SureFit LED Bulb - H4 / 9003

DENALI SureFit™ LED Bulbs are engineered to deliver modern performance with true plug‑and‑play simplicity. Designed with the same size and geometry as stock halogen bulbs, SureFit LEDs install effortlessly into your factory housings—no adapters, modifications, or guesswork required. Just remove your halogen bulb and drop in SureFit for an instant upgrade. DENALI SureFit Bulbs are currently available in four bulb types: H4/9003, H7, H8/H9/H11, & HB3/9005.

Building upon DENALI's proven LED technology, SureFit bulbs emit a crisp white 6000K color temperature for improved visibility and a modern look that delivers twice as many lumens as a standard halogen bulb. SureFit bulbs deliver 40% more usable light output than halogen bulbs, helping you see farther and react sooner in low-light conditions. Built for durability and consistent performance, DENALI SureFit bulbs are the easiest way to upgrade your lighting without compromising fit, aim, or reliability.

Be Smart When Choosing LED Bulbs. Not all LED bulbs are built to the same standard and many options from careless manufactures can be downright dangerous - throwing stray light all over the road that can distract other motorists. We have painstakingly engineered and tested our bulbs to ensure that they maintain a crisp cut-off, where intended, and direct the light only where it should be. That said, it is not feasible to test and certify our bulbs in every possible headlight housing available. For that reason, the bulbs do not meet the FMVSS108 standard for use in on public roadways. These bulbs are intended for off-road use only in motorcycle, ATV, Snowmobile, and race applications.