AutoGlowLED BAY9S H21W LED Backup Reverse Light Bulbs, 2-Pack
Quick Answer
AutoGlowLED BAY9S H21W LED bulbs are a 2-pack of Canbus no-error reverse, backup and signal lights delivering 3000LM per pair from 54x 3014 SMD chips with 360-degree illumination. They are listed as compatible with Audi A3 8V, Mercedes-Benz W210 and W211, and VW Passat B6 and Touran 1T2.
Key Features
- High-output 54-SMD design: Each bulb uses 54 pieces of 3014 SMD LED chips to produce 3000LM per pair with a 360-degree beam angle.
- Canbus no-error operation: Built-in constant current IC supports stable performance and helps avoid error messages on compatible vehicles.
- Automotive-grade aluminum body: The aluminum body with projection lens is designed for maximum light output and better heat distribution.
- IP68 waterproof rating: Rated IP68 for water resistance and designed to work on DC 12V.
- Instant, plug-and-play lighting: Lights up instantly without the slower warm-up of incandescent bulbs and installs as a plug-and-play replacement.
- Multiple applications: Suitable for backup reverse lights, daytime running lights, DRL, tail lights, brake lights and similar sockets.
Product Description
AutoGlowLED BAY9S H21W LED bulbs upgrade your vehicle's backup, reverse, DRL, tail or brake lighting with 54x 3014 SMD chips per bulb, 3000LM per pair and 360-degree illumination. The automotive-grade aluminum body with projection lens and built-in constant current IC supports stable, low-power performance and longer lifespan. Installation is plug and play, and 50W 6ohm load resistors may be required when used for turn signal blinker lights.
Compatibility
Audi A3 8V; Mercedes-Benz W210; Mercedes-Benz W211; VW Passat B6; VW Touran 1T2
Why Upgrade to LED?
Brighter Than Halogen

No Error Codes

Easy Installation

6000K Crystal White

Custom Fit

Premium Quality LEDs
Color Options

Blue

Crystal Blue

DEEP BLUE
Specifications
| Socket | BAY9S H21W |
| Lumen | 3000LM per pair |
| LED Type | 54pcs 3014 SMD per bulb |
| Beam Angle | 360 degree |
| Waterproof | IP68 |
| Working Voltage | DC 12V |
| Warranty | One year |
| Cross Reference | BAY9S, H21W, 64136, 12356 |
Frequently Asked Questions
Q: Will these bulbs cause error messages?
A: They are built with a constant current IC and are described as Canbus no-error. For turn signal blinker use, 50W 6ohm load resistors may still be required.
Q: What vehicles are these BAY9S H21W bulbs listed for?
A: The source lists Audi A3 8V, Mercedes-Benz W210 and W211, and VW Passat B6 and Touran 1T2.
Q: Are these bulbs waterproof?
A: Yes, they carry an IP68 waterproof rating and operate on DC 12V.
Q: How bright are these LED bulbs?
A: They produce 3000LM per pair with 54x 3014 SMD chips per bulb and a 360-degree beam angle.