Dishwashers · parts
Dishwasher drain pump compatibility: match by model, not appearance
Two dishwasher pumps can look alike while differing in voltage, connector keying, housing lock, outlet geometry, control behavior, or model revision. Compatibility starts with the complete appliance model and an official parts listing, then uses the old part label and physical details as confirmation—not as the primary lookup.
Safety boundary
- Disconnect electrical power and shut off water before accessing an installed pump.
- Drain residual water before opening hoses or the sump.
- Use service documentation or a qualified technician for electrical tests and sealed-base access.
Compatibility requires a direct model listing, explicit supersession, or equivalent manufacturer evidence.
Required identifiers
- Complete dishwasher model number including suffix
- Serial number or production range when the catalog splits revisions
- Manufacturer-listed service part number and supersession
- Voltage and frequency
- Connector shape and keying
- Mounting or twist-lock interface
- Outlet orientation and hose connection
Compatibility rules
- Start from the official parts diagram or manufacturer-authorized lookup for the exact appliance model.
- Treat a superseding part as compatible only when the source explicitly maps the old number to the new number.
- Confirm production or serial breaks before ordering.
- Use dimensions, connector, and label details to verify the sourced part, not to invent cross-model compatibility.
- Recheck the original diagnosis; a blocked path or missing pump command can imitate pump failure.
Never assume
- A visual match proves compatibility
- The same brand uses one pump across a product line
- A marketplace fitment list overrides the manufacturer model breakdown
- An E24 or other drain code proves the pump failed
- A similar service number is an approved supersession
Minimum evidence for a compatibility claim
Publish a direct model-to-part listing, an explicit manufacturer supersession, or a service bulletin that names both identifiers. If that evidence is unavailable, label the part as a candidate for verification rather than compatible.
What to record from the old pump
- Every label character
- Electrical rating
- Connector photos
- Housing and outlet orientation
- Mounting tabs or lock position
- Any harness or gasket included with the service kit
Sources and claim boundariesReviewed 2026-09-28
Whirlpool Product Help: Dishwasher Not DrainingCommon drain restrictions include the filter, sump, drain hose, disposal or sink connection, and drain pump.Open official source →Bosch Home Appliances: Dishwasher Error Code E24Bosch identifies E24 as a dishwasher drainage fault and directs owners to inspect the drain path and pump cover using model instructions.Open official source →