Specification:<br /><br />1.Color: Red<br />2.LED Type: 3528 SMD<br />3.Dimension: 47mm Length, 19mm Diameter<br />4.Application: Tail Stop\/Brake Light<br />5.Interchange Part Number: 7443,W21W,7505,T20,7440,7444<br />6.Important: Our bulbs come with Standard Base, NOT CK Type. Don't put standard bulbs into CK type sockets. It may pop the fuse or blow the bulb. Or the bulb will not blink and light up red ONLY. Use a electroprobe to check where the two Positive Points locate in your stock socket. You can also buy a pair of standard sockets to modify the wiring.<br /><br />Features:<br /><br />1.High performance LED, long lifespan, superior illumination &amp;amp; stability<br />2.High luminous efficiency with high brightness light output<br />3.Environmental-friendly: energy saving, no UV and IR radiation, shock-proof and anti-corrosion.<br />4.Easy installation, just plug &amp;amp; play<br />5.Faster on\/off response time and vibration resistant<br />6.If the LED does not light up, simply flip it 180 degrees (reverse the polarity)<br /><br />Package Includes:<br /><br />1 x LED Bulb