Cascadia LED Driver Headlamp Assembly - Premium Left Side (2018-2025) - Replaces A66-01405-004

Restore superior nighttime visibility and modern styling to your rig with this premium Cascadia LED Driver Headlamp Assembly by FleetPro Parts & Tires. Specifically engineered for the New Body Style (P4) Freightliner Cascadia (model years 2018 through 2025), this left-hand headlamp provides a high-intensity, crisp beam pattern that far exceeds the performance of standard halogen units. Manufactured with an impact-resistant lens and high-output LEDs, this assembly is designed to withstand the vibrations of the open road while keeping your path clearly illuminated. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for owner-operators and fleets across the Midwest and nationwide.

Maximize Safety: The Cascadia LED Driver Headlamp Assembly Advantage

This Cascadia LED Driver Headlamp Assembly is a high-end, "like-OEM" replacement that brings back factory-level clarity to your truck. Unlike lower-tier aftermarket lights that suffer from moisture fogging or weak projection, our premium FleetPro version features a fully sealed housing and integrated LED technology for a true plug-and-play installation. Note: This unit is designed specifically for the driver side (LH) and mounts directly into the factory bumper/hood configuration of your New Cascadia without the need for drilling or complex wiring modifications.

At FleetPro Parts & Tires, we prioritize safety-critical lighting components that meet or exceed strict commercial standards. This headlamp is a direct professional-grade replacement for major part numbers including Freightliner A66-01405-004, Detroit Diesel A6601405002, and Automann 564.46001LM. Don't drive with a dimmed or yellowed lens—upgrade to FleetPro premium quality today and see the road like never before.

Vehicle Fitment & Compatibility

This premium LED headlamp is a guaranteed fit for the following heavy-duty applications:

• Make: Freightliner
• Model: Cascadia (116 and 126 BBC Models)
• Years: 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
• Body Style: New Body Style (P4)
• Position: Left Side (Driver Side)

Direct Replacement & Cross-Reference Numbers:

This headlamp assembly serves as a direct exact-fit replacement for the following part numbers:

• Freightliner OEM: A66-01405-004, A66-01405-002, 35819
• Detroit Diesel: A6601405002
• Automann: 564.46001L, 564.46001LM, AUT56446001LM
• Newstar: FRT-A66-01405-004, S-29602, S29602
• United Pacific: 35821

Technical Specifications

• Light Source: Full High-Output LED
• Quality Tier: Premium Replacement (Like-OEM)
• Installation: Direct Plug-and-Play (Factory Harness Compatible)
• Lens Color: Clear (UV-Resistant Polycarbonate)
• Position: Left Side (LH)
• Brand: FleetPro Parts & Tires