Buying a Cadillac SRX headlight assembly by model year alone is risky. The 2010–2016 SRX was available with more than one factory headlight system, and a replacement made for the halogen configuration is not the correct choice for a vehicle built with HID/Xenon headlights.
Quick Answer
The Merton left-and-right headlight pair is listed for 2010–2016 Cadillac SRX vehicles with factory halogen headlights only. It is not compatible with factory HID/Xenon headlights. Before ordering, confirm the original lighting system, compare the current assemblies and OE references, and verify later-year applications when the numbers on the vehicle differ from the listing.
Why the Factory Lighting System Matters
Cadillac documentation confirms that the SRX could have projector-beam halogen headlights or Xenon HID headlights, depending on configuration. GM service information identifies the SRX HID system as RPO TT6 and states that installing HID headlamps in place of standard halogen units is not a supported upfit.
That makes the original lighting system—not just the lens shape or model year—the first fitment check.
| Your SRX configuration | Is this Merton pair the right type? | Next step |
|---|---|---|
| Factory halogen | Potentially, if the year and remaining fitment details match | Compare both original assemblies and reference information |
| Factory HID/Xenon or RPO TT6 | No | Choose a replacement specifically made for the factory HID system |
| Unknown or previously modified | Do not order yet | Verify the factory configuration by build information, VIN, or qualified support |
Five Checks Before You Order
1. Confirm Halogen, Not HID/Xenon
Do not identify the system by light color alone. Bulbs may have been changed by a previous owner, and an aftermarket lighting modification can make visual inspection misleading. Check the vehicle’s build information, the original assembly labeling, and the correct owner’s manual. If the vehicle information shows TT6, GM identifies that as the SRX HID system, so this halogen pair is not the correct replacement.
2. Confirm the Exact Vehicle Range
Merton lists this pair for 2010, 2011, 2012, 2013, 2014, 2015, and 2016 Cadillac SRX models with factory halogen headlights. Because OE service numbers can change across the range, owners of 2014–2016 vehicles should not use one older OE number as their only fitment test.
3. Confirm You Need a Pair
This listing contains both front headlight assemblies:
- Driver side: Left or LH
- Passenger side: Right or RH
- Package quantity: One pair
- Original system: Factory halogen only
A pair is useful when both housings are damaged, cloudy, or being replaced together. If only one side needs service, confirm that purchasing a pair matches your repair plan.
4. Compare the OE References Carefully
Merton lists OE references 22853872 and 22853873 for the set. Catalog data identifies 22853872 with the driver/left side and 22853873 with the passenger/right side for earlier SRX applications. Later-year service numbers can differ, so compare the current assembly, lighting system, mounting layout, and vehicle information instead of relying on a single number by itself.
5. Check for Previous Lighting Modifications
GM service information warns that aftermarket HID kits and other exterior-lighting changes can interfere with diagnosis. If the vehicle has been modified, identify the original factory configuration before choosing an assembly. Merton’s pair is a replacement for the factory-halogen configuration; it is not a halogen-to-HID conversion kit.
What the Merton Headlight Set Includes
According to the product page, SKU SSTHL250506505 includes:
- One driver/left/LH headlight assembly
- One passenger/right/RH headlight assembly
- Bulbs
- Clear lenses with chrome-style internal surfaces and amber side sections
- A new plastic assembly set
- A one-year Merton-listed warranty
The listing identifies the lighting technology as halogen. Although the product title references LED features, the key vehicle-side fitment requirement remains the original factory-halogen headlight system.
Review the complete image set and current specifications on the Merton Cadillac SRX headlight pair page.
A Dim or Failed Light May Not Require an Assembly
If one low beam stops working, diagnose the failure before replacing both housings. A GM bulletin covering listed 2010–2013 halogen SRX vehicles directs technicians to inspect the bulb and connector rather than automatically replacing the complete headlamp assembly for that condition.
A complete assembly becomes more relevant when the housing or lens is physically damaged, cloudy, discolored, cracked, loose, or affected by internal moisture. Electrical faults and previous lighting modifications should be diagnosed separately.
Final Fitment Checklist
- Is the vehicle a Merton-listed 2010–2016 Cadillac SRX?
- Did it leave the factory with halogen headlights?
- Is it not equipped with factory HID/Xenon or RPO TT6?
- Do you want both driver and passenger assemblies?
- Do the original assemblies and vehicle information agree with the listing?
- If the SRX is a 2014–2016 model or has different OE numbers, has fitment been confirmed?
If any answer is uncertain, send the year, trim, VIN, factory lighting type, and visible assembly numbers through Merton Fitment Help before ordering.
Frequently Asked Questions
Will this headlight pair fit a Cadillac SRX with factory HID/Xenon lights?
No. Merton lists this set only for vehicles with factory halogen headlights. GM identifies the SRX HID option as RPO TT6 and does not support replacing the standard halogen system with factory HID assemblies as a simple upfit.
Does the listing include both the driver and passenger headlights?
Yes. The package contains one left/driver/LH assembly and one right/passenger/RH assembly.
Are bulbs included with the assemblies?
Yes. The Merton product page states that bulbs are included. Compare the received components with the listing before installation.
Can I use these headlights to convert my SRX from HID to halogen?
Do not treat the set as a conversion kit. It is listed as a replacement for an SRX that originally came with factory halogen headlights. Wiring, controls, and vehicle configuration must match the original system.
How should a 2014–2016 SRX owner confirm fitment?
First confirm factory halogen lighting, then compare the original assemblies and their labels. Because OE service numbers can vary by year, send the VIN, year, trim, original lighting type, and visible OE numbers to Merton Fitment Help when the numbers differ from the product page.