TYC 20-16812-01 Headlight Assembly - Left

Left Headlight Assembly for Audi A4, A5, S4, S5

Restore the front lighting on your Audi with this TYC Regular left headlight assembly, part number 20-16812-01. It is built for HID-equipped vehicles and matches the original lamp layout with clear and amber lens sections, integrated LED daytime running light, side marker, and park lamp functions.

Key Features

• TYC Regular headlight assembly for the left side
• Fits HID applications with D3S low beam and high beam bulb type
• Clear and amber lens with PC plastic lens material
• PP plastic housing for the lamp assembly
• Integrated LED daytime running light, front side marker light, and park lamp bulbs
• Front signal light uses halogen PWY24W bulb type
• SAE/DOT compliant
• Bulbs and HID ballast are not included

Detailed Description

This TYC 20-16812-01 headlight assembly is a direct-fit exterior lighting replacement for select Audi models with HID lighting and without curve lighting. It is listed for the left position on 2012-2017 Audi A5 Quattro, 2012-2017 Audi S5, 2014-2016 Audi A4, 2014-2016 Audi A4 Quattro, 2014-2016 Audi S4, 2012-2014 Audi A5, and 2013 Audi A4, A4 Quattro, and S4 built from 05/09/2012. This part cross-references Audi 8T0 941 043 E and Partslink AU2502181 for the same application.

TYC Regular focuses on OE-style replacement lighting with the correct housing shape, lens design, and bulb configuration for factory-style fitment. For Audi A4, Audi A5, Audi S4, and Audi S5 owners replacing a damaged or cloudy left headlamp, 20-16812-01 provides the correct assembly format for HID systems without curve lighting.

Common Reasons for Replacement

• Cracked or broken left headlight housing
• Clouded, yellowed, or damaged lens
• Failed daytime running light, side marker, or park lamp function
• Water intrusion or moisture inside the lamp
• Restoring proper forward lighting after collision damage

Installation Notes and Tips

Verify HID headlamp configuration and confirm the vehicle does not use curve lighting before ordering. This assembly is for the left side only and is intended for Audi models listed above. Bulbs are not included, so transfer or source the correct HID D3S low and high beam bulbs as needed, along with the required HID ballast if applicable to your vehicle setup. Check connector condition, aim the headlamp after installation, and confirm all lighting functions before returning the vehicle to service.

Quality Assurance

This TYC Regular headlight assembly is SAE/DOT compliant and built as a replacement lighting component for factory-style fitment on select Audi applications. The part number 20-16812-01 is specified for the left side and matches the listed interchange references for the same vehicle coverage.