Is H4 the same bulb as 9003?

Yes — H4, 9003, and HB2 are different names for the same dual beam headlight socket. One bulb carries both the high beam and the low beam, switching instantly between the two. That is why you will see this bulb listed under any of these names across brands; the fitment is identical, and the Auxbeam GX pair on this page replaces the stock H4/9003 halogen bulbs one-for-one.

How do I confirm my vehicle uses an H4/9003 bulb?

Two quick ways: use Select Your Vehicle and filter by year, make, and model — the tool shows exactly which sockets your vehicle uses; or email customer@auxbeam.com with your vehicle’s year, make, and model, and we will confirm the fitment before you order. The H4/9003 socket is one of the most widely used dual beam sockets worldwide, common on cars, motorcycles, and many trucks and SUVs.

What is the difference between an H4 dual beam bulb and separate high/low beam bulbs?

An H4/9003 socket is a dual beam design: one bulb produces both the high and low beam in the same housing, so replacing it upgrades both beams at once. Vehicles with separate sockets (for example, 9005 high beam + H11 low beam) use two independent bulbs per side — if that is your setup, our 9005+H11 LED combo kit covers both sockets in one order instead. Checking your current bulb’s markings or using Select Your Vehicle tells you which design your vehicle has.

Will these H4 LED bulbs cause error codes or flickering?

The built-in upgraded driver is CAN-Bus ready and compatible with 99% of vehicle computer systems with no error codes. A few sensitive models — such as Mercedes-Benz, BMW, Volvo, Dodge, Ford Fusion, Ford Focus, and Ford Escape — may flicker after installation; this is not a quality issue, and adding a decoder resistor resolves it. Based on our customer order records: the C10 decoder solves most decoder cases, including Ford, Jeep, and GMC; RAM, Mercedes-Benz, and BMW should choose C20 directly; for Dodge, start with C10 and switch to C20 if flicker persists. Both C10 and C20 decoder options can be added on this page when ordering, or bought separately from the Canbus decoder collection.

What if the cooling fan does not fit under my original dust cover?

The bulbs are mini sized at nearly 1:1 halogen dimensions, but the built-in cooling fan adds extra length, so on some vehicles the original dust cover cannot close fully after installation. The fix is simple: replace the stock cover with a silicone seal cap. For convenience, this listing offers two optional dust covers you can add to your order — a universal seal cap for 55mm–95mm housings and an H4/9003-specific seal cap — or browse our full dust cover collection for more options.

How bright are the GX H4 LED bulbs compared to halogen?

Each pair outputs 120W and 25,000LM — about 650% brighter than halogen bulbs — using upgraded 75 mil 7035CSP LED chips. In real driving terms, the beam reaches visibly farther and lights up road signs, lane lines, and roadside hazards much earlier than dim yellow halogen light, while the super-focused beam design keeps the light on the road instead of in oncoming drivers’ eyes.

How long do the H4 GX LED bulbs last, and are they waterproof?

The GX series bulbs are rated for 50,000 hours, supported by a 2-in-1 cooling system: a hollow-carved aviation 6063 aluminum heat sink and a 12,000RPM turbofan that exhausts heat quickly at 120W output. The bulbs also carry an IP68 waterproof rating and a wide operating temperature range, standing up to rain, dust, frost, snow, and car washes for years of nightly driving.

What warranty and shipping terms apply to this H4 LED bulb pair?

This pair is covered by a 2-year warranty (clearance items excluded) and a 30-day hassle-free return policy. Orders ship from our US warehouses, with free shipping on US orders over $19.90. If you have any questions about fitment or installation, email customer@auxbeam.com with your vehicle’s year, make, and model, or find more answers in our LED bulbs FAQ hub.

