Auxbeam B21 Series 7440 LED Bulbs Amber Yellow Built in Resistor CANBUS Error Free Anti Hyper Flash 7440A 7440NA 7440AL 7440LL 7441 992 W21W WY21W Blinker Bulb 600% Super Bright Turn Signal Light

CANBUS ERROR FREE: Super compatible for most Vehicles. No hyper flash, no errors, no warning. With built-in CANBUS system, these 7440 amber bulbs can directly alleviate decoding problems without trouble to prepare external resistors. Note: Auxbeam offers 1-year warranty. For some super few sensitive models like Jeep, Chrysler, Chevrolet, GMC, Dodge, RAM and Volkswagen, extra resistors may be needed or message us to get.

600% EXTREMELY BRIGHT: Sequencing 36PCs Upgraded high brightness 3030 SMD chips precisely around each 7440 led bulb, providing 3500K Amber Yellow light for turn signals. Stronger light penetration output for 40% more visibility than ordinary leds. Instant-on response without warm-up time, 360° illumination without dark spot, brighter and safer when turning.

TURN SIGNAL ONLY, NO DUAL FUNCTION: This 7440 amber led bulb with resistor supports only turn signal light. When used as turn signal bulbs, the 7440 led bulb with built in resistor flash "amber-off-amber-off", making it easier to see from a distance. Note: Please do not use if your original bulb has two modes or switchback: turn signal + daytime running light or other combination.

4-LAYER COOLING SYSTEM: IP68 waterproof and dustproof. The built-in stable current IC driver avoids digital or VHF radio signal interference. The latest cooling system - 12,000RPM silent fan + Copper cooling ring + 16PCs heat sinks + 6063 aviation aluminum lamp body directly doubles heat dissipation.

360°FULL CLEAR BEAM: Each 7440 led bulb provides 360° full illumination without dark spot or shadow. Compatible for both US standard rather than CK sockets. Fit socket 7440, 7440A, 7440NA, 7440AL, 7440LL, 7441, 992, W21W, WY21W, etc. No polarity, no drilling, no wiring, no damage, just Plug and Play. If any questions or flashing issues, please message us for free solutions.

SPACE ATTENTION: The length of B21 series 7440 bulb is about 2.44in/62mm, so the bulb is longer than a halogen 7440 bulb. Please make sure there is enough installation space before purchase. For Chevrolet Silverado, Custom Trail Boss, The front turn signal light is 7443 rather than 7440 bulb, please do not try this 7440 bulb.

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