Depo 331-1971L-UC Tail Light Assembly - Left

Left Tail Light Assembly for Grand Marquis

This Depo tail light assembly is a direct-fit exterior lighting replacement for the left side of the vehicle. It is listed for 2003-2011 Mercury Grand Marquis applications and references OEM 8W3Z13405A, making it a practical choice when replacing a damaged or non-functioning rear lamp.

Key Features

• Tail light assembly for the left rear position
• Fits 2003-2011 Mercury Grand Marquis, left
• Depo part number 331-1971L-UC
• Cross-references FO2800173C for the same application
• OE-style replacement for exterior lighting repair

Product Details

Built for the Mercury Grand Marquis, this left tail light assembly restores the rear lighting function and factory-style appearance of the vehicle. The Depo 331-1971L-UC is cataloged for 2003-2011 Grand Marquis models on the left side and is identified against OEM 8W3Z13405A. If you are replacing a cracked lens, faded housing, or a lamp with electrical failure, this part provides a direct replacement path for the rear lighting assembly.

Common Issues This Part Can Address

• Broken or cracked left rear tail lamp lens
• Water intrusion or moisture inside the housing
• Dim, intermittent, or non-working rear lighting
• Faded or damaged exterior lighting appearance
• Failed inspection due to rear lamp damage

Installation Notes and Tips

Verify the vehicle year and left-side fitment before installation. Compare the existing lamp to the new assembly and confirm connector and mounting points match the original unit. Test brake, tail, and turn functions after installation to ensure proper operation on the Mercury Grand Marquis.

Quality Assurance

Depo replacement lighting is cataloged to match the specified application and OEM reference for the 2003-2011 Mercury Grand Marquis. Part number 331-1971L-UC is listed for left-side use and supports a direct replacement approach for exterior lighting repair.