Philips H4 Ultinon Pro3021 LED Headlight Bulb for Car & Truck (LUM11342U3021X2) — 6000K Cool White

Upgrade night driving with the Philips H4 Ultinon Pro3021 LED — a plug-and-play, high-performance headlight solution that delivers crisp 6000 K cool-white illumination for safer, more confident driving. Designed for both 12V and 24V systems, this twin-pack improves road clarity, reduces glare, and resists heat for long-lasting performance. Backed by the official Philips manufacturer warranty and sold by Vlebazaar — a trusted marketplace known for secure checkout, fast delivery, and responsive customer support — you get premium lighting plus peace of mind.

Top Features

• Instant bright 6000 K cool-white light — clearer road detail and modern appearance.
• 12V / 24V compatibility — ideal for cars, SUVs, vans and light trucks.
• Plug-and-play H4 fitment — quick installation with standard sockets, no major modification.
• Optimized beam pattern — focused illumination for improved visibility without distracting oncoming traffic.
• Advanced thermal management — stable output and longer life under continuous use.
• Durable construction — precision lens and robust housing for reliable performance in varied conditions.
• Low power draw — efficient LED technology for cooler operation and vehicle electrical friendliness.
• Complete twin pack — two bulbs plus required drivers and mounting accessories for a full axle upgrade.
• Trusted brand — Philips engineering and quality control for consistent results.
• Vlebazaar reliability — secure purchase, careful packaging, and proactive customer support.

Technical Specifications

Why Buy From Vlebazaar?

• Authentic Philips products verified for quality and performance.
• Secure checkout, multiple payment options, and reliable packaging for safe delivery.
• Fast dispatch and tracking updates — we keep you informed from order to doorstep.
• Dedicated customer support to help with fitment questions, warranty claims, and returns assistance.
• Honest product descriptions and responsive after-sales service you can trust.

Who Should Buy This?

• Drivers wanting a major upgrade from halogen bulbs to brighter, whiter LED light.
• Owners of cars, SUVs, vans or light trucks using H4 sockets (12V or 24V systems).
• Commuters and night drivers who need improved road contrast and safety.
• Car enthusiasts seeking a modern, premium look for their vehicle’s front end.
• Anyone seeking a reliable, branded replacement backed by manufacturer support and a trusted retailer.

Frequently Asked Questions

Q: Will these bulbs fit my H4 headlight housing?

A: Yes — the Philips Ultinon Pro3021 is designed for H4 sockets. Most H4 housings accept this plug-and-play solution; however, some compact or sealed housings may need additional adapters or professional installation.

Q: Are these bulbs compatible with 12V and 24V electrical systems?

A: Yes — these bulbs are compatible with both 12V and 24V systems, making them suitable for cars and many light commercial vehicles. Confirm your vehicle’s electrical specification before purchase.

Q: Will I get a CAN-bus error on my dashboard?

A: Some vehicles with sensitive CAN-bus systems may show errors. In those cases, a CAN-bus adapter or error-cancelling resistor may be required. Contact Vlebazaar support for guidance specific to your vehicle.

Q: How durable are these LEDs and how do they handle heat?

A: Philips engineers the Ultinon Pro series with effective heat-management systems (heat sinks and robust build) to ensure stable light output and extended operational life under typical driving conditions.

Q: What warranty and post-sale support do I get?

A: The product is covered by Philips’ official manufacturer warranty (terms on packaging). Vlebazaar provides post-sale assistance for installation advice, warranty claims, and returns — contact our support team for help.

Q: Can I install these myself?

A: Many users install the bulbs themselves with simple plug-and-play steps. If you’re unsure or your vehicle has a non-standard housing, we recommend professional installation to ensure correct beam aim and secure fitment.

Q: Are these legal for road use?

A: Regulations vary by region. Philips manufactures these to high quality standards, but we advise you to check local laws regarding aftermarket LED headlight usage and alignment before installation.