Step1: Visit Osram Sylvania Lamp Replacement Guide to find out the bulb part # you need. (you will be redirect to Sylvania's website)
If you are not sure how to use this, please check the tutorial below
<!-- -->
Step 2: Check the Cross reference
Common Part Number Cross Reference Part Number 1157 BA15s 1016 1034 1076 1130 1154 1158 1493 2057 2357 2397 7528 1156 BAY15d 1073 1093 1129 1141 1159 1295 1459 1619 1651 1680 7506 7527 7507 BAU15s PY21W 7443 7444 7441 7440 T20 7440 992A (A refers to Amber) T20 *7443 bulb is interchangeable to all 7440 applications 3157 3057 3155 3357 3457 4157 3156 3056 3456 4156 *3157 bulb is interchangeable to all 3156 applications 168 194 147 152 158 159 161 168 184 192 193 259 280 285 447 464 555 558 585 655 656 657 1250 1251 1252 2450 2652 2921 2825 W5W 2825 2821 2823 2827 912 906 579 901 904 908 909 912 914 915 916 917 918 920 921 922 923 926 927 928 939 BA9s 64132 H6W 57 1895 53 182 257 363 1445 6253 64111 74 17 18 37 70 73 79 85 86 2721 211-2 (aka D42mm) 212-1 212-2 214-2 569 578 579 6418 (aka D36mm) 3423 3425 6411 6413 6423 6461 DE3423 DE3425 C6W DE3175 (aka D31mm) DE3022 3175 3022 Car Bulb Diagram (move over the mouse to enlarge)
Step 3: Choose the LED bulb type
Refractor LED bulbs High Power LED bulbs 1210 Single Chip SMD LED bulbs 5050 3-Chip SMD LED bulbs Output Each Emitter (lum) 20-22 lum 60-90 lum 30-45 lum 80-100 lum Lighting Angle 150 degree 180 degree 360 degree 360 degree Coverage Ok Very Good Excellent The Best Lighting Quality Concentrated Lighting Even Lighting Wide Angle Flood Lighting Wide Angle Flood Lighting Value vs. Price Good Value Better Value Excellent Value The Best Value Sample Picture 
Step 4: Which color should I choose?
Here are some recommendation:
Front Corner Lights Amber Yellow or Xenon White Rear Corner Lights Brilliant Red or Xenon White Parking Lights Xenon White Sidemarker Lights Xenon White License Plate Lights Xenon White (this is the only legal color for license plate lights) Backup Lights Xenon White or Ultra Blue Interior Lights Choose any color and express your personality!