Auxbeam GX Series H4 9003 LED headlight bulbs pair with GX retail box and canbus driver on white background

120W super power GX series H4 9003 LED headlight bulbs poster with sports car glowing headlights at night

25000LM ultra high brightness LED chip of GX H4 9003 bulbs compared with an 18000LM ordinary LED bulb

650% brighter GX H4 9003 LED headlight bulbs showing 1700 feet road vision at night versus dim halogen bulbs

Safer drive precise beam position of GX H4 9003 LED bulb with cutoff chart, no dazzling glare at night

2 in 1 cooling system of GX H4 9003 LED bulb with pure copper tubes and silent turbo fan for 50000 hours lifespan

0 error smart decoding of GX H4 9003 LED bulbs, no dashboard warning and no hyper flash after installation

Vehicle compatibility of GX H4 9003 LED headlight bulbs fitting 99% of cars trucks and SUVs with upgraded driver

IP68 waterproof GX H4 9003 LED bulbs with strong light penetration on rainy and foggy night roads

Mini size comparison of GX H4 9003 LED bulb and halogen bulb showing identical 1:1 dimensions for easy install

H4 9003 LED bulb dimension chart of GX series with 360 degree adjustable mini base for 10 minutes installation

Auxbeam GX H4 9003 LED headlight bulbs kit with universal seal cap dust covers included in the package

Auxbeam GX H4 9003 LED headlight bulbs with H4 seal cap dust covers displayed beside the retail package

H4/9003 LED Headlight Bulbs – 120W 25000LM GX Series Dual Beam, 6500K Cool White | 2 Bulbs

Sku: GD002055 In Stock Sold out

~~$123.99~~ 19% Off

$99.99

Series

🆕GX Bi-Color Smart Series APP Control

R7 Series RGB

Auxbeam®Black Friday Cyber Monday Sale Starts Now! Use the coupon code below and save up to $70.
$12 OFF OVER $79 CODE: MS12
$35 OFF OVER $169 CODE: MS35
$70 OFF OVER $269 CODE: MS70
The deal will end on December 7th (Pacific Time: UTC-8)

Description
Shipping and Refund
Reviews

The Auxbeam H4/9003 LED headlight bulbs are a single-bulb dual beam upgrade: each H4 bulb handles both the high and low beam in one housing, delivering 120W and 25,000LM per pair in 6500K cool white — about 650% brighter than halogen. Twelve 75 mil 7035CSP LED chips per bulb sit on a 1:1 halogen-sized body driven by a built-in CAN-BUS system compatible with 99% of vehicles, while an aviation 6063 aluminum heat sink and a 12,000RPM turbofan keep the light stable for up to 50,000 hours — a direct plug-and-play replacement for cars, trucks, and motorcycles still running H4/9003 halogen bulbs.

MAIN FEATURES

650% BRIGHTER THAN HALOGEN

Each pair produces 120W and 25,000 lumens using upgraded larger 75 mil 7035CSP LED chips — a brightness flux that turns a dim, yellowish stock H4 halogen setup into a strong, clear night-driving beam.
6500K cool white light renders road signs, lane markings, and roadside hazards with far better contrast than halogen output, especially on unlit rural roads at night.
One bulb does both jobs: the dual beam socket switches between high beam and low beam instantly, so a single pair upgrades your entire front lighting without buying separate bulbs.

PERFECT BEAM PATTERN

The ultra-thin surface interval of the light pole brings the LED chips much closer to the original halogen filament position, projecting a super-focused beam with a wider and farther illumination range.
The focused design puts the light on the road instead of in oncoming drivers’ eyes — no blinding or glare, safer and more reliable for nightly driving.

BUILT-IN CAN-BUS

The new upgraded driver system is compatible with 99% of vehicle computer systems without triggering error codes.
Some sensitive vehicle brands (such as Mercedes-Benz, BMW, Volvo, Dodge, Ford Fusion, Ford Focus, and Ford Escape) may flicker after installation — this is not a quality issue, and a decoder resistor solves it. For convenience, this listing offers optional decoder packages (C10 or C20 model) you can add to your order: C10 solves most decoder cases, including Ford, Jeep, and GMC; RAM, Mercedes-Benz, and BMW should take C20 directly. Decoders are also available separately in our Canbus decoder collection.

