulously designed to accommodate the precise contours of the seat frame, ensuring a seamless fit that prevents rattling, shifting, or excessive play common issues that can degrade comfort and safety over time. Whether installed in the **ML350 s refined yet powerful cabin** or the **GL550/GL450 s spacious, executive-oriented seating**, this component plays a vital role in upholding the brand s reputation for superior craftsmanship and driver-centric engineering. For enthusiasts and professionals alike, replacing or upgrading this part is a straightforward yet impactful maintenance task that restores factory-level performance, enhances seating stability, and extends the lifespan of the seat mechanism, all while preserving the vehicle s luxurious aesthetic and functional integrity.

### **Pros and Cons of buying a Mercedes-Benz A1664409007 Front Seat Frame Track Rail (Right) for W166 (ML350, GL550, GL450)**

1. **Direct OEM Replacement** This part is an original equipment manufacturer (OEM) component, ensuring a perfect fit and compatibility with your Mercedes-Benz W166 model (ML350, GL550, GL450). It matches the factory specifications in terms of material, design, and functionality.

2. **High-Quality Materials** Mercedes-Benz parts are known for durability and precision engineering. The track rail is likely made from high-strength steel or aluminum, designed to withstand regular wear and tear while maintaining structural integrity.

3. **Reliability and Longevity** Since it s a genuine part, it should last as long as the original component, reducing the risk of premature failure. This is particularly important for safety-critical components like seat track rails.

4. **Warranty Coverage** If purchased from an authorized dealer or a reputable supplier, this part may come with a warranty, providing peace of mind against defects or early wear.

5. **Maintenance of Resale Value** Using OEM parts helps preserve the vehicle s original condition, which can be beneficial if you plan to sell or trade in the car in the future.

6. **Professional Installation Compatibility** Mechanics familiar with Mercedes-Benz vehicles will be more confident working with OEM parts, reducing the risk of installation errors.

7. **Consistency with Factory Performance** The track rail will function exactly as intended by Mercedes-Benz, ensuring smooth seat movement and proper load-bearing capacity.

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1. **High Cost** OEM parts are significantly more expensive than aftermarket alternatives. The price of this specific track rail will likely be several hundred dollars, depending on the supplier and region.

2. **Limited Availability** Finding this exact part may require ordering from a specialty auto parts dealer, an authorized Mercedes-Benz service center, or an online marketplace. Availability could be limited compared to more common parts.

3. **Potential for Overkill** If the seat track rail is only worn or damaged in minor ways, replacing the entire rail may be unnecessary. A more cost-effective solution might involve repairing or replacing only the damaged section (though this depends on the extent of the issue).

4. **Installation Complexity** Replacing a seat track rail can be labor-intensive, especially in vehicles like the W166 series, which may require disassembling parts of the seat or dashboard. This could incur additional labor costs if not done by the owner.

5. **Time-Consuming** If the owner is not mechanically inclined, this repair may require taking the vehicle to a professional, which could take time depending on shop availability.

6. **Risk of Counterfeit Parts** If purchasing from an untrusted source, there is a risk of receiving a replica or low-quality part that doesn t meet OEM standards. Always verify the supplier s authenticity.

7. **Potential for Unnecessary Replacement** If the issue is not related to the track rail itself (e.g., worn bushings, misalignment, or electrical problems with seat motors), replacing the rail alone may not resolve the underlying problem.

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The **Mercedes-Benz A1664409007 front seat frame track rail (right)** is an excellent choice if you prioritize **quality, reliability, and long-term durability** for your W166 (ML350, GL550, GL450). It ensures a perfect fit, maintains the vehicle s original performance, and aligns with Mercedes-Benz s engineering standards. However, the **high cost and potential complexity of installation** make it a significant investment, especially if the issue is minor or could be addressed with a less expensive solution.

If the seat track rail is **visibly damaged, broken, or causing safety concerns** (e.g., rattling, misalignment, or difficulty adjusting the seat), then replacing it with an OEM part is justified. If the problem is **cosmetic or minor wear**, you may want to explore aftermarket alternatives or consult a mechanic to determine if partial repair is feasible.

For most owners, the **pros outweigh the cons** when it comes to safety and long-term reliability, making this an ideal choice for a critical component. However, always weigh the cost against the severity of the issue and consider whether DIY installation is feasible.

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- The seat track rail is **structurally compromised** or causing **safety concerns**.

- You value **long-term reliability** and are willing to pay for a genuine Mercedes-Benz component.

- You have access to **professional installation** or are confident in performing the repair yourself.

- The issue is **minor wear** and could be resolved with a **bushing replacement** or **adjustment**.

- You are on a **tight budget** and want to explore **aftermarket or remanufactured parts** (ensure they are high-quality and compatible).

- The part is **difficult to source**, and you are open to **used or refurbished OEM parts** (with caution).

- **Verify the supplier** before purchasing to ensure you are getting a **genuine, high-quality part**. Authorized Mercedes-Benz dealers, trusted online marketplaces (e.g., RockAuto, Mopar, or specialized European parts suppliers), or reputable salvage yards are the safest options.

Ultimately, this is a **sound investment for safety and longevity**, but always assess whether the repair is **necessary and cost-effective** for your specific situation.

Details:

Color codes: 040/101. Declared values of each package are according to the actual value that. Vehicle ID: 2013 X166 GL450 V43.

part #: a1664409007 prices

• $134.51-$179.99

specifications seainterio:

• for models: W166, Ml350, Gl550, Gl450
• for makes: Mercedes
• mpn: A1664409007
• part type: Seat Frame
• manufacturer warranty: 1 Month
• oe/oem part number: 1664409007, A 166 440 90 07, 166 440 90 07, 935824-108, 935824108, 935824 108, 960562-103, 960562103, 960562 103, 966072-103, 966072103, 966072 103
• country of origin: Germany
• placement on vehicle: Front, Right

returns seainterio:

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

shipping seainterio:

• type: Fixed
• cost: $50.00
• class: Standard
• service: UPS Ground
• transit: 4-7 Days
• carrier: UPS

payments seainterio:

• credit card: Diners-club
• wallet: Paypal
• other

offer seainterio:

• sold: 0
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: February 5, 2026

seller seainterio:

• rating: 100.0%
• # reviews: 15454
• city: Rancho Cordova, California

general seainterio:

• Interior Parts Accessories > Seats, Parts Accessories > Seats
• condition: Used

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