Alpha Series 9003/H4: product and installation guide
Alpha Series A1004-S is the single-bulb 9003/H4 option with 6000K white light and a listed 9–32V input. Check the installed H4/9003 marking, retaining arrangement and cooling clearance before ordering.
- SKU: A1004-S
- Package: One 9003/H4 LED bulb
- Colour: 6000K white
- Listed input: 9–32V
- Cooling: Copper PCB, internal fan and liquid-filled thermal tubes
Compare the installed bulb marking, connector, retainer and available space before removing the original lamp. Test the appropriate lighting functions and check the final beam aim after fitting. A bulb-base match alone does not establish suitability for every housing or lighting circuit.
Frequently Asked Questions
Is A1004-S supplied as one bulb or a pair?
This is the single-bulb listing. The existing notice states SOLD INDIVIDUALLY – SINGLE BULB ONLY.
Is A1004-S the same specification as Alpha-H4?
No. This A1004-S listing specifies 6000K and 9–32V. Alpha-H4 is a different product with its own specifications. Use the exact SKU when matching an existing bulb.
Does a motorcycle or truck model name prove this bulb fits?
No. Check the actual lamp position and H4/9003 marking, along with its connector and retaining hardware. A vehicle model can have different lighting equipment or replacement housings.
What white-light colour does this exact product use?
This exact listing specifies 6000K white light. Match the SKU and product generation when replacing a bulb; another Alpha Series product can use a different colour specification.
Does this bulb product replace a complete factory LED headlight?
It is intended for a compatible serviceable-bulb application. A factory LED assembly can have integrated electronics and light sources that do not use a replaceable bulb of this type. Inspect the installed equipment first.
Will these bulbs prevent every dashboard warning or flicker?
Results depend on the actual lighting circuit and connections. Diagnose any warning or flicker before selecting an additional module, and check the physical lamp application separately.
What warranty applies to this exact Alpha Series product?
This product carries a lifetime limited warranty. The existing terms and exclusions for the purchased SKU apply.
What should I check before fitting this bulb?
Compare the mounting and retaining arrangement, connector and space behind the lamp. The original dust cap must fit correctly, and cooling parts or attached electronics need adequate clearance. Check the final beam aim after installation.