Frequently Asked Questions About Sterling Acterra Truck Headlights

What year models of Sterling Acterra trucks do these headlights fit?

Our Sterling Acterra headlights are designed to fit 2003-2009 model years. The headlight assemblies are direct replacements for Sterling Acterra 5500, 6500, 7500, and 8500 series trucks. Always verify your specific truck's VIN and model number before ordering, as some late 2002 production models may also be compatible. If you're unsure about fitment, contact our support team with your VIN for verification.

Are these headlights DOT approved and street legal?

Yes, all Sterling Acterra headlights we carry are DOT compliant and meet FMVSS 108 standards for street legal use in all 50 states. Each headlight assembly includes proper DOT markings and certification. Our LED upgrade options also maintain DOT compliance while providing superior visibility. We recommend checking your local state inspection requirements if you're considering aftermarket LED conversions.

Do I need any special tools or modifications to install these headlights?

Installation is straightforward and typically requires only basic hand tools - a socket set, screwdrivers, and approximately 30-45 minutes per side. The headlights are designed as direct plug-and-play replacements using your existing wiring harness and mounting points. No cutting, drilling, or modifications are needed. However, we recommend disconnecting your battery before installation and having a second person help align the assembly during mounting.

What's the difference between sealed beam and composite headlight options?

Sealed beam headlights feature a one-piece design where the entire unit must be replaced when the bulb burns out, but they're typically more affordable upfront. Composite headlights use replaceable H11 or 9005/9006 bulbs, making long-term maintenance more cost-effective. Composite units also generally provide better light output and beam pattern. Most Acterra trucks from 2005 onwards came with composite headlights from the factory.

How do I prevent moisture buildup and fogging in my new headlights?

Quality headlights include proper venting and sealing to prevent moisture issues. During installation, ensure all rubber gaskets and seals are properly seated. Apply a thin layer of dielectric grease to the bulb connections to prevent corrosion. If you notice minor condensation after installation, running the headlights for 15-20 minutes typically clears it. Persistent fogging indicates a seal failure and should be addressed under warranty.