10-MIN QUICK INSTALLATION

Nearly 1:1 mini size designed as the halogen original — twist out the old H4 bulb, twist in the LED, done in about 10 minutes per side with basic hand tools.
Note: the built-in cooling fan takes extra space. If your original dust cover cannot close over the new bulb, this listing offers optional seal cap dust covers you can add to your order — a universal cap for 55mm–95mm housings or an H4/9003-specific cap. More options are in our dust covers collection.

50,000 HOURS LONGER LIFESPAN

A high-efficiency cooling system pairs a hollow-carved aviation 6063 aluminum heat sink with a 12,000RPM powerful turbofan, pulling heat away from the chips fast enough to protect them at 120W output.
Efficient cooling prevents early brightness decay and supports a lifespan of 50,000 hours, with an IP68 waterproof rating against rain, dust, frost, and snow.

SPECIFICATIONS

LED Type: 7035CSP (75 Mil Larger LED)

Efficacy (2 pcs): 120W

LED Quantity (per bulb): 12 pcs (dual beam socket)

Effective Lumen (2 pcs): 25,000LM

Current Draw: 4.5A (±0.2A)

Operating Voltage: 9-13V

Color: 6500K Natural White

Material: Aviation 6063 Aluminum

Heat Dissipation Mode: Fan Dissipation

LED Lifetime: 50,000 hours

Waterproof: IP68

Ambient Operating Temperature: -45°C ~ 150°C

PACKAGE INCLUDED

H4/9003 LED headlight bulbs × 2 (dual beam — high and low beam in one bulb)

CONFIRMING YOUR BULB SIZE

• Not sure your vehicle uses an H4/9003 socket? Use Select Your Vehicle to filter by year, make, and model in seconds, or browse the full LED headlight bulbs catalog by bulb size.

International Shipping

Auxbeam Lighting is shipping worldwide covering North and South America, Europe, Asia, Africa, Oceania and more.
We employ the services of major, trusted international carriers to ensure your package arrives at your destination safely.
U.S. domestic orders are shipped from our USA warehouse for the fastest delivery times but exceptions may occur based on stock shortage - because of which we may have to ship from China.
International orders are shipped from our China warehouse.

Shipping Time

U.S. domestic shipping: about 3-5 Working Days
International shipping: about 8-15 working days
A standard processing time of up to 48 hours is required before the order is shipped out.
Due to challenges posed by the pandemic, our carrier is temporarily experiencing shipping delays, which may delay your delivery. We are always work to get your package to you as quickly and safely as possible.

Shipping Cost

We offer free shipping on all of our products to customers in the Continental U.S. when orders over $19.99. Customers in other regions need to pay additional shipping costs(Specific amount please kindly refer to your checkout page).

Tracking

Your tracking number will be sent in email immediately after we ship the order out. You may follow the link in the email to check the estimated arrival time of your order.
(Please note that tracking information will only be updated online in 1 working day after your order has been shipped.)

Additional Notes

If the wrong information is provided (address, phone, email) and results in your shipment being undeliverable, the customer is responsible for the shipping cost for the 2nd shipment.
We do not offer overnight shipping.
If you have any questions, please feel free to contact us via email: Customer@auxbeam.com

H4/9003 LED headlight bulbs

Happy with product purchase 🤙🏽

Didn’t use

Headlight housings i got didn’t fit in my truck (cheap amazon junk) so i never used the bulbs. But because i had already installed them in the housing and pulled the backing off the tape, i couldn’t send them back either. So i wasted $100 on bulbs i can’t use. Bought alpharex instead.

