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TYC 20-6778-90 Headlight Assembly - Left
Overview of TYC Regular Left Headlight Assembly for Buick Lucerne
The TYC Regular left headlight assembly (part number 20-6778-90) is designed specifically for Buick Lucerne models. This complete headlight assembly includes halogen bulbs and features clear and amber lenses for optimal exterior lighting performance.
- Complete headlight assembly with bulbs included
- Halogen bulb types for low beam, high beam, and daytime running lights
- Clear and amber plastic lens for durability and visibility
- Plastic housing material for lightweight and corrosion resistance
- Designed for the left side of Buick Lucerne vehicles
Detailed Product Features and Specifications
This TYC Regular headlight assembly (20-6778-90) is engineered with a plastic lens and housing to provide a balance of durability and weight savings. The assembly includes halogen bulbs for low beam, high beam, and daytime running lights, ensuring consistent lighting performance. The clear and amber lens colors meet exterior lighting requirements, enhancing both visibility and signaling functions. This part is a complete assembly, ready to install on the left side of Buick Lucerne models, providing a direct replacement for the original equipment.
TYC Regular Product Line Information
The TYC Regular product line offers reliable, factory-quality replacement parts designed to meet or exceed OEM standards. This line focuses on providing complete assemblies with included bulbs, making it a practical choice for Buick Lucerne owners seeking a straightforward replacement without additional purchases. The 20-6778-90 headlight assembly is part of this line, ensuring compatibility and consistent performance.
Common Applications and Problem Resolution
- Replacement for damaged or cracked left headlight lens or housing
- Restores proper low beam and high beam lighting functionality
- Fixes issues with non-functioning daytime running lights
- Improves exterior lighting visibility and signaling compliance
- Addresses moisture or fogging problems inside the headlight assembly
Installation Notes and Tips
Installation of the TYC Regular left headlight assembly (20-6778-90) is designed to be a direct fit for Buick Lucerne vehicles. Ensure the vehicle is turned off and the battery is disconnected before beginning installation. Carefully remove the old assembly, disconnecting all wiring harnesses, and replace it with the new complete assembly. Verify all halogen bulbs are securely seated and test all lighting functions before finalizing installation.
Quality Assurance and Warranty
TYC Regular parts are manufactured to meet industry standards for fit, form, and function. The 20-6778-90 headlight assembly undergoes quality checks to ensure durability and performance. While specific warranty details are not provided here, TYC typically offers limited warranties on their replacement lighting products. Consult the product packaging or manufacturer resources for exact warranty information.
| Brand | TYC |
| Part Number | 20-6778-90 |
| Position | TYC Regular, Left |
| Bulbs Included | Yes |
| Lens Color | Clear, amber |
| Bulb Type | Halogen |
| Lens Material | Plastic |
| Housing Material | Plastic |
| Components Included | Complete assembly |
| Daytime Running Light Bulb Type | Halogen |
| High Beam Bulb Included | Yes |
| High Beam Bulb Type | Halogen |
| Low Beam Bulb Included | Yes |
| Low Beam Bulb Type | Halogen |
| Other Side | 20-6777-90 |
| Position | Left |
This part fits 18 vehicles. Search below:
| Year | Make | Model | Submodel | Body Type | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Buick | Lucerne | Super | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2011 | Buick | Lucerne | CXL | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2011 | Buick | Lucerne | CX | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2010 | Buick | Lucerne | CX | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2010 | Buick | Lucerne | CXL Special Edition | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2010 | Buick | Lucerne | Super | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2010 | Buick | Lucerne | CXL | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2009 | Buick | Lucerne | CX | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2009 | Buick | Lucerne | CXL | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2009 | Buick | Lucerne | Super | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2008 | Buick | Lucerne | Super | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2008 | Buick | Lucerne | CX | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2008 | Buick | Lucerne | CXS | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2008 | Buick | Lucerne | CXL | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2007 | Buick | Lucerne | CXL | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2007 | Buick | Lucerne | CXS | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2006 | Buick | Lucerne | CXS | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
| 2006 | Buick | Lucerne | CXL | Sedan | Left | Components Included: Complete Assembly; Other Side: 20-6777-90; TYC Regular |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.