Automotive lighting designed to upgrade standard halogen fittings with brighter, xenon-white illumination, Argo W21/5w Bulb. Drivers gain greater confidence in poor weather thanks to crisper white output that improves contrast on wet roads. Are these bulbs the right fit for your car's sockets and lighting needs?
⚡ At a Glance
- • Brightness: Higher output than standard halogen lamps for improved road illumination
- • Best for: Drivers wanting a simple upgrade to halogen headlights, DRLs or reverse lights
- • Not ideal for: Vehicles requiring LED-specific fittings or CAN-bus error correction modules
Xenon-white 6000K colour temperature delivers a crisp, neutral-white beam. UV-Quartz coated glass enhances durability across high and low temperatures.
Improved visibility in adverse weather, with xenon-white 6000K output
A 6000K xenon-white colour temperature produces a neutral white beam, which differs from yellow halogen light by increasing perceived contrast. Higher luminous output relative to standard halogen lamps helps illuminate road markings and hazards more clearly.
Brighter, whiter light makes it easier to spot hazards in rain or snow, reducing eye strain on longer journeys.
Enhanced durability and temperature resistance, with UV-Quartz coated glass
High-precision UV-Quartz glass construction and a specialised coating are engineered to withstand both high and low temperature extremes. The material resists thermal stress better than basic glass used in standard bulbs.
Greater tolerance to temperature swings reduces premature failure risk, giving more reliable performance in varied climates.
Quick upgrade with no rewiring, with plug-and-play compatibility
Designed as a direct replacement for common halogen fittings, the wedge base and standard electrical rating allow removal of existing bulbs and direct insertion of the replacements. No additional wiring modifications are required for standard halogen setups.
A simple swap is possible during routine bulb changes, so fitting takes only minutes and no specialist tools are necessary.
✨ The 4 Key Reasons for Argo W21/5w Bulb
- 6000K xenon-white - Produces crisp white light, improving contrast on wet roads
- UV-Quartz glass coating - Resists temperature swings for longer bulb lifespan in extremes
- Plug-and-play fit - Fits existing halogen sockets without wiring, simple quick swap
- 12-month warranty - Offers backed replacement support for peace of mind after purchase
📋 Technical Details at a Glance
- Bulb type: W21/5W (7443/T20)
- Pack quantity: 2 bulbs
- Light colour: Xenon white
- Colour temperature: 6000K
- Rated voltage: 12V
❓ Frequently Asked Questions
Q: Are these bulbs easy to fit into my car?
A: Yes. Simply remove the existing halogen bulbs and replace with these plug-and-play units; no wiring modifications are required for standard halogen fittings.
Q: Can these bulbs be used for headlights and daytime running lights?
A: Yes. Suitable for upgrading halogen lamps including headlights, DRL daytime running lights and reverse lights as stated in the product description.
Q: Do the bulbs come with any warranty?
A: A 12-month warranty is included, offering replacement support for customers during the first year after purchase.
🏆 Our Verdict
These bulbs suit drivers seeking an affordable, straightforward upgrade from yellow halogen light to a crisper xenon-white beam for better on-road contrast. UV-Quartz construction and a plug-and-play fit make them a practical choice for many halogen fittings. The included 12-month warranty and rugged glass construction suggest sensible long-term value for regular motorists.
