3M AP2-C405-G 0.5 micron replacement filter cartridge — original label on white background

3M AP2-C405-G Water Filter

0.5 micron carbon block for mains-fed water coolers and drinking water systems.

MPN

Ā£26.99 inc. VAT

In stock Ready to dispatch
  • For Drinking Water+1Suitable for Drinking Water, Water Cooler
  • 6-month / 4,000 L life
  • Reduces chlorine taste & odour, sediment, cysts, lead, benzene, toxaphene, p-dichlorobenzene
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Free UK delivery Orders over £60
Standard delivery Ā£3.99 Ā· 2–3 working days
Next-day delivery £6.99 at checkout

*ETA shown applies when next-day delivery is selected at checkout.

Delivery information

Order before the delivery cut-off for the fastest available dispatch. Delivery options and final prices are confirmed at checkout.

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What our customers say

4.9 out of 5 (500+ store reviews)

Perfect fit for my RO system. The size was exactly what I needed, delivery was fast and installation was as easy as push and go.
— Mark T., verified buyer store review

Why you’ll love it

  • 0.5 micron filtration for finer sediment reduction than the 1 micron C401 range.
  • Reduces chlorine taste and odour, lead, cysts and selected VOCs.
  • Up to 4,000 litres or 6 months of use, whichever comes first.
  • Sanitary Quick Change fitting for a straightforward cartridge change.

The 3M AP2-C405-G is a replacement water filter cartridge with a 0.5 micron carbon block. It is designed for compatible mains-fed water coolers and drinking water systems.

It reduces chlorine taste and odour, sediment, cysts, lead and selected VOCs, including benzene, toxaphene and p-dichlorobenzene.

This G model does not include a scale inhibitor. Choose the AP2-C405-SG when scale inhibition is required.

Filter life and replacement

Rated for up to 4,000 litres at approximately 1.9 litres per minute. Replace every 6 months or at rated capacity, whichever comes first. Water quality and usage affect service life.

Compatibility

The Sanitary Quick Change cartridge fits compatible 3M AP2 filter heads. Check your system model before ordering. The cartridge has a finer rating than the 1 micron C401 range; this alone does not confirm appliance compatibility.

What is included?

One 3M AP2-C405-G replacement cartridge. Filter head, tubing and fittings are sold separately.

Product Details

The 3M AP2-C405-G is a replacement water filter cartridge with a 0.5 micron carbon block. It is designed for compatible mains-fed water coolers and drinking water systems.

It reduces chlorine taste and odour, sediment, cysts, lead and selected VOCs, including benzene, toxaphene and p-dichlorobenzene.

This G model does not include a scale inhibitor. Choose the AP2-C405-SG when scale inhibition is required.

Filter life and replacement

Rated for up to 4,000 litres at approximately 1.9 litres per minute. Replace every 6 months or at rated capacity, whichever comes first. Water quality and usage affect service life.

Compatibility

The Sanitary Quick Change cartridge fits compatible 3M AP2 filter heads. Check your system model before ordering. The cartridge has a finer rating than the 1 micron C401 range; this alone does not confirm appliance compatibility.

What is included?

One 3M AP2-C405-G replacement cartridge. Filter head, tubing and fittings are sold separately.

Specifications
MPN
7000051325
SKU
3MAP2-C405-G
Model code
AP2-C405-G
Brand
3M
Product range
AP2
Application
Drinking Water System, Water Cooler
Material
Plastic housing with activated carbon filter media
Operating temperature
4.4–37.8°C
Operating pressure
1.7–8.3 bar (25–120 psi)
Flow rate
1.9 lpm
Installation position
Quarter-turn cartridge in a compatible 3M AP2 head
Country of origin
Mexico
Filter life
6 months or 4,000 litres*, whichever comes first
Micron rating
0.5 micron

* Up to 4,000 litres or 6 months, whichever comes first; service life depends on water quality and usage.

Downloads

Product data sheetView PDF
Installation

Follow the instructions supplied with your water system. Isolate and depressurise the water supply unless the system instructions explicitly permit a cartridge change with the supply on.

Turn the existing cartridge a quarter turn to release it. Fit the new cartridge into the compatible AP2 head and turn to lock it securely.

Restore the supply, flush according to the system instructions and check for leaks. Record the installation date and replace after 6 months, at rated capacity, or earlier if flow falls noticeably.

Use on a cold, potable water supply. Do not use on microbiologically unsafe water without adequate disinfection.

Delivery & Returns

Order before our dispatch cut-off — 3pm Monday to Friday, or 12pm on Saturday — and your order is sent the same day; anything after that follows the next working day. We don’t dispatch on Sundays, and you’ll get a tracking link by email as soon as your order is on its way.

Choose your UK delivery option at checkout:

  • Free Express Delivery — free on orders over £60 (2–3 working days).
  • Standard Delivery — £3.99 (2–3 working days).
  • Next Day Delivery — £6.99, arriving the next working day when you order before the cut-off.

We also ship internationally, with rates calculated at checkout.

Returns & refunds

Changed your mind? You have 30 days to return any unused filter in its original sealed packaging for a refund, or 90 days for exchanges. Start at our returns portal and either generate a prepaid Royal Mail label (£3.49, deducted from your refund) or use your own courier — exchanges are always free to return. We approve refunds within 24 hours of your return reaching us; your bank may then take 3–5 working days to show the funds.