BICYACO 4x6 Inch LED Headlights 4-Pack — DOT-Approved Rectangular H4 Plug-and-Play, 6500K White

BICYACO 4x6 inch DOT-approved LED headlight 4-pack provides bright, waterproof, plug-and-play rectangular replacements for many classic trucks and cars.

These BICYACO rectangular LED headlamps are built as direct-fit upgrades for vehicles that use 4x6 inch lights, including many Peterbilt, Kenworth, Freightliner, Ford, and Chevrolet models. Each lamp combines a metal housing, integrated anti-flicker circuitry, and high-contrast optics to deliver a crisp 6500K white beam while meeting DOT standards for on-road use in the U.S. and Canada.

How do these headlights improve nighttime visibility?

These LED units produce a pure white 6500K color temperature and distinct high/low beam patterns that enhance forward visibility without scattering light into oncoming drivers' eyes. The sharp cut-off preserves contrast and road detail, helping you spot hazards earlier.

• 6500K pure white beam for clearer color rendering
• Defined cut-off line to reduce glare for other drivers
• High and low beam modes in a single assembly
• Higher lumen output versus typical halogen 4x6 lamps

Are these headlights easy to install on my truck or car?

Installation is designed to be straightforward: the kit includes four H4/9003/ HB2 wiring harnesses and step-by-step instructions so most installs take about 20 minutes per lamp. The integrated anti-flicker circuit eliminates the need for external error-cancelling modules in most applications.

• Plug-and-play H4 harnesses included for direct connection
• Pre-wired anti-flicker board to prevent strobing or errors
• No special tools required for standard 4x6 housings
• Complete 4-piece set plus instruction sheet

Will these lights withstand harsh weather and heavy use?

The housings are CNC-machined from aluminum alloy with a heat-dissipating fin design to manage temperature and extend LED lifespan up to roughly 50,000 hours. IP67-rated sealing and rigorous cold-weather testing mean these lamps resist water ingress and maintain operation in wet and winter conditions.

• IP67 waterproof rating for rain and road spray
• Aluminum alloy housing with heat fins for thermal control
• Durable optics and seals tested for cold weather
• Estimated long service life (tens of thousands of hours)

Which vehicles are compatible with these 4x6 LED headlights?

These rectangular bulbs fit the common 4x6 inch headlight openings used on many medium- and heavy-duty trucks, vans, SUVs, and older cars. They are listed compatible with numerous Kenworth, Peterbilt, Chevy, Ford, Freightliner, and classic models—but always verify your vehicle’s connector and mounting before purchasing.

• Fits many Kenworth models: T800, T400, T600, W900 series
• Compatible with Peterbilt 357, 378, 379 and similar trucks
• Works with Chevy trucks and SUVs like K5, K10, Suburban, Silverado
• Compatible with various older Ford and passenger models using 4x6 lamps

Who is this for: drivers who need reliable, DOT-compliant rectangular headlight replacements—truck fleets, classic car owners, and anyone upgrading from halogen to LED for better road illumination. Choose this BICYACO 4-pack if you want plug-and-play compatibility, rugged waterproof construction, and a crisp white beam that meets on-road safety standards without complex wiring or extra parts.