Dorman 1590566 Headlight Assembly - Left

OE-Style Left Headlight Assembly

This Dorman headlight assembly is a direct replacement for the left side on select Buick LeSabre models. It is reverse-engineered to match the original headlight’s fit, appearance, and function while helping reduce dealership replacement costs.

• Fits 2000 Buick LeSabre, left, with fluted high beam surface and cornering lamps
• Fits 2001-2004 Buick LeSabre, left, with cornering lamps
• Fits 2005 Buick LeSabre, left, with cornering lamps, to 9/20/04
• Halogen bulb technology with bulbs included
• Clear plastic lens and plastic housing
• Street legal design for road use
• 12.8-volt electrical specification

Detailed Product Overview

Dorman 1590566 is built for drivers who need a replacement headlight assembly that matches the original equipment layout on Buick LeSabre applications. The clear lens, halogen bulb setup, and OE-style housing are selected to restore proper forward lighting and maintain the factory look on the vehicle. This part number 1590566 is a practical option when the original headlamp is damaged, cloudy, or no longer performing as expected.

This part cross-references Eagle Eye GM346-B101L and is also associated with 20-5874-01 and 1221-0512L for the same application.

Common Problems This Part Can Address

• Cracked or broken left headlight lens
• Dim or uneven forward lighting
• Moisture intrusion from a damaged headlamp assembly
• Restoring the original appearance on a Buick LeSabre
• Replacing a worn halogen headlight assembly

Installation Notes and Tips

Verify the vehicle’s model year, left-side position, and cornering lamp configuration before ordering. This assembly is intended for Buick LeSabre applications listed above, including the 2000 Buick LeSabre with fluted high beam surface and cornering lamps, the 2001-2004 Buick LeSabre with cornering lamps, and the 2005 Buick LeSabre with cornering lamps through 9/20/04. Confirm bulb and connector alignment during installation and aim the headlight after mounting.

Quality Assurance

Dorman engineers this replacement headlight assembly to match the stock unit on specific vehicles through reverse engineering, helping deliver OE-style fit and performance for the Buick LeSabre. Part number 1590566 is built as a direct replacement lighting component for exterior use.