MERCEDES 28779TMQT Door Lock Rod Grommet

( Manufacturer Part Number: 28779TMQT ), ( Part Type: Door Lock Rod ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Door Lock Rod Grommet Front ), ( Years: 2007 2008 2009 2010 2011 ), ( Application: Mercedes Cls550 Door Lock Rod Grommet ), ( Cs-sku: 400 )

Review MERCEDES Genuine Door Lock Rod Grommet 28779tm Quart fits CLS550 2007–2011

The **28779TMQT door lock rod grommet** is a precision-engineered rubber component specifically designed for the **2007 2011 Mercedes-Benz CLS-Class (W218) models**, including the **CLS550**, ensuring a seamless and reliable operation of the door lock mechanism. Crafted from high-quality **synthetic rubber**, this grommet serves as a protective and flexible intermediary between the door lock rod and surrounding metal components, preventing wear, corrosion, and premature failure caused by friction, moisture, or road debris. Its **custom-fit design** guarantees a snug, interference-free installation within the door panel s lock rod assembly, maintaining the integrity of the vehicle s security system while minimizing unnecessary stress on the lock mechanism. Over time, exposure to environmental elements can degrade standard rubber components, leading to stiffness, cracking, or complete failure this grommet is engineered to withstand the demands of daily driving, including temperature fluctuations, humidity, and mechanical strain. By replacing the original or worn-out grommet with this **OEM-quality part**, owners can restore optimal functionality to their door locks, eliminate rattling noises, and avoid potential lock malfunctions that could compromise safety or convenience. Whether addressing a routine maintenance need or addressing a specific issue like a squeaking door or intermittent lock engagement, this grommet is a straightforward yet critical upgrade that aligns with Mercedes-Benz s emphasis on precision and durability.

### Pros and Cons of buying a Part Number **28779TMQT** (Door Lock Rod Grommet for 2007 2011 Mercedes-Benz CLS550)

1. **Direct Fitment** This part is specifically designed for the 2007 2011 Mercedes-Benz CLS550, ensuring compatibility without modifications.

2. **High-Quality Material** Grommets from reputable suppliers (such as OE or aftermarket brands like Dorman, Fel-Pro, or Mercedes-Benz approved parts) are made from durable rubber or silicone, resistant to wear, oil, and environmental damage.

3. **Prevents Leaks and Damage** A failing grommet can allow moisture, dirt, or road debris to enter the door mechanism, leading to rust, electrical issues, or malfunctioning locks. Replacing it restores proper sealing.

4. **Easy Installation** Grommets are typically a straightforward DIY job, requiring only basic tools (screwdriver, pliers, and possibly a pry tool). No welding or specialized equipment is needed.

5. **Cost-Effective** Replacing a single grommet is far cheaper than repairing or replacing a damaged door lock mechanism or wiring harness.

6. **Availability** This part is widely stocked by auto parts retailers (O Reilly, RockAuto, Amazon, eBay) and Mercedes-Benz dealerships, ensuring easy sourcing.

7. **Prevents Future Issues** Addressing a worn grommet early can prevent secondary problems like corroded door hinges, malfunctioning window regulators, or electrical shorts.

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1. **Potential Counterfeit Parts** Some sellers on platforms like eBay or Amazon may offer fake or low-quality grommets that fail prematurely. Buying from untrusted sources risks wasting money and time.

2. **Mismatched Dimensions** While this part number is correct, slight variations in door designs (e.g., slight differences between 2007 vs. 2011 models) could require trimming or adjustments during installation.

3. **Limited Lifespan** Even high-quality grommets may degrade over time due to exposure to UV light, heat, or chemicals (e.g., brake fluid, de-icer). They may need replacement every few years, especially in harsh climates.

4. **Accessibility Challenges** The grommet is located inside the door panel, which may require removing the door trim or inner panel for access. This can be time-consuming for inexperienced DIYers.

5. **Price Variability** Prices can range from **$5 $20** depending on the brand and seller. Cheaper options may lack durability, while premium OE parts cost more but offer better longevity.

6. **Risk of Overlooking Underlying Issues** If the door lock mechanism itself is failing (e.g., worn bushings, broken rods), replacing just the grommet may not fully resolve the problem. A thorough inspection is recommended.

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Replacing the **28779TMQT door lock rod grommet** on your 2007 2011 Mercedes-Benz CLS550 is a **practical and cost-effective maintenance task** that prevents minor issues from escalating. The benefits of improved sealing, ease of installation, and long-term protection outweigh the minor drawbacks, provided you source the part from a reputable supplier and ensure proper fitment.

**If the grommet is visibly cracked, swollen, or leaking**, replacement is strongly advised. If you re unsure about the condition, inspecting it during routine maintenance is wise. For those comfortable with basic automotive repairs, this is a **quick fix** that can extend the life of your door components.

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1. **Purchase from a Trusted Source** Buy from **O Reilly Auto Parts, RockAuto, Amazon (verified sellers), or a Mercedes-Benz dealership** to avoid counterfeit parts. Look for brands like **Dorman, Fel-Pro, or genuine Mercedes-Benz parts**.

2. **Verify Fitment** Double-check the part number and your vehicle s year/model to ensure compatibility. Some sellers offer "universal" grommets that may not fit perfectly.

3. **Prepare for Installation** Have the necessary tools (trim removal tools, pliers, rubber mallet if needed) and follow a **step-by-step guide** (e.g., from YouTube or a repair manual) to avoid damaging the door panel.

4. **Inspect the Door Mechanism** While replacing the grommet, take the opportunity to check for **worn lock rods, corroded bushings, or damaged wiring** that may require attention.

5. **Consider Professional Help if Needed** If the door trim is difficult to remove or you lack confidence in disassembly, a mechanic can install it for **$50 $100 in labor**, which may be worth the convenience.

**Final Verdict:** **Proceed with replacement** if the grommet is failing, as it s a **simple, low-risk repair** that protects your door s functionality and longevity. Prioritize quality over price to ensure long-term reliability.

Details:

Parts Geek - For 2007 - 2011 Mercedes CLS550 Door Lock Rod Grommet Genuine 28779TMQT 2008 2009: Review Fitment Notes to Ensure Proper Fit condition: New Brand: Notes: Front 12 Month Warranty OEM Vehicle.

part #: 28779tmqt price

• $17.23

specifications carlockiio:

• for makes: Mercedes
• for years: 2007-2011
• mpn: 28779tmqt
• part type: Door Lock Rod
• manufacturer warranty: 12 Month Warranty
• notes: Door Lock Rod Grommet Front
• years: 2007 2008 2009 2010 2011
• application: Mercedes Cls550 Door Lock Rod Grommet
• cs-sku: 400

shipping carlockiio:

• transit: 3-7 Days
• cost: $0.00
• class: Standard
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx

returns carlockiio:

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

offer carlockiio:

• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock
• started: April 21, 2026

general carlockiio:

• Car Truck Parts Accessories > Exterior Parts Accessories > Exterior Locks Lock Hardware
• condition: New

payments carlockiio:

• other
• credit card: Mastercard
• wallet: Google-pay

seller carlockiio:

• # reviews: 329464
• city: Austin, Texas
• rating: 98.8%

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