Washing Machine Drain & Circulation Pump
Replacement washing machine drain and circulation pump – compatible with Bosch and Siemens as shown unless advised otherwise
Description
A genuine dual-purpose pump that serves both the drain and circulation functions on compatible Bosch and Siemens washing machines.
As an original component, it is identical to the pump fitted at the factory, matching the original in flow rate, impeller geometry and electrical characteristics. During the wash cycle, it recirculates water through the drum to improve detergent distribution and cleaning performance, while during the drain stage it removes the used water from the sump. Fitting a genuine pump preserves the timing and behaviour that the control module expects at every stage of the programme.
This pump may fit more models than shown, so if your appliance isn't listed but uses the same pump assembly, contact our parts advisors with your full model number before ordering. Where the model number is not listed, it is still worth checking, as Bosch and Siemens share many common pump assemblies across their ranges.
Drain and circulation pumps commonly fail due to a build-up of lint, hair, and foreign objects reaching the impeller; bearing wear after years of service; or the motor winding failing open-circuit. Typical symptoms include water standing in the drum at the end of a programme, a humming noise with no drainage, repeated drain error codes, poor rinsing performance, and the machine stopping before the final spin. Because a blocked filter or kinked hose can produce identical symptoms, rule out these possibilities before replacing the pump.
Technical Notes
Specifications: Genuine Bosch and Siemens washing machine drain and circulation pump. Motor type: shaded pole induction motor. Voltage: 230V ~ 50Hz. Power consumption: approximately 30W. Outlet connections: push-fit hose spigots for drain and circulation circuits. Mounting: bayonet or screw-fixed housing with gasket. Product code: 00146222.
Safety note: This component operates on mains voltage and is in contact with water. Always isolate the appliance from the electrical supply and turn off the water inlet before beginning any work. Drain any residual water from the filter housing and sump hose before removing the pump, as this water may be hot and may contain detergent residue. Wear gloves and place a shallow tray and towels beneath the appliance to catch spillage.
Fitment guidance: This pump fits only the Bosch and Siemens washing machine models listed in the compatibility matrix below. It may be used in more models than shown — if your model is not listed, contact our parts advisors with your full model number to confirm fitment before ordering.
BOSCH WASHING MACHINE
3TW9105BD, 3TW9105BD/01, WAE24167ES, WAE24460ES, WAE28460ES, WAE28480ES, WAV08E90PL/07, WAV08E90PL/09, WAV08G90PL/07, WAV08M92PL/07, WAV28E43, WAV28G43, WAV28M43/01, WAV28M73EX, WAV28M93, WAV28M93/01, WAV28MV3, WAVH8G90PL/06, WFL2060ES, WFL2450ES, WOT24457ES, WOT24460ES, WPBM17
SIEMENS WASHING MACHINE
WG44H2A6FG/01, WG440209IL/22, WG56G2MEFG, WM14E240ES, WM14E260ES, WM14E260ES/01, WM14E264ES, WM14E264ES/01, WM14VM43
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| Further Description |
Common Faults & SymptomsThe following fault codes and symptoms are commonly reported when this part begins to fail. Use this as a diagnostic guide before ordering a replacement — if more than one of these is present, the part is the likely culprit. 1
Error Code E18 / F18 — Drain Fault
Displayed by Bosch and Siemens washing machines when the appliance fails to drain within the expected time. Water may remain standing in the drum at the end of the cycle. This code is one of the most common indicators of a failing drain pump, but a blocked filter or kinked hose can trigger the same code, so these should always be checked first.
2
Error Code E02 — Drain Time Exceeded
On some Bosch and Siemens models, E02 indicates that the drain stage took longer than the control module allows. The machine may attempt to drain several times before shutting down. A pump that is worn but not yet seized often triggers this code intermittently before failing completely, so the fault should not be ignored.
3
Water Standing in the Drum After the Cycle
The most visible symptom of a failing drain pump. Water remains in the drum at the end of a programme, or drains only partially. In some cases the water drains slowly over several minutes rather than in the usual short burst. This can also indicate a partially blocked filter, so check that first before ordering a replacement.
4
Humming Noise With No Drainage
The pump motor can be heard running, but no water leaves the drum. This usually indicates that the impeller has broken free from the motor shaft, or that debris is jamming the impeller. Isolate the appliance and check the filter housing for foreign objects before ordering a replacement.
5
Poor Rinsing or Detergent Residue Left on Laundry
Because this pump also handles the circulation function, a failing unit can reduce the flow of water through the drum during the wash and rinse stages. The result is detergent that is not fully flushed from the clothes, soapy residues, and a wash performance that is noticeably poorer than usual even though the drum fills and drains as normal.
6
Grinding or Rattling Noise During Drain
A grinding or rattling sound from the pump area indicates that debris has entered the impeller housing or that the bearings are worn. If the noise is intermittent and accompanied by reduced drainage, a foreign object such as a hair grip, coin or bra wire is the likely cause. The filter housing should be opened and inspected first.
