GTR Ultra 3.0 H4 / 9003 white LED bulb pair
The GTR Lighting Ultra 3.0 H4 / 9003 pair combines 5750K white output with custom TST 7045 emitters. This is the GTR.LED810 model, supplied as two bulbs.
Its compact design and potted electronics are useful features to compare when choosing a replacement bulb. GTR’s Thermal Separation Technology manages heat around the emitters. Match the bulb body and wiring to the space behind your lamp, including its retaining mechanism and dust cover.
Exact-model specifications
- Part number: GTR.LED810
- Listed base family: H4 / 9003
- Package: two H4 Ultra 3.0 bulbs
- Colour temperature: 5750K white
- Supplier-rated raw output: 2,900 lumens per bulb
- Rated power: 43W per bulb
- Operating range: 9–40V DC
- Light source: Custom TST 7045
The supplier gives one per-bulb specification set rather than separate high- and low-beam ratings. Raw lumens describe source output; the installed beam depends on the housing, bulb position and aim.
What should I check when replacing an H4 bulb?
Compare the retaining hardware, connector and rear clearance with the lamp you have. Check both low- and high-beam operation and the installed aim according to the housing and installation instructions.
Installation accessories
Anti-flicker harnesses are optional and sold separately. Confirm the requirements of your existing lamp circuit before selecting one. The supplier’s package list for this model includes the two bulbs; additional tools or adapters are not listed as included.
Intended use
These bulbs are not compliant for public-road headlight use in the United States. Fog-light and other applications must meet applicable local requirements. Verify the intended application and local rules before installation.
