2Pcs Freightliner Cascadia Side Marker Turn Signal Lights Clear Lens Amber LED

Cracked lenses, yellowed housings, and dead incandescent bulbs are not just eyesores — on a Freightliner Cascadia running interstate routes, compromised side markers are a serious safety and compliance liability. This pair of clear-lens amber LED side marker turn signal lights restores full DOT-compliant visibility in a direct OEM-position drop-in, so you can get back on the road without a shop visit or wasted hours. Compatibility These side marker turn signal lights are purpose-built for 2008 through 2023 Freightliner Cascadia semi-trucks. Coverage includes both the Cascadia 113 and Cascadia 125 cab configurations, spanning day cab and sleeper variants across the entire modern Cascadia production run. The mounting footprint mirrors the factory position exactly, meaning no drilling, no bracket fabrication, and no wiring modifications are required. You receive one left-side and one right-side unit per order, giving you a complete matched set for both sides of the cab. Always confirm your specific cab trim level and OEM connector type before ordering to ensure a perfect fit with your rig's existing harness. Benefits • Instant-On Amber Visibility: Bright amber LEDs reach full output the moment power is applied — no warm-up lag like incandescent bulbs — making your rig significantly more visible during lane changes, merges, and tight dock maneuvers. • Clear Lens Styling: The optically clear polycarbonate lens keeps a sharp, modern profile while projecting maximum amber light output during the day and at night without color distortion or fading over time. • DOT-Compliant Performance: Engineered to meet Federal Motor Vehicle Safety Standards for side marker and turn signal lighting, keeping your Cascadia roadworthy and inspection-ready at every weigh station stop. • 30,000+ Hour LED Lifespan: Rated for over 30,000 hours of continuous operation, these LEDs dramatically outlast factory incandescent bulbs, reducing roadside breakdowns and unexpected replacement costs for owner-operators and fleets alike. • Direct OEM Plug-and-Play Fit: Factory connector compatibility means installation requires zero wiring modifications — simply unplug the old unit, plug in the new one, and secure it in the existing mounting position. • Fleet-Ready Durability: Sealed against road moisture, vibration, and temperature extremes common to long-haul trucking environments, these markers are built to survive the rigors of cross-country freight operations. Technical Specifications • Fitment: 2008-2023 Freightliner Cascadia 113 and Cascadia 125 • Quantity: 2 pieces per set (1 left, 1 right) • Light Source: Amber LED array • Lens Color: Clear polycarbonate • Emitted Light Color: Amber (SAE/DOT compliant) • Rated Service Life: 30,000+ hours • Function: Side marker and turn signal • Operating Voltage: 12V DC (standard commercial truck electrical system) • Installation Type: Plug-and-play, direct OEM connector fitment • Compliance: DOT Federal Motor Vehicle Safety Standards Materials and Build Quality The housing and lens of these Freightliner Cascadia side marker lights are constructed from impact-resistant polycarbonate, the same class of material used in premium OEM lighting assemblies. Polycarbonate offers significantly greater resistance to road debris impact, thermal cycling, and UV degradation compared to standard acrylic housings. The clear lens is treated to resist yellowing over years of sun exposure, maintaining light transmission efficiency well into the product's service life. Internal LED boards are mounted on thermally efficient substrates that manage heat dissipation effectively, which is critical for maintaining rated LED lifespan in sealed housings. Sealing gaskets and weatherproof construction protect the internal electronics from road spray, pressure washing, and the temperature extremes that long-haul trucking routes demand — from sub-zero northern winters to scorching desert summer runs. Installation Guide Installing these plug-and-play side marker lights on your Freightliner Cascadia takes under 30 minutes per side with basic hand tools. Start by parking the truck on a level surface and switching off the ignition completely to eliminate any risk of electrical shorts during the swap. Locate the existing side marker housing on the cab — it is secured by either a clip, screw, or quarter-turn fastener depending on your Cascadia's trim year. Release the fastener and gently pull the housing away from the cab panel. Reach behind the panel to access the OEM wiring harness connector and press the release tab to disconnect it from the old housing. Set the old unit aside. Take the new LED marker light and align it with the factory mounting position. Press the OEM connector from your harness firmly into the matching plug on the new unit until you hear or feel it click securely into place. Position the housing into the cab panel opening, align the mounting tabs or screw holes, and secure the fastener to factory spec. Do not overtighten plastic fastener points. Repeat on the opposite side. Once both units are installed, restore power to the truck and test both side markers and turn signals from the cab to confirm full function before your next departure. What's in the Box • 1x Left-side amber LED side marker turn signal light (clear lens) • 1x Right-side amber LED side marker turn signal light (clear lens) • OEM-style wiring connectors pre-attached Why Shop With Us We source lighting components verified for fitment on commercial trucks and fleet vehicles, because we understand that a wrong-fit part on a working rig costs far more than the part itself. Every listing is built around real vehicle compatibility data, not generic catch-all fitment claims. Our product pages give you the specification detail you need to order confidently — and our customer service team is equipped to handle commercial vehicle inquiries, not just passenger car questions. Stop running a compromised rig. Order your 2008-2023 Freightliner Cascadia amber LED side marker turn signal lights today and restore DOT-compliant visibility before your next dispatch. Add both to your cart now — your fleet deserves parts that work as hard as you do.