All our PR21/5W BAW15D 1157 LED Bulbs

The PR21/5W with a BAW15D base is a staggered bayonet dual-filament format, used for rear brake/tail lights in the red version. The "R" in PR21/5W indicates that the bulb is originally tinted red. The PR21/5W Angel red LED bulb offers a bright red LED light.

The P21/5W uses a BAY15D base with symmetrical pins, while the PR21/5W uses a BAW15D base with pins offset by 15°. This offset prevents inserting a white bulb into a socket intended for red. The two bases are not interchangeable.

The PR21/5W is a rare format used on the rear lights of certain European vehicles, where the tail light and the brake light share the same transparent optical unit (without a red lens). The red bulb then replaces the lens to produce the regulatory color.

Yes, the PR21/5W Angel red LED bulb directly replaces the original bulb thanks to the same BAW15D base. The red LED offers instant lighting (faster than halogen) and better visibility for drivers behind you.

Yes, like the original bulb, the PR21/5W LED is dual-filament: it lights up dimly in tail light mode and at full power in braking mode. The difference in intensity between the two modes is clearly marked, for good visibility by other drivers.

Yes, that is precisely its role: the red tint of the LED replaces that of the lens that is missing on transparent optics. The red color is integrated into the LED itself, producing a bright red light that complies with the regulatory requirements for brake lights and tail lights.