H4/9003 Halogen Headlight Bulb, 4000K Warm White, OEM Replacement, 2 Pack | 12V 55W High/Low Beam, Vacuum Precision Optical Blue Film Technology, Up to 1800H Lifespan, Road Legal, Plug and Play

H4/9003 Halogen Headlight Bulb, 4000K Warm White, OEM Replacement, 2 Pack | 12V 55W High/Low Beam, Vacuum Precision Optical Blue Film Technology, Up to 1800H Lifespan, Road Legal, Plug and Play

• 【Vacuum Precision Optical Blue Film Technology】Engineered with a micron-level optical blue coating to reduce the deep-yellow appearance of conventional halogen bulbs and deliver a clearer, less-yellow warm-white beam. The coating also acts as a thermal insulator with enhanced UV protection, effectively slowing oxidation, yellowing, and premature aging of the headlight housing. Please note: this bulb delivers an enhanced warm white halogen output — not the cool white appearance of HID lighting
• 【Brighter Output & Extended Lifespan vs. Standard Halogen】Experience a visibly brighter, cleaner 4000K beam at approximately 1,900 lumens — up to 300% brighter than standard halogen bulbs. A reinforced filament and optimized halogen gas fill work together to deliver 1.5–2× the lifespan of conventional bulbs, meaning fewer replacements and more miles of reliable performance
• 【Road Legal & Street Ready】Designed to support safe and compliant road use through a controlled beam pattern, balanced light output, and dependable electrical performance. By maintaining the essential characteristics expected for on-road driving, it delivers responsible illumination for everyday driving conditions
• 【OEM Direct Fit — Installs in 2 Minutes】No modifications, no tools, no hassle. Simply remove your old bulb and plug in the new one for a seamless OEM-fit upgrade. Caution: Avoid touching the glass surface — skin oils can cause uneven heating and reduce bulb lifespan
• 【Verify Fitment Before Purchasing】Confirm the bulb size for the light you're replacing: low beam, high beam or fog light. Sizes may vary by position and vehicle trim. For replacing halogen bulbs only. Not compatible with factory LED headlight assemblies. Use Amazon's fitment tool as a guide, then check your original bulb number or owner's manual. Need help? Contact Partsway Support with your vehicle's year, make, model, trim and light position.