7
Cycle Stopping Before the Final Spin
The machine may complete the wash and rinse stages but stop before the final spin, leaving clothes saturated. This is a safety behaviour triggered when the module detects that the drum has not drained. The pump is one of the first components to check when the machine refuses to spin, along with the pressure switch and the sump hose.
8
Water Leaking From the Pump Housing
A worn pump seal or a distorted housing gasket can allow water to seep from the pump area during operation. This is often visible as a small puddle beneath the machine. If the pump itself is sound, a replacement gasket or seal may be sufficient, but a pump that has been running with a damaged seal is usually close to failure and is best replaced.
Fitment GuidanceThis drain and circulation pump is compatible with the Bosch and Siemens washing machine models listed in the compatibility matrix above. It may also be used in more models than shown, so if your appliance is not listed but uses the same pump assembly, contact our parts advisors with your full model number before ordering.
Diagnostic TipsBefore concluding that the pump has failed, carry out these checks to rule out other causes. A multimeter is required for the electrical tests.
Installation GuideThese steps describe the general procedure for replacing a washing machine drain and circulation pump. The exact sequence varies between models, so always consult the appliance service manual where available.
Before Ordering, Check These First
Disclaimer: The fault codes and symptoms listed above are intended as a general guide to assist with diagnosis. They cannot be taken as a definitive diagnosis of any particular problem, and other components may produce similar symptoms. Always confirm the fault with proper testing before ordering parts. |
|---|---|
| Alternate Part Number | BSH00146222, 5055006448535, 00425075, 146222 |
| EAN Number | 00146222 |
| Manufacturer | BSH |
| Genuine Part | Yes |
Washing Machine
Drain Pumps
Drain pumps remove water from your washing machine or washer dryer. Faulty pumps can cause leaks, noises, or prevent the machine from draining properly.
About Washing Machine Drain Pumps
The drain pump runs every time your washer drains, meaning it’s in constant use. Cheap pumps without thermal cutouts can be a fire risk, so quality matters. Sludge and detergent residues can block the pump, causing odors or failure.
Common issues include noisy operation, screeching sounds, or complete failure to drain. Regular maintenance, such as cleaning the filter monthly, helps prevent these problems and extends pump life.
Need Help Finding a Drain Pump?
Contact us with your washing machine make, model, and serial number. We’ll identify the correct replacement pump and suggest compatible, affordable options to save time and money.
Contact Support Team
BSH Group Platform Specialist
Bosch / Neff / Siemens
Spare Parts.
Bosch appliances are produced by the BSH Group, which also owns Neff and Siemens. Many components are shared across these brands and their regional variants, making accurate model identification essential for correct part selection.
ENR-Based Identification Is Mandatory
Almost all Bosch, Neff, and Siemens appliances are produced in multiple variants. To ensure correct fitment, the full model number or ENR number from the rating plate is required. Visual comparison alone is unreliable.
Cross-Brand Compatibility
Many functional components, such as heating elements, motors, switches, and pumps, are shared across Bosch, Neff, Siemens, and other BSH-owned brands. Correct cross-referencing can significantly reduce repair costs without compromising quality.
Variant Sensitivity
Bosch parts can vary significantly by revision, and some genuine components are expensive. Ordering without confirming the ENR can result in incorrect or incompatible parts. When in doubt, verification is strongly advised.
Confirm Your Bosch, Neff or Siemens Spares
Provide the full model or ENR number, and our technical team will check your appliance against the correct BSH platform to ensure exact fitment.
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Delivery & Returns Information.
We aim to get your parts to you as fast as possible. We are transparent about lead times, stock availability, and our returns process to ensure a smooth repair.
Stock Availability
Please be aware that we show availability but do not display live stock levels online. Estimates are based on average manufacturer lead times.
Tradesman Warning
Do not arrange a tradesman until your goods have arrived and been checked. We do not cover tradesman costs due to transit delays or suitability issues.
Understanding Lead Times
Normally a UK stock item. Dispatched same or next working day. Some items may take longer depending on specific warehouse location.
Usually a UK/EU stocked item but with a longer lead time. Contact us before ordering for specific clarification if the repair is urgent.
Factory or Custom order items. These are ordered specifically for you and cannot ordinarily be returned. Please allow the full time indicated.
Order Transit
Orders placed before 3:00 PM (Mon-Fri) for in-stock items are typically dispatched same-day.
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Returns Policy
Damages
Report transit damage within 24 hours. Include a photo of the damage and the packaging to speed up the claim process.
Cancellations
You have 14 days after delivery to cancel. This must be done via email or support ticket (not phone/chat).
Exclusions
We cannot accept returns for items that have been fitted for fault-finding, used, or custom-ordered.
How to Return an Item
Contact us with your order number and reason for return.
Wait for instructions and the correct returns address (this varies by item).
Package carefully. Do not deface original packaging. Use tracked post.
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