Oral-B iO5 Replacement Heads UK: Compatible Refills & Options
Which replacement brush heads fit the Oral-B iO5, and what they cost. The handle is model iO5, and that reference is what you match against the head packaging.
Which brush heads fit the Oral-B iO5?
We have verified 2 head packs for the Oral-B iO5. Every one below seats on the handle and is driven correctly; nothing is listed that we have not checked against this model.
| Head | Pack | Price | Per head | Buy |
|---|---|---|---|---|
|
Oral-B iO Series Ultimate Clean Electric Toothbrush Heads, 8 Count, Black Oral-B · Official fit |
8 heads | £33.99 | £4.25 | Check price |
|
Oral-B iO Series Ultimate Clean Electric Toothbrush Heads, 4 Count, Black Oral-B · Official fit |
4 heads | £23.27 | £5.82 | Check price |
Prices are the lowest we have recorded at a UK retailer and change with stock and promotions, so treat them as a guide rather than a fixed price. Multi-packs usually work out cheaper per head.
How the Oral-B iO5 takes a replacement head
Oral-B iO Magnetic Drive Fitting — Proprietary magnetic connection specifically for Oral-B iO Series 3, 4, 5, 6, 7, 8, 9 and 10 handles. Not backwards compatible with standard Pro/Genius pins.
That single detail decides which packs you can buy. A head built for the other fitting will not seat on the Oral-B iO5, and forcing it can damage the drive. When you shop, check that the pack names the system or the handle model, not just the brand.
Genuine heads vs third-party compatible heads
Both categories can work on the Oral-B iO5, and the difference is mostly price, warranty and how confident you can be about the fit. Here is the trade-off in plain terms.
Sold by Oral-B for this exact model. You get the fit the handle was designed around and a warranty on the part, and you can be certain it will seat. It usually costs more per head than a multi-pack from a third party.
Made by a different company, usually in a larger multi-pack, so the cost per head drops. It is worth buying when the seller names the handle model it fits. It is not worth buying from a listing that only says "fits most models".
Match the model reference on the handle against the model the pack lists. If the pack names a family rather than a model, look for a photo of the connection, or buy the manufacturer's head first and keep the packaging as a reference.
What replacement heads cost for the Oral-B iO5
Across the 2 head packs we track for the Oral-B iO5, the pack price runs from £23.27 to £33.99. Per head that is about £4.25 to £5.82, so the larger pack is usually the cheaper way to buy.
Work the per-head number out before you compare two packs. A 12-pack at a higher price is often cheaper per head than a 4-pack at a lower one, and if you buy two 4-packs you are spending the price of an 8-pack to get half the heads you need. The other half of the running cost is how long a head lasts: at roughly three months a head, a two-head household needs eight heads a year.
When to replace the head on the Oral-B iO5
Worn bristles clean less effectively and can irritate gums. A brush used twice a day wears faster than one used once a day.
Frayed or splayed bristles are the signal that a head has stopped working, whether or not three months have passed.
Heads differ by purpose, for example gentle, whitening or deep clean. Pick the one that suits your teeth and gums.
Multi-packs usually cost less per head. Check the price per head, not just the pack price.
Frequently asked questions about Oral-B iO5 replacement heads
We have verified 2 head options for the Oral-B iO5: Oral-B iO Series Ultimate Clean Electric Toothbrush Heads, 8 Count, Black; Oral-B iO Series Ultimate Clean Electric Toothbrush Heads, 4 Count, Black. Each one seats on the handle and is driven correctly, and we list them separately from genuine and verified alternatives so you can compare them directly.
The Oral-B iO5 is model iO5. That reference is printed on the handle or on the charging base, and on the box the brush arrived in. Matching it is the surest way to avoid a head that looks right but will not seat or turn properly on the drive.
The heads we track for the Oral-B iO5 run from £23.27 to £33.99. That works out at about £5.82 per head on the 4-pack and £4.25 per head on the 8-pack, which is why the larger pack usually works out cheaper per head.
Replace the head roughly every three months, or sooner if the bristles have frayed or started to splay outwards. A worn head removes less plaque, and the flattened bristles can irritate the gums. A brush used twice a day wears out faster than one used once a day, so the interval is a guide rather than a rule.
Proprietary magnetic connection specifically for Oral-B iO Series 3, 4, 5, 6, 7, 8, 9 and 10 handles. Not backwards compatible with standard Pro/Genius pins. A third-party head sold against that fitting will seat and drive correctly. A head built for a different fitting will not, which is why matching the system matters more than matching the brand name.
Use the DailyDental brush head finder to match a handle to the heads that fit it, then compare the prices and stock we track across UK retailers. The finder covers every Oral-B, Philips Sonicare and SURI handle we have published, including the Oral-B iO5.
Where to buy replacement heads for the Oral-B iO5
Use the DailyDental brush head finder to match any handle to the heads that fit it, then compare prices and stock across the UK retailers we track. It covers every Oral-B, Philips Sonicare and SURI handle we have published, including the Oral-B iO5, and it is the fastest route to a head you can be confident about.
Sources
The handle model, the fitting system and the head packs listed on this page come from the DailyDental product catalogue and the prices we record from UK retailers. Replacement intervals follow the guidance published by electric toothbrush manufacturers for their own brush heads.
This guide is general information about replacement brush heads. It is not a substitute for the instructions supplied with your toothbrush, or for advice from your dentist or hygienist if you have gum sensitivity, bleeding or pain when brushing.
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