NAPA offers the widest range of automotive lighting and bulbs. Choosing the right replacement bulb for your car can be overwhelming. Whatever the technology used in your car, we’ve got you covered with a wide selection of halogen, incandescent, LED, or HID bulbs. From headlights to brake lights, we offer all types and all styles of lighting While H1, H3, and H7 bulbs all have just one filament, the H4 is a dual-filament bulb. Instead of only one wire producing light, the H4 bulb has two. This allows the H4 bulb to serve as both the main beam and dipped beam headlights in one single bulb. With other types of headlight bulb, you’ll need to purchase two separate bulbs—one for the Vehicle Conversion. All 24V Bulb Kits H1 Bulb Kits H4 Bulb Kits H7 Bulb Kits HB3 Bulb Kits HB4 Bulb Kits Panel Bulb Kits Universal Bulb Kit. H1 Bulb Kits SZKAIDAG 24000LM 9005/HB3 H11/H9/H8 LED Headlight Bulbs Combo, 600% Brightness LED Bulbs, 6500K Cool White, High Beam and Low Beam Replacement Conversion Kit, Plug and Play, Waterproof, Pack of 4. $8999. Save 10% with coupon. FREE delivery Fri, Dec 29. After I install A&B, will I be able to swap the H4 bulb in the H4 conversion kit with the following bulb . PIAA 15962 - PIAA H4 Bulb Twin Pack - Super Plasma GT-X Series - Quadratec I purchased the PIAA H4 Super Plasma GT-X Bulbs BEFORE I realized that 99 Jeeps have factory sealed bulbs : Thanks for everyone's advice. Martin . HIKARI H1 LED Headlight Male Adapter Plug Single Diode Converter Wiring Connecting Harness Socket Diode Extension Converter Cable Lines for Headlights Bulb Cables Accessories - 2 Pack 4.1 out of 5 stars 470 Osram H4 Night Breaker Laser Duo Box 64193NBL-HCB Light Next GEN (60/55W, 12V, Set of 2 Bulb,yellow ,white) - Halogen 3.7 out of 5 stars 955 KNY H4 Car Headlight Bulb 12v 130/110W P43T K-470 Xenon Gold Auto Rally Halogen headlamp bulbs High Wattage Bright Automotive Powerfull High Visibility Bulbs (Set of 2) Headlight & Tail Light Conversion Kits › HID Kits HYB Slim Digital HID Ballast 55W 12V For HID Bulb H11 H7 H8 H9 H4 H1 9005 9006 9007 Universal Fit (Pack of 2) H13 to H4 Adapter (PAIR) - Headlight Conversion Cable - For 7 inch LED Headlight on Jeep Wrangler JK TJ or Trucks Motorcycle Car leds headlights bulbs Brand: SuiTech 4.4 4.4 out of 5 stars 416 ratings ORACLE H1 - VSeries LED Headlight Bulb Conversion Kit Original price $125.95 - Original price $125.95 ORACLE H4 - VSeries LED Headlight Bulb Conversion Kit

h1 to h4 bulb conversion