Here's a list of the replacement bulbs for a 2007 ST......
2007 FORD Explorer Sport Trac
High & low beam headlamp
H13 (9008)
H13ST Silverstar High Performance Lighting: The Whiter and Brighter Halogen
H13XV XtraVision Halogen - The Brighter Light
Parking light
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
3457ALL
3457AST Silverstar Signal Lighting: Complete the Look: Crisp, Clean, Style
Front turn signal
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
3457ALL
3457AST Silverstar Signal Lighting: Complete the Look: Crisp, Clean, Style
Rear turn signal
4057LL
Tail light
4057LL
Stop light
4057LL
High mount stop light
921
921LL Long Life Upgrade: Up to twice the life of the standard lamp
Fog/Driving light
9145
9145ST Silverstar High Performance Lighting: The Whiter and Brighter Halogen
License plate
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Back up light
921
921LL Long Life Upgrade: Up to twice the life of the standard lamp
Front sidemarker
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Rear sidemarker
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Ash tray
161
Map light
168
578
Dome light
578
Step/Courtesy light
168
37
Trunk/Cargo area
578
921
921LL Long Life Upgrade: Up to twice the life of the standard lamp
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