H-4 Bulbs with a Round (P45t style) Base

• Available in Standard Clear or Rainbow Foul Weather/Rain or Fog replacements

H-4 Bulbs with 3-prong (p43t style) Base

• These bulbs are the most common H-4 bulbs used in motorcycle applications. Direct replacement for stock H-D® H-4 bulbs

H-3 Bulb for Spotlamps

• For Spotlamps including P/N 2145, 2354, and 2355