AUDI 80A839431A Rear Left Door Window Glass Channel Seal SQ5

( Manufacturer Part Number: 80A839431A ), ( Color: Multicolor ), ( Material: Rubber ), ( Vintage Part: No ), ( Placement On Vehicle: Left, Rear ), ( Type: Window Run Channel ), ( Oe/oem Part Number: 80a839431c / 80a839431 / 80a-839-431-c ), ( Features: Waterproof ), ( Universal Fitment: Yes ), ( Country Of Origin: Germany )

Review AUDI Sq5 Rear Left Side Door Window Glass Run Channel Seal Oem fits Q5 2018–2025

The **Audi 80A839431A rear left door window glass channel seal** for the **2018 2025 Q5 and S Q5** models is a precision-engineered rubber component designed to ensure a perfect seal between the glass panel and the door frame, maintaining optimal weatherproofing, noise insulation, and structural integrity. Crafted from high-quality, durable **EPDM (ethylene propylene diene monomer) rubber**, this seal is engineered to withstand the demanding conditions of daily driving, including exposure to UV radiation, temperature fluctuations, and moisture, while resisting cracking, swelling, or degradation over time. Its smooth, contoured profile is meticulously molded to conform seamlessly to the door s glass channel, preventing drafts, water ingress, and road noise from compromising the cabin s comfort and climate control efficiency. The seal s robust construction also plays a critical role in reducing wind noise and enhancing the vehicle s overall acoustic performance, contributing to a quieter, more refined driving experience. Whether navigating city streets or cruising on highways, this seal ensures a tight, consistent fit, protecting against environmental elements while maintaining the door s smooth operation. Ideal for both original equipment replacement and aftermarket upgrades, this Audi-specific part adheres to strict manufacturing tolerances, guaranteeing compatibility with the Q5 s advanced door mechanisms and glass runners. Its long-lasting durability and reliable performance make it an essential component for preserving the vehicle s resale value and ensuring a premium driving experience.

### **Pros and Cons of Buying a Replacement Rear Left Door Window Glass Channel Seal for a 2018 2025 Audi Q5/SQ5 (Part #A839431A)**

1. **Prevents Water Leakage** A damaged or deteriorated seal allows water to seep into the door, leading to rust, electrical issues, or interior damage. Replacing it ensures a proper seal and maintains the car s structural integrity.

2. **Improves Door Operation** A worn seal can cause the door to stick, squeak, or not close smoothly. A new seal restores proper function and reduces wear on the door mechanism.

3. **Extends Door Lifespan** Constant exposure to moisture and debris accelerates seal degradation. Replacing it early prevents further deterioration of the door frame, hinges, and window tracks.

4. **Maintains Resale Value** A well-sealed door contributes to the car s overall condition. Potential buyers notice and appreciate attention to detail, which can positively impact resale value.

5. **Easy Installation** The seal is typically a straightforward DIY replacement, requiring only basic tools (screwdriver, pry tool, adhesive if needed). No major disassembly is usually required.

6. **Cost-Effective** Replacing the seal is far cheaper than dealing with rust damage, electrical shorts, or window malfunctions caused by prolonged neglect.

7. **OEM Quality** Audi s original part ensures a proper fit and durability, reducing the risk of premature failure compared to aftermarket alternatives.

8. **Prevents Mold and Odors** Moisture trapped behind a damaged seal can foster mold growth, leading to unpleasant smells inside the cabin. A new seal mitigates this risk.

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1. **Labor Time (If DIY)** While simple, removing the door panel, window regulator, and trim carefully takes time and patience. Mistakes can lead to further damage.

2. **Potential for Overlooking Underlying Issues** If the window regulator or door hinges are worn, replacing just the seal may not fully resolve door operation problems.

3. **Adhesive or Sealant Dependency** Some seals require adhesive to stay in place. Improper application can lead to premature detachment or gaps.

4. **Limited Availability of Aftermarket Parts** While OEM parts are reliable, aftermarket seals may vary in quality. Cheap alternatives might not last as long.

5. **Accessibility Challenges** The door panel must be removed to access the seal, which can be cumbersome, especially for those without mechanical experience.

6. **Cost (If Purchased New)** While affordable, buying a new OEM seal (especially from Audi or a trusted dealer) may be pricier than aftermarket options.

7. **Risk of Over-Tightening** If the seal is pressed too firmly into place, it could warp or crack, reducing its effectiveness.

8. **Environmental Factors** Even with a new seal, prolonged exposure to UV rays, salt, or extreme temperatures can eventually degrade it over time.

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Replacing the rear left door window glass channel seal in your 2018 2025 Audi Q5/SQ5 is a **highly recommended maintenance task** if the current seal is cracked, swollen, or leaking. The benefits such as preventing water intrusion, improving door function, and avoiding costly repairs far outweigh the minor inconveniences of installation. The process is manageable for most DIYers with basic tools, and using an OEM part ensures long-term reliability.

If you re unsure about the condition of the seal, inspect it for signs of hardening, peeling, or water stains behind the door. If in doubt, consult an Audi specialist to confirm whether replacement is necessary. Given the relatively low cost and significant protective benefits, **proceeding with the replacement is a smart preventive measure** to maintain your vehicle s condition and performance.

- **Buy the OEM part (Audi A839431A)** for the best fit and durability.

- **Follow a step-by-step guide** (e.g., from Haynes or Audi service manuals) to ensure proper removal and installation.

- **Consider professional help** if you re uncomfortable with the process or suspect additional door issues.

- **Replace both door seals** (left and right) if one is already failing, as they degrade at similar rates.

- **Apply a high-quality adhesive** (like 3M 5200) if needed to secure the new seal properly.

Details:

Mileage: 99K MILES. Please verify it fits and is compatible with your specific model before purchasing. Color: SILVER L5L5-FLORETT METALLIC EXTERIOR / BLACK EI INTERIOR. This item has been previously used.

Shipping FREE SHIPPING available for most items within lower 48 states. Donor vehicle: 2018 AUDI SQ5 PRESTIGE 3.0L V6 TFSI QUATTRO AUTOMATIC TRANSMISSION.

part #: 80a839431a prices

• $60.99-$258.11

specifications vintagwinde:

• for models: Q5
• for makes: Audi
• for years: 2018-2025
• mpn: 80a839431a
• color: Multicolor
• material: Rubber
• vintage part: No
• placement on vehicle: Left, Rear
• type: Window Run Channel
• oe/oem part number: 80a839431c / 80a839431 / 80a-839-431-c
• features: Waterproof
• universal fitment: Yes
• country of origin: Germany

shipping vintagwinde:

• cost: $0.00
• type: Fixed
• class: Standard
• transit: 2-5 Days
• service: Standard

returns vintagwinde:

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

payments vintagwinde:

• other
• wallet: Apple-pay
• credit card: Visa

general vintagwinde:

• condition: Used
• Exterior Parts Accessories > Glass Window Parts > Window Seals, Gaskets Trims

seller vintagwinde:

• rating: 99.9%
• # reviews: 86550
• city: Traverse City, Michigan

offer vintagwinde:

• sold: 0
• best offers: True
• availability: In Stock
• started: April 9, 2026
• quantity: 1
• options: Ship-to-home

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