Appliance Spares
Quick answer: Most Bosch front loaders sold in Australia take one of a small number of drain pumps, and the pump comes as a single unit with the fluff filter housing you unscrew at the bottom front. One part, 00145093, covers a large slice of the WAW, WAP and WGA ranges. What decides it is not the series name but the full E-Nr on your model sticker — including the digits after the slash. If your machine shows E18 or F18, the pump is the first place to look, but check the filter and hose first because they’re free.
Last updated August 2026
Match your model to the pump
Find your model code on the sticker — inside the door rim, or on the rear panel — and read across. Bosch model codes are long, so match as much of the code as you can, not just the first few characters.
| Your model code starts with | Examples on the sticker | The pump that fits |
|---|---|---|
 WAW28 (Serie 8) | WAW28420AU · WAW28441AU · WAW28460AU · WAW28620AU · WAW28790AU | Bosch 00145093 pump with filter (WAW28420AU, WAW28441AU) or the WAW28620AU and WAW28790AU version |
 WAW32 / WAY32 | WAW32640AU · WAY32891AU | Bosch 00145093 pump with filter (WAW32640AU, WAY32891AU) |
 WAP28 | WAP28380AU · WAP28482AU | Bosch 00145093 pump with filter (WAP28380AU, WAP28482AU) |
 WAS28 / WAS32 (Logixx) | WAS28440AU · WAS32440AU | Bosch 00145777 drain pump (WAS28440AU, WAS32440AU) |
 WGA / WTG / WVH | WGA244U0AU · WTG86400AU · WVH28490AU | Bosch pump with filter (WGA244U0AU, WTG86400AU, WVH28490AU) |
 WAU28 / WAP2826 | WAU28490AU · WAP282602W | Bosch 00145894 drain pump (WAU28490AU, WAP282602W) |
 Older platforms | Machines using pump codes 144978, 141896 or 142040 | Bosch drain pump 144978 / 141896 / 142040 |
Why the digits after the slash matter
Bosch identifies machines by an E-Nr — a code like WAW28460AU, usually followed by a slash and two more digits, as in WAW28460AU/07. Those trailing digits are the production variant, and Bosch does change components between them. It is why you will see the same model listed twice against different parts.
When you photograph your model sticker, get the whole thing including the FD number. If a listing shows your E-Nr but a different variant, the safest move is to send us the full code and we’ll check it against the pump before you order. Our guide to finding the Bosch E-Nr and why the /07 matters shows exactly where to look.
The Bosch pump is a pump-and-filter unit
This catches people who have worked on other brands. On most Bosch front loaders the fluff filter you unscrew behind the little flap at the bottom front is not a separate trap — it screws into the pump housing itself. So the replacement part is the complete pump-and-filter assembly, not a bare motor.
Practically that means two things. The job is simpler than on machines where the pump hides behind a separate volute, because you are removing one moulded unit. And you should not go looking for a cheaper “just the motor” version, because on these machines there isn’t one.
If the pump itself is fine and only the filter cap is damaged — a stripped thread or a cracked cap, which does cause a slow weep at the bottom front — that is available separately as a filter plug cap 00601996, at a fraction of the pump.
E18, F18 and E23 — what they’re actually telling you
Bosch machines report drainage faults with a small family of codes, and they mean roughly the same thing from your side of the door: the machine tried to pump out and the water didn’t go.
- E18 or F18 — drain fault. Full detail in our E18 guide and the F18 guide.
- E23 — usually water in the base tray, which points at a leak as well as a pump problem. See the E23 guide.
- The full Bosch error code list covers the rest.
An error code is a symptom, not a diagnosis. It tells you the machine noticed a problem; it does not tell you which part caused it.
Do these three checks before ordering anything
They cost nothing and they resolve a large share of E18s outright.
- Empty and clean the filter. Open the flap at the bottom front, have a shallow tray and towel ready — there is more water in there than you expect — and unscrew the cap. Clear the lint, coins and hair. Check the impeller behind it turns freely when you reach in with the machine unplugged.
