Depo K31-1188L-UCN Headlight Assembly - Left

2005 Grand Marquis Left Headlight Assembly

This Depo headlight assembly is a direct-fit exterior lighting replacement for the left side of the 2005 Mercury Grand Marquis. It matches the listed composite headlamp application and references OEM 5W3Z13008BA for fitment-focused ordering.

Key Features

• Brand: Depo
• Part number: K31-1188L-UCN
• Headlight assembly for the left side
• Composite-style exterior lighting replacement
• Fits 2005 Mercury Grand Marquis, left
• Cross-reference: FO2502239C

Product Details

Built for the 2005 Mercury Grand Marquis, left, this headlight assembly is specified for composite headlamp applications and aligns with OEM 5W3Z13008BA. Use K31-1188L-UCN when replacing a damaged, cloudy, or non-functioning left headlamp on a 2005 Mercury Grand Marquis. The fitment data confirms a single application: Fits 2005 Mercury Grand Marquis, left.

Common Reasons for Replacement

• Cracked or broken left headlight housing
• Lens haze or reduced forward lighting output
• Water intrusion in the headlamp assembly
• Failed reflector or internal lighting damage
• Restoring proper front-end lighting on a 2005 Mercury Grand Marquis

Installation Notes

Verify the vehicle is a 2005 Mercury Grand Marquis with a left-side composite headlight configuration before installation. Compare the existing unit to K31-1188L-UCN and confirm connector, mounting points, and lamp style against the original assembly and OEM 5W3Z13008BA reference.

Quality Assurance

Depo manufactures replacement lighting components for automotive applications, and this part is cataloged with OE reference information to support accurate selection for the 2005 Mercury Grand Marquis left headlight position.