United Pacific | 36726 / 36727
Quad-LED replacement for factory-LED Cascadia trucks
Replace the selected-side headlight on a 2018–2022 Freightliner Cascadia originally equipped with factory LED headlights. This black assembly combines LED main beams, a 144-LED white DRL and a 15-LED sequential amber signal.
Factory LED only
This family is intended for trucks originally equipped with LED headlights, not factory halogen assemblies.
Distinct beam optics
Individual low-beam projectors and high-beam reflectors provide the main lighting functions.
Sequential turn signal
Fifteen amber LEDs form the sequential signal; 144 white LEDs provide the DRL.

Fitment & selection
Match the model and original equipment
- 2018-2022 Freightliner Cascadia
Match the original housing, mounting points and electrical connector before ordering.
Only for trucks originally equipped with factory LED headlights. Not for original halogen equipment.
Confirm 2023–2024 or later trucks with BTS before ordering; the detailed application table supports 2018–2022.
| Driver | 36726 | one assembly | OEM reference A66-01405-002, A66-01512-004, A6601512004 |
|---|---|
| Passenger | 36727 | one assembly | OEM reference A66-01405-003, A66-01512-003, A6601512003 |
Lighting details
Specifications for this assembly
| Low beam | 1,500 lumens; 5500K; 2.2A; 12V DC |
|---|---|
| High beam | 2,200 lumens; 5500K; 2.2A; 12V DC |
| Daytime running light | 144 white LEDs |
| Turn signal | 15 amber LEDs; sequential |
| Original equipment required | Factory LED headlights |
| Finish | Black Inner Housing |
| Package | One assembly for the selected side |
| Manufacturer standards listing | DOT/SAE; FMVSS 108. Correct application and beam aim are required. |
Installation & aiming
Fit the exact assembly and check the aim
Match the original factory-LED plug to the exact manual. Its connector diagram is viewed from the back of the vehicle’s existing male harness connector. Use that orientation for identification, then check every lighting function and beam aim after fitting.
Product questions
Before you order
Can this replace the original halogen headlights?
No. United Pacific specifies this family for trucks originally equipped with factory LED headlights. Match the original lighting system before ordering.
Is the price for a pair?
No. Each selection supplies one assembly for the driver or passenger side. Order both sides separately if you need a pair.
Product support
3-year manufacturer warranty
United Pacific lists a 3-year warranty for these exact part numbers. Keep your purchase information and contact BTS Lighting for help with a product issue.
