- Check the drain hose. Pull it from the standpipe. Look for a kink where it passes behind the machine, and for a blockage at the outlet end. A hose pushed too far down the standpipe siphons; too high and the pump can’t lift the water.
- Listen during the drain step. A hum with no water movement means a jammed or failed pump. Silence means the pump isn’t being asked to run — wiring, or the board.
Our Bosch not-draining walkthrough takes these in order with photos.
Fitting the new pump
Turn the taps off and unplug the machine at the wall — not just switched off at the appliance. Drain what you can through the filter first. Most Bosch front loaders give access through the front kick panel; a few need the machine tipped gently back.
The pump unit is held by two or three screws, with a hose clamp on the tub hose, the outlet hose, and a plug or two on the motor. Photograph the wiring before you disconnect it. Fit the new unit, refit the clamps properly rather than by feel, and run a rinse-and-spin with the kick panel still off so you can watch for weeping.
The honest caution: the pump terminals sit on 240V. Unplug it, and if your machine is hard-wired, or you are not confident around mains connections, get a licensed person to do that part. The plumbing side is genuinely low risk.
While you’re in there
If the machine has also been noisy on spin, the drum bearings are the usual reason, and it is worth knowing before you close everything up — the two jobs share a good deal of dismantling. We stock the tub lip seal and bearings kit for the WAS28440AU and the Logixx 8 kit for WAS32440AU and WAY32840A. A leak at the door rather than underneath is a different part again — see the Bosch door seal guide.
The rest of the Bosch range is on the Bosch parts page.
What the two paths cost
A washing machine drain pump is commonly a $30 to $70 part, and on a Bosch the pump-and-filter assembly sits toward the upper part of that band because you get the housing with it. Against that, a repairer typically charges $100 to $165 just to attend and diagnose before parts or labour, with most full washing machine repairs landing between $200 and $450 — and many charge a one-hour minimum regardless of how quick the job is. Clearing the filter, of course, costs nothing.
Frequently asked questions
Q: What does E18 mean on a Bosch washing machine?
A: It’s a drainage fault — the machine tried to pump out and the water level didn’t drop. It doesn’t identify the cause. Clean the fluff filter and check the drain hose first, because those two account for a large share of E18s and cost nothing to rule out.
Q: Can I buy just the pump motor for a Bosch, without the filter housing?
A: On most Bosch front loaders, no — the filter screws into the pump housing, so the part is supplied as one pump-and-filter assembly. If only the filter cap is damaged, that is available separately.
Q: Does one Bosch pump fit several models?
A: Yes. Part 00145093 covers a broad slice of the WAW, WAP and WGA ranges. That’s why matching the full E-Nr from your model sticker matters more than knowing which series you own.
Q: Why do the digits after the slash in my model number matter?
A: They identify the production variant, and Bosch does change components between variants. If a listing shows your E-Nr with different trailing digits, send us the complete code including the FD number and we’ll check it against the pump.
Q: My Bosch drains but very slowly. Is that still the pump?
A: Sometimes, but check the filter and hose first — a partly blocked filter or a kinked hose produces exactly that symptom. If both are clear and the impeller spins freely, a tired pump is the likely answer.
Bottom line: filter, then hose, then pump — and when it is the pump, match the full E-Nr rather than the series. Send your model number through the part finder and we’ll confirm which one your machine takes.
Disclaimer: this article is general information only and is provided without warranty of any kind. Appliance designs vary between models and production runs — always follow the manufacturer’s instructions, switch off and unplug the appliance before starting any work, and confirm parts against the model number on your appliance’s model sticker. Any repair is undertaken at your own risk and Oz Appliance Spares accepts no liability for injury, loss or damage arising from work performed after reading this guide, to the maximum extent permitted by law. If in doubt, use a qualified technician.
