Product Specifications

K2C H4 LED Headlight Bulb 85W Dual Beam with External Driver

The K2C H4 from the Red Storm Series is built for drivers who want a compact body with real, road-usable brightness. It uses high-brightness GC-7035 LEDs and an external driver to keep power delivery steady and temperatures under control. The system runs on DC 9–18 V, is non-polarity for easy wiring, and carries an IP67 rating so rain, dust, and frequent washing won’t get in the way of performance. As an H4 dual-beam model, it integrates both high and low beams in one bulb and is tuned for a standard, glare-controlled light pattern that upgrades visibility without overwhelming oncoming traffic.

High-Brightness GC-7035 LEDs

At the core are GC-7035 emitters selected for consistent output and color. Their efficiency helps the bulb reach the power and lumen levels shown in the spec sheet while maintaining a controlled hotspot and clear cutoff appropriate for H4 reflector housings. The chipset also contributes to long service life, listed as ≥3000 hours on the product graphic, making it a dependable choice for daily use and long night drives.

Up to 300% Brighter Road Visibility than Halogen

The visual comparison in the product graphic highlights how the K2C beam reveals more of the lane ahead than a conventional halogen bulb. Signs and lane markings appear earlier, and foreground illumination is stronger, helping reduce strain in poor weather. This upgrade is achieved without resorting to uncontrolled scatter; the light is shaped for a standard road pattern so you see farther down the road without unnecessary glare.

Glare-Controlled Standard Light Pattern

The optical layout is designed to mimic the filament position of H4 halogen while taking advantage of LED source size. The result is a clean cutoff on low beam and a concentrated high-beam hotspot that reaches down-road. This keeps oncoming comfort in mind while giving the driver crisp contrast on pavement, road edges, and signage.

IP67 Protection for All-Weather Driving

The bulb structure and interfaces are engineered to IP67, so water spray, slush, and dust won’t interrupt operation. Whether the vehicle faces summer storms or winter road grime, sealing around the housing and connectors keeps the electronics protected for consistent output over time.

External Driver for Stable Power

Separating the driver from the lamp body removes a heat source from the LEDs and allows the circuitry to run cooler. The external driver helps maintain stable wattage during extended operation, which supports the “initial” and “stable” power figures listed in the data sheet. It also simplifies routing inside tight headlamp cavities because the compact driver can be positioned for airflow and easy tie-down.

Small Size with 85W High Power

Despite its compact footprint, the K2C H4 delivers serious output. On the high beam, rated initial/stable performance is 5812/4714 lm at 80.79/68.22 W. On the low beam, rated initial/stable performance is 3832/3018 lm at 80.50/65.44 W. This combination—small body and high power—means an immediate step up from halogen without a complicated retrofit.

Advanced Structural Thermal Design

The product graphic breaks down the internal architecture, showing the LED light source, heat-spreading elements, and an active cooling fan working with an aluminum alloy heat sink. This layered approach moves heat away from the emitters quickly so brightness stays consistent during long night drives. Thermal stability also supports longevity and minimizes output droop.

Enhanced Visibility vs. Halogen

A side-by-side road scene in the graphic demonstrates how the K2C illuminates lane markers and distant objects with greater clarity than a halogen reference. The stronger hotspot and fuller foreground help drivers judge distance and road texture sooner, which is especially useful on dark rural routes and poorly lit urban streets.

Canbus Decoding • 99% No-Error Performance

The decoding function shown on the dial graphic indicates broad vehicle compatibility. The K2C is designed to be Canbus ready with a 99% no-error target, minimizing dashboard warnings and flicker on vehicles with bulb-out detection. This greatly simplifies installation for shops and DIY users alike.

No Radio Interference • Error-Free • No Flicker

Additional icons on the strip emphasize EMC-friendly operation and a steady light output. The electrical design aims to avoid radio noise in common automotive bands and to keep the beam stable at idle or during alternator load changes, so the driver sees a smooth, consistent light without pulsing.

Socket-Specific Design for Precise Aim

While certain single-beam variants of the K2C family feature a 360° adjustable chuck, the H4 model uses a fixed chuck per the specification table. This fixed, socket-specific approach is intentional for dual-beam accuracy, helping preserve the cutoff on low beam and the hotspot aim on high beam without extra adjustment steps.

Uniform Light Distribution Across Scenarios

The montage in the graphic shows the beam working in rain, on wet asphalt, and in general night driving. The distribution is tuned to provide a clear center hotspot with supportive side fill so drivers can read road edges and reflective signage with ease. The compact size also helps with fitment in a wide range of headlamp housings.

The K2C H4 combines GC-7035 LED power, an external driver, IP67 protection, and a compact, thermally robust structure to deliver a significant visibility upgrade over halogen while respecting beam standards. With Canbus decoding and stable, flicker-free output, it is a practical, high-output choice for daily driving and long-distance night use.