P21 4W LED Bulbs For Cars CAN Bus 27 SMD 3030 Indicator Stop Light

Upgrade your vehicle’s lighting with the P21 4W CAN Bus LED bulbs. Designed for cars, these high-power bulbs deliver precise, bright illumination while staying compatible with CAN bus systems to minimize bulb-out warnings and avoid hyper-flash. With 27 SMD 3030 LED chips per bulb and an aluminium heatsink, you get dependable performance, long life, and clearer visibility in every driving condition.

Main Description

These P21/4W bulbs are engineered for a wide range of vehicle lighting applications, including sidelight, indicator, tail/stop, brake, reverse, and DRL. Each bulb emits up to 900 lumens, delivering a total of 1800 lumens for paired installation. The 12V DC operation and 15W consumption offer robust brightness without excessive power draw. Built with a sturdy heatsink body, the bulbs stay cool under operation and can endure temperatures from -40°C to +90°C, ensuring reliable performance in diverse climates.

Available in White and Red, these bulbs are plug-and-play and polarity-free, designed to snap into the same socket as your original incandescent bulbs without wiring or modification. Anti-hyper flash technology helps maintain stable operation on vehicles with CAN bus monitoring. The compact, universal fit is compatible with many vehicles, and the cross-reference 566 (P21/4W) BAD15d (1122 7225 12594 621652 637227) helps confirm compatibility with your light housing.

Materially, the bulbs feature an aluminium heatsink for efficient heat dissipation, prolonging lifespan up to 50,000 hours. Each lamp uses 27 SMD 3030 LED chips arranged to produce 360-degree illumination, improving visibility for other drivers and enhancing driving safety. Please verify your vehicle’s bulb type and housing fitment before purchasing, as the bulb size differs slightly from stock/OEM bulbs.

Benefits & Tips

• Improve daytime visibility and signaling by upgrading to bright, uniform 360-degree LED light output.
• Use for sidelights, indicators, tail/stop, brake, reverse, and DRL to consolidate lighting upgrades with a single bulb type.
• If the bulb initially doesn’t illuminate, try reversing the polarity (recommended troubleshooting step) and ensure proper seating in the socket.

Product Specifications

• Bulb type: P21/4W Canbus LED bulb
• LED chips: 27 SMD 3030 per bulb
• Voltage: 12 V DC
• Power: 15 W per bulb (1800 lm total for two bulbs)
• Luminosity: 900 lm per bulb
• Color options: White / Red
• Materials: Heatsink aluminium
• Working temperature: -40°C to +90°C
• Waterproof rating: IP65
• Lifespan: Up to 50,000 hours
• CAN bus compatibility: Yes (anti-hyper flash)
• Fitment notes: Cross-reference 566 (P21/4W) BAD15d; universal fitment but verify housing compatibility

Package includes:

• 2x High Power Canbus 566 P21/4W BAZ15d 15W 27 SMD 3030 LED Bulbs
• White / Red Sidelight Fog Daytime Running Tail Stop Brake Revers Light Lamp (as listed)

Warnings / Reminders

• Due to slight size differences from stock/OEM bulbs, confirm your vehicle’s bulb type and light housing compatibility before buying.
• If the LED light does not work after installation, try reversing the polarity.
• Ensure proper seating in the light socket to avoid intermittent operation.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

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