fits model: Aviator. make: Lincoln. year: 2020–2025.

( Manufacturer Part Number: LC5B-S21533-AA ), ( Oe/oem Part Number: Lc5z 78222a01 C / Lc5z78222a01c ), ( Bundle Listing: No ), ( Color: Black ), ( Features: Easy Installation ), ( Fitment Type: Direct Replacement ), ( Placement On Vehicle: Rear, Left, Rearward ), ( Type: Rear Retainer ), ( Material: Plastic )
The **Lincoln LC5B-S21533-AA 2020 2025 Aviator Rear Left Door Window Glass Rearward Channel** is a precision-engineered component designed specifically for the luxury Lincoln Aviator, a flagship SUV known for its seamless blend of cutting-edge technology, opulent interiors, and refined performance. This rearward channel, part of the vehicle s sophisticated window glass system, plays a critical role in ensuring smooth, quiet, and reliable operation of the rear left door window. Crafted from high-grade materials, this component is engineered to withstand the demands of daily use while maintaining the vehicle s sleek, aerodynamic profile. The channel features a durable, corrosion-resistant design that aligns perfectly with the door frame, providing a snug fit that minimizes noise and prevents misalignment during window movement. Its integration with the power window mechanism ensures effortless operation, whether the window is raised, lowered, or parked at an intermediate position. The channel s precise construction also contributes to the vehicle s overall sound insulation, enhancing the cabin s acoustic comfort a hallmark of Lincoln s commitment to premium craftsmanship. Whether the Aviator is navigating city streets or cruising on open highways, this component ensures that the rear left door window functions with the same level of precision and reliability as the rest of the vehicle s sophisticated systems. For owners and technicians alike, this part exemplifies the meticulous attention to detail that defines Lincoln s approach to automotive excellence.
### **Pros and Cons of Buying a Replacement Rear Left Door Window Glass (Lincoln LC5B-S21533-AA, 2020 2025, Aviator Model)**
#### **Pros:**1. **Improved Visibility and Safety** A clear, properly functioning window ensures unobstructed rear visibility, which is critical for safe driving, especially when reversing or checking blind spots.
2. **Enhanced Comfort and Convenience** A smooth-operating window reduces noise, drafts, and condensation, improving the interior climate and passenger comfort.
3. **Prevents Further Damage** If the existing glass is cracked, chipped, or malfunctioning, replacing it early can prevent water leaks, electrical shorts (if the window motor is involved), or structural weakening of the door.
4. **Maintains Vehicle Resale Value** A well-maintained vehicle with all functional components holds its value better than one with neglected or broken parts.
5. **Professional-Grade Fit and Finish** OEM (Original Equipment Manufacturer) parts like this one are designed to match the exact specifications of the vehicle, ensuring a seamless installation and appearance.
6. **Long-Term Reliability** High-quality glass from the manufacturer is less likely to warp, crack prematurely, or fail compared to aftermarket alternatives.
7. **Warranty Coverage** If purchased from an authorized dealer or through Lincoln s official parts program, the glass may come with a warranty, providing peace of mind against defects.
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#### **Cons:**1. **Cost** OEM replacement parts can be expensive, often ranging between **$200 $500 or more**, depending on labor and additional components (e.g., window regulator, motor, or seals). Aftermarket options may be cheaper but could lack durability.
2. **Labor Intensity** Replacing a door window glass requires disassembling the door panel, removing trim pieces, and potentially replacing the window regulator or motor if they are damaged. This can take **2 4 hours** of professional labor, adding to the total cost.
3. **Potential for Additional Repairs** If the window regulator, motor, or tracks are worn out, they may need replacement simultaneously, increasing expenses. A mechanic should inspect these components before proceeding.
4. **Time and Inconvenience** The process involves removing the door panel, which may require the vehicle to be off the road for an extended period, especially if done at a dealership.
5. **Risk of Improper Installation** If not installed correctly, the new glass may not seal properly, leading to drafts, water leaks, or electrical issues. This underscores the importance of using a qualified technician.
6. **Limited Availability of Aftermarket Alternatives** While aftermarket glass can be cheaper, finding a high-quality, OEM-compatible replacement may be difficult, and some parts may not fit perfectly without modifications.
7. **Environmental and Disposal Concerns** Glass and associated components (e.g., rubber seals) may require proper disposal, and some recycling options may not be readily available.
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### **Conclusion:**Replacing the rear left door window glass on a **2020 2025 Lincoln Aviator (LC5B-S21533-AA)** is a **necessary repair** if the existing glass is damaged or malfunctioning. The benefits such as improved safety, comfort, and vehicle integrity far outweigh the drawbacks in the long run. However, the **high cost and labor requirements** make it a significant investment.
If the glass is **minorly cracked or chipped but still functional**, some owners may opt for temporary fixes (e.g., clear tape or plastic covers) as a short-term solution. But for **structural cracks, stuck windows, or leaks**, replacement is the best course of action.
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### **Recommendation:**1. **Verify the Need for Replacement** Have a trusted mechanic inspect the glass, window regulator, and motor to confirm whether the glass alone needs replacing or if additional components are failing.
2. **Choose OEM Over Aftermarket** For the best fit and longevity, **purchase the genuine Lincoln part (LC5B-S21533-AA)** from an authorized dealer or a reputable online parts supplier.
3. **Get Multiple Quotes** Compare prices from **dealerships, independent auto glass shops, and mobile repair services** to find the best balance between cost and quality.
4. **Consider Professional Installation** Unless you have experience with automotive repairs, **have a certified technician perform the replacement** to ensure proper sealing and functionality.
5. **Check Warranty Options** If the vehicle is still under warranty, some manufacturers may cover window glass replacements if the failure is due to a defect.
6. **Budget for Potential Additional Repairs** If the window regulator or motor is worn, allocate extra funds for these replacements to avoid future issues.
**Final Verdict:** **Proceed with replacement if the glass is severely damaged**, as it is a critical safety and comfort component. Prioritize **OEM quality and professional installation** to maximize durability and avoid future problems. The long-term benefits of a properly functioning window justify the upfront cost.
TRANSMISSION: 10-SPEED AUTOMATIC SELECT SHIFT / 10R60. BODY TYPE: SPORT UTILITY 4-DOOR SUV. MILEAGE: 70K MILES. DRIVE TYPE: FOUR WHEEL 4WD.