Diode Dynamics · New
Diode Dynamics 921 XPR LED Bulb - Red (Single)
MPN DD0395S · Store SKU dioDD0395S
Supplier stock checked 11/7/2026, 8:48:45 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
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Product details
FeaturesIntense red LED illumination.Direct replacement compatible with Scion xB 3rd brake light bulb.Plug and play no modification with factory 921 bulb size.Instant on/off for faster response.OverviewInstant Brake. The factory incandescent 3rd brake light bulb on most vehicles lights up in a glow which takes a moment to turn on. A modern LED upgrade provides instant response which can alert other drivers on the road earlier while also providing a modern LED appearance. This third brake light LED is a great upgrade in both style and function.Quantity. As different trim levels often come equipped with different third brake lights we have listed bulbs individually here. Please double-check on your vehicle and select the quantity needed to replace all of your bulbs.Correct Color. You'll see that we only offer a red color option which is correct to SAE/DOT red" requirements. This provides the most output through the red lens of the 3rd brake light as the red lens acts as a filter only allowing red light through.Brightness. All Diode Dynamics LED lighting is rated with accurate measured lumen figures not calculations or guesses. We test the true output in-house and provide you the real numbers to compare.Reliability. Diode Dynamics LEDs are built with constant-current inductive circuitry along with transient suppression. While more expensive than simple bulbs this allows Diode Dynamics LEDs to last for years with no flickering or failure." FeaturesIntense red LED illumination.Direct replacement compatible with Scion xB 3rd brake light bulb.Plug and play no modification with factory 921 bulb size.Instant on/off for faster response.OverviewInstant Brake. The factory incandescent 3rd brake light bulb on most vehicles lights up in a glow which takes a moment to turn on. A modern LED upgrade provides instant response which can alert other drivers on the road earlier while also providing a modern LED appearance. This third brake light LED is a great upgrade in both style and function.Quantity. As different trim levels often come equipped with different third brake lights we have listed bulbs individually here. Please double-check on your vehicle and select the quantity needed to replace all of your bulbs.Correct Color. You'll see that we only offer a red color option which is correct to SAE/DOT red requirements. This provides the most output through the red lens of the 3rd brake light as the red lens acts as a filter only allowing red light through.Brightness. All Diode Dynamics LED lighting is rated with accurate measured lumen figures not calculations or guesses. We test the true output in-house and provide you the real numbers to compare.Reliability. Diode Dynamics LEDs are built with constant-current inductive circuitry along with transient suppression. While more expensive than simple bulbs this allows Diode Dynamics LEDs to last for years with no flickering or failure. The factory incandescent 3rd brake light bulb on most vehicles lights up in a glow which takes a moment to turn on. A modern LED upgrade provides instant response while also providing a modern LED appearance. Direct replacement for your factory bulb.
Manufacturer fitment & guides
Check DD0395S against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
