Overview
The PIAA H10 Xtreme White Plus is a 45w replacement bulb rated 4000K, giving a cool white light for drivers who want road hazards and street signs to show up sooner than with a standard halogen bulb. The product is part number 15210 and uses an H10 base.
The Xtreme White Plus line is engineered for sustained performance where vibration and moisture protection is needed. Its XTRA Technology is designed to produce more light than the rated power. It is a universal fit bulb.
Key features
- Cool white output rated 4000K from a 45w bulb
- Designed to brighten road hazards and street signs, per PIAA
- Engineered for sustained performance under vibration and moisture
- XTRA Technology with a proprietary gas mixture and aerospace alloy filament
Choosing a cool white bulb
Cool white bulbs are chosen by drivers who want a crisp, bluish-white beam, often for better contrast on the road ahead. The color depends on the bulb design and the lamp lens, so the same bulb can look different in two vehicles. Before buying, check the base type on the old bulb and confirm the lamp is built for the H10 socket. A higher-output bulb generates more heat, so inspect the socket and wiring after the first few drives.
Vibration and moisture are common reasons bulbs fail early. Keep the lamp sealed, inspect the rubber boot for cracks and dry the socket before fitting a new bulb. Replace bulbs in pairs so both sides match, and handle the glass only by its base during installation. Clean the lens regularly, since road film and haze cut light output more than many drivers expect.
Specifications
| Brand | Piaa Lighting |
|---|---|
| Part number | 15210 |
| UPC | 722935152103 |
| Bulb base type | H10 |
| Wattage | 45w |
| Color temperature | 4000K |
| Light color | Cool white |
| Glass color | Clear |
| Bulb type | Replacement Bulb |
| Fitment | Universal Fit |
Vehicle fitment
Universal fit: the bulb is not tied to a year, model or trim, so the H10 base type is what has to match your socket.
This bulb is not sold for a particular vehicle. The H10 base is the only sizing reference, so confirm it against your socket before fitting.
What’s included
Confirm the quantity against the number of lamps you are replacing before ordering.