I can see again

Love the new headlight bulbs , the brightness cuts through my faded head light lenses and night time vision has been restored

I put them in a 1998 Toyota 4runner

They are absolutely amazing best purchase they are at least 5 times brighter than my old lights

Súper Bright

The headlights are incredible. They are super bright and the project a perfect beam pattern. I really like them.

Frequently asked questions

Is H4 the same bulb as 9003?

Yes — H4, 9003, and HB2 are different names for the same dual beam headlight socket. One bulb carries both the high beam and the low beam, switching instantly between the two. That is why you will see this bulb listed under any of these names across brands; the fitment is identical, and the Auxbeam GX pair on this page replaces the stock H4/9003 halogen bulbs one-for-one.
How do I confirm my vehicle uses an H4/9003 bulb?

Two quick ways: use Select Your Vehicle and filter by year, make, and model — the tool shows exactly which sockets your vehicle uses; or email customer@auxbeam.com with your vehicle’s year, make, and model, and we will confirm the fitment before you order. The H4/9003 socket is one of the most widely used dual beam sockets worldwide, common on cars, motorcycles, and many trucks and SUVs.
What is the difference between an H4 dual beam bulb and separate high/low beam bulbs?

An H4/9003 socket is a dual beam design: one bulb produces both the high and low beam in the same housing, so replacing it upgrades both beams at once. Vehicles with separate sockets (for example, 9005 high beam + H11 low beam) use two independent bulbs per side — if that is your setup, our 9005+H11 LED combo kit covers both sockets in one order instead. Checking your current bulb’s markings or using Select Your Vehicle tells you which design your vehicle has.
Will these H4 LED bulbs cause error codes or flickering?

The built-in upgraded driver is CAN-Bus ready and compatible with 99% of vehicle computer systems with no error codes. A few sensitive models — such as Mercedes-Benz, BMW, Volvo, Dodge, Ford Fusion, Ford Focus, and Ford Escape — may flicker after installation; this is not a quality issue, and adding a decoder resistor resolves it. Based on our customer order records: the C10 decoder solves most decoder cases, including Ford, Jeep, and GMC; RAM, Mercedes-Benz, and BMW should choose C20 directly; for Dodge, start with C10 and switch to C20 if flicker persists. Both C10 and C20 decoder options can be added on this page when ordering, or bought separately from the Canbus decoder collection.
What if the cooling fan does not fit under my original dust cover?

The bulbs are mini sized at nearly 1:1 halogen dimensions, but the built-in cooling fan adds extra length, so on some vehicles the original dust cover cannot close fully after installation. The fix is simple: replace the stock cover with a silicone seal cap. For convenience, this listing offers two optional dust covers you can add to your order — a universal seal cap for 55mm–95mm housings and an H4/9003-specific seal cap — or browse our full dust cover collection for more options.
How bright are the GX H4 LED bulbs compared to halogen?

Each pair outputs 120W and 25,000LM — about 650% brighter than halogen bulbs — using upgraded 75 mil 7035CSP LED chips. In real driving terms, the beam reaches visibly farther and lights up road signs, lane lines, and roadside hazards much earlier than dim yellow halogen light, while the super-focused beam design keeps the light on the road instead of in oncoming drivers’ eyes.
How long do the H4 GX LED bulbs last, and are they waterproof?

The GX series bulbs are rated for 50,000 hours, supported by a 2-in-1 cooling system: a hollow-carved aviation 6063 aluminum heat sink and a 12,000RPM turbofan that exhausts heat quickly at 120W output. The bulbs also carry an IP68 waterproof rating and a wide operating temperature range, standing up to rain, dust, frost, snow, and car washes for years of nightly driving.
What warranty and shipping terms apply to this H4 LED bulb pair?

This pair is covered by a 2-year warranty (clearance items excluded) and a 30-day hassle-free return policy. Orders ship from our US warehouses, with free shipping on US orders over $19.90. If you have any questions about fitment or installation, email customer@auxbeam.com with your vehicle’s year, make, and model, or find more answers in our LED bulbs FAQ hub.