H4 Halogen Headlight Bulbs | H4 Headlight Bulb | H4 Halogen Bulb Pair

You get two H4 halogen headlight bulbs and nothing else. There are no adapters, ballasts or wiring pieces, because none are needed for a standard halogen bulb swap. The two bulbs are there so both headlights can be done at the same time.

H4 is the name of the bulb base and the way the filaments are arranged. It is a three contact fitting that carries both high and low beam in one bulb. The shape of the base and the position of the tabs are what decide whether a bulb fits a housing.

Those three names describe the same physical fitting, and manufacturers print whichever marking suits the market the bulb was packaged for. If the old bulb is marked H4, 9003 or HB2, the fitting matches this pack. The marking is usually on the metal base or the plastic collar.

The owner manual usually lists bulb types in the maintenance or specifications section. If you do not have the manual, pull the old bulb and read the marking on its base. Checking before ordering is the quickest way to avoid a return.

We list fitment by bulb type only, not by vehicle make or model. If the housing takes an H4 bulb, this pack suits it. Confirm the fitting in the owner manual or on the old bulb before ordering.

The stated colour temperature is 3800 Kelvin. That reads as a clear halogen white with a slightly warm edge rather than a blue tone. It looks close to the light most drivers are used to from a standard halogen bulb.

No. Blue tinted bulbs usually sit much higher on the Kelvin scale, often above 6000K. At 3800K the light stays in halogen white territory, which many drivers prefer on wet nights because very cool light can reflect back off moisture in the air.

The details we can confirm are the H4 fitting, halogen light source, pack of two and 3800 Kelvin colour. If wattage matters for your application, ask us before ordering.

We do not publish a lifespan figure for this bulb, so we would rather not guess at one. Halogen bulb life in general depends on how much night driving you do, road vibration and how often the lights are switched on and off. Keeping a spare pair on hand is sensible either way.

We do not make comparison claims about brightness, because that depends entirely on the age and condition of the bulbs already in the vehicle. What we can say is that an old halogen bulb usually dims gradually, so a fresh pair often looks noticeably cleaner. The specification we publish is the 3800K colour.

We do not claim an approval mark for this bulb, because we hold no approval document for it. If you need a bulb with a specific approval marking, check what is printed on the base of your old bulb and send us a message before you order.

Headlight bulbs age at a similar rate, so when one goes the other is usually not far behind. Changing both keeps the beams matched in colour and output, which looks better and reads better on the road. That is the main reason this is sold as an h4 halogen bulb pair.

Yes, plenty of people do exactly that and keep the second bulb in the glovebox. It makes a decent spare headlight bulb kit for a trip. Just leave it in its packaging so the glass stays clean and the bulb does not get knocked about.

If the motorcycle headlight takes an H4 bulb, the fitting matches. Many single headlight bikes use this base, which is why people search for a motorcycle h4 bulb. Check the marking on the old bulb or the owner manual to be sure.

The same rule applies. Any 12 volt housing designed around the H4 base will accept an H4 bulb, which is why these come up when people look for h4 bulbs for trucks. The deciding factor is the fitting, not the vehicle class.

Yes. An H4 bulb carries both filaments in a single glass envelope, so one bulb handles dipped beam and main beam. That is what makes it an h4 high low beam bulb rather than a single function bulb.

Often no tools are needed at all, just the ability to reach the back of the headlight. Some vehicles have a dust cover, a retaining clip or an air intake pipe in the way, and those may need a screwdriver or a gentle hand. Work with the engine off and the lights switched off.

Hold the bulb by the metal base or keep the protective sleeve on while you line it up. Seat it so the locating tabs sit in their slots, then clip or twist it home depending on the housing. Reconnect the plug and test both beams before closing everything up.

Oil from your fingers leaves a residue on the quartz glass. When the bulb heats up, that spot gets hotter than the surrounding area and can shorten the life of the bulb. If you do touch the glass, wipe it with rubbing alcohol on a lint free cloth before fitting.

Yes, halogen bulbs run very hot in normal use, and so does the housing around them. Always let the headlight cool before you open it up or handle a bulb that has just been running. This is the single most common cause of a burnt finger during a bulb change.

Changing a bulb for the same fitting type does not normally change the aim, because the bulb seats in the same position. If the beam looks off afterwards, check the bulb is fully seated and the retaining clip is closed. Aim adjustment itself is a separate job done at the housing.

You can, but it is worth avoiding. Different bulbs can give different colour and spread, which looks uneven from outside and reads oddly on the road. Fitting a matched pair is the simpler answer.

No. Halogen bulbs run directly from the existing headlight wiring, which is one reason a swap is quick. Ballasts and driver boxes belong to other lighting technologies, not to a standard halogen headlight bulb.

Leave it in its box, keep it dry and store it somewhere it will not be crushed or rattled against hard objects. A glovebox or a padded corner of a boot organiser works well. Storing it in the original packaging also keeps the glass clean.

Common signs are a dimmer beam than the other side, a slight colour shift, or flickering when you switch beams. Sometimes a bulb simply stops with no warning. If one side has already gone, treat the other as due.

It is a good moment to wipe the inside of the dust cover and the outside of the headlight lens with a soft damp cloth. Make sure everything is dry before you seal the housing again.

Yes, the condition listed is new and the bulbs ship in their retail packaging. We do not sell used or reconditioned bulbs. If a pack ever arrives looking opened or damaged, contact us before fitting it.

We dispatch within 2 working days. Delivery then takes up to 7 working days by tracked courier, anywhere in Canada. It is free on orders of $100 or more and a flat $25 below that, shown in your cart before you pay. You get a tracking number by email once the parcel is dispatched.

If the bulbs turn out to be the wrong fitting, get in touch and we will sort out a return or exchange. Please keep the bulbs unfitted and in their packaging if you think there is a chance they are wrong, since an installed bulb cannot be resold. Message us with the marking from your old bulb and we can tell you quickly whether H4 is the right call.

No separate warranty is sold. Your provincial consumer protection law applies in full, and faulty items are put right. Contact us with your order number and a photo and we will sort it out.