D4R xenon bulb – mercury-free for reflector

The D4R and the D4S share mercury-free technology, 35W power, and the same D4 ballast. Their difference is purely optical: the D4S is intended for projector lens optics (clear glass), the D4R for reflector optics (integrated opaque shield). This black shield painted on the glass creates the beam cutoff required in a reflector. The keying tabs on the base prevent swapping. Check the type of optics before ordering from AGM Vision.

The D4R is mainly used on Toyota and Lexus vehicles equipped with reflector xenon optics: Toyota Corolla (certain versions), Prius (2nd and 3rd generation), Camry and Lexus ES. It is a very specific reference for the Japanese market. European and American models of these same brands more often use the D4S (projector optics). Check the service booklet or remove the bulb to confirm the reference. AGM Vision stocks the D4R in France.

No, the D4R is not compatible with a D2 ballast. Although both are reflector versions, the D4R uses a mercury-free chemistry, with ignition and operating voltages specific to the D4 ballast. Installing a D4R on a D2 ballast can cause malfunction, flickering, or damage to the bulb and the ballast. Each D series has its own electrical specifications. Strictly comply with the series matching between the bulb and the ballast.

Yes, the D4R is one of the rarest xenon references on the market. It combines two rarity factors: mercury-free D4 technology (already less widespread than D1/D2) and the reflector R version (a minority compared with S projector optics). Traditional auto stores rarely stock it. AGM Vision is one of the few distributors to keep this reference in permanent stock in France in order to guarantee immediate availability. Shipping within 24/48h with manufacturer warranty.

The Toyota Prius (2nd and 3rd generation) uses the D4R, because Toyota was a pioneer in adopting mercury-free xenon bulbs (D4 series) as early as 2006, and these generations of Prius use reflector optics rather than a lens. This technical choice allowed a simpler and less expensive headlight design, while still benefiting from xenon lighting. The following generations switched to full LED. For replacement, use exclusively a D4R. AGM Vision offers the compatible reference.

A D4R in good condition lights up in less than 5 seconds, reaches full brightness in 15-20 seconds, and maintains a stable color. Signs of wear include: color shift (turning toward pink or purple), prolonged ignition time, flickering, or unexpected shutoffs. A D4R older than 3-4 years has probably lost 20 to 30% of its luminous flux, even if it still works. Compare the brightness on both sides: a visible difference indicates that both need to be replaced. AGM Vision guarantees its bulbs.