Description
Genuine Cadillac / GM OEM HID Xenon Headlight Assembly
Genuine OEM General Motors Cadillac CTS front left / driver-side HID Xenon headlamp assembly, part number 25897359.
This is an original factory Cadillac headlight designed for select second-generation CTS vehicles equipped with the compatible factory HID lighting system.
OEM Part Number
25897359
Also written as:
- 25897359
- GM 25897359
Part Type
Headlight / Headlamp Assembly
Position
Front Left / Driver Side
Lighting Technology
HID / Xenon
Bulb Type
D1S Xenon HID
Vehicle Fitment
Fits select:
2008 Cadillac CTS
Factory HID / Xenon-equipped applications.
2009 Cadillac CTS
HID / Xenon-equipped applications excluding incompatible V-Series configurations.
2010 Cadillac CTS
HID-equipped applications with factory HID option and without incompatible adaptive-headlamp configuration.
2011 Cadillac CTS
Select Base HID-equipped applications.
2012 Cadillac CTS
Select Base HID-equipped applications.
2013 Cadillac CTS
Select Base HID-equipped applications.
2014 Cadillac CTS Coupe
Select Base HID-equipped applications.
2014 Cadillac CTS Wagon
Select Base HID-equipped applications.
Exact compatibility depends on body style, trim level, factory lighting package, and original headlamp configuration.
Important Fitment Information
Cadillac used several different headlight assemblies during these model years.
The housings may look similar while using different:
- HID systems
- Adaptive-lighting systems
- Internal electronics
- Ballasts
- Bulbs
- Wiring
- Connectors
- Mounting configurations
Please verify the original headlight before ordering.
Exact OEM Number
25897359
Position
Driver / Left Side
Lighting
HID / Xenon
Configuration
Compatible non-adaptive HID application
Superseded / Replacement Numbers
GM replaced or superseded part number 25897359 through later factory numbers including:
- 15223843
- 22755331
- 19369528
- 19434254
- 19433122
These are part of the GM replacement chain for the compatible left HID headlamp assembly.
Matching Passenger-Side Headlight
This listing is for the:
LEFT / DRIVER SIDE
The passenger-side/right headlamp uses a different OEM part number and is not included with this listing.
HID Xenon Lighting System
This headlamp is designed for vehicles equipped with the factory Cadillac HID/Xenon lighting system.
The HID system can include components such as:
- D1S Xenon bulb
- HID ballast
- Igniter
- Headlight control electronics
- Wiring
- Electrical connectors
- Headlamp housing
A lighting malfunction may be caused by one or more of these components.
Proper diagnosis is recommended before replacing the complete headlight assembly.
Condition
Used Genuine OEM Cadillac / General Motors Part
This is an original previously installed factory headlamp assembly.
Normal signs of previous road use may include:
- Light lens scratches
- Road wear
- Surface marks
- Minor scuffs
- Dust
- Installation marks
- Normal cosmetic wear
Please inspect all product photographs carefully for the exact condition of:
- Lens
- Housing
- Mounting tabs
- Brackets
- Connectors
- Wiring
- Included bulbs
- Included modules
You will receive the actual headlight assembly shown in the listing photographs.
Included Components
This listing includes the Cadillac CTS left headlight assembly shown in the product photographs.
Bulbs, HID ballast, control modules, covers, wiring, brackets, and additional components are included only when physically shown in the listing photographs.
No additional components are included unless pictured.
Common Replacement Reasons
This headlamp assembly may be replaced due to:
- Cracked lens
- Collision damage
- Broken housing
- Damaged mounting tabs
- Internal moisture
- Electrical damage
- Failed internal wiring
- HID lighting problems
- Cosmetic deterioration
- Damaged projector components
Proper diagnosis is recommended when the problem is electrical rather than physical.
Installation
Factory-style replacement headlamp assembly for compatible Cadillac CTS applications.
Professional installation is recommended.
After installation, the headlamp should be properly mounted and aimed according to factory specifications.
All electrical connectors and HID components should be inspected before installation.
Part Number Verification
Before ordering, compare your original headlamp with:
25897359
Also verify:
- Left / driver-side position
- HID / Xenon lighting
- Non-adaptive configuration
- Electrical connectors
- Mounting tabs
- Vehicle body style
- Vehicle year
Matching the original OEM number provides the best method of confirming compatibility.
Warranty
Covered by the Oz’s Garage 30-Day Replacement Warranty.
Warranty does not cover damage caused by:
- Incorrect vehicle application
- Improper installation
- Collision damage
- Electrical shorts
- Wiring problems
- Water intrusion after installation
- Modification
- Tampering
- Physical damage after delivery
Labor, installation, diagnostic, programming, aiming, alignment, and related vehicle expenses are not covered.
Shipping
The headlight assembly will be carefully packaged to help protect the:
- Lens
- Housing
- Mounting tabs
- Projector
- HID components
- Electrical connectors
during transportation.
Usually ships within 1–2 business days.
🌎 Worldwide shipping available.
International buyers are responsible for applicable customs duties, import taxes, brokerage charges, and other local fees.
Why Buy From Oz’s Garage?
- Genuine OEM automotive parts
- Hard-to-find factory components
- Original Cadillac / GM parts
- 30-Day Replacement Warranty
- Worldwide shipping available
- Usually ships within 1–2 business days
