How to Install Dishwasher Drain Pump 00642239 in a Bosch Dishwasher

Quick answer: Cut power, bail out the sump, remove the toe kick and base panel, unplug the two-pin connector, press the retaining tab and rotate the old pump out of the sump, check the sump for glass, seat the new pump 00642239 with its rubber seal, rotate it until it clicks, reconnect and run a drain cycle.

Drain pump 00642239 is the small motor and impeller assembly that empties the tub of a Bosch dishwasher during the drain phase of every cycle. It is an original equipment part with a nine-vane impeller and is listed for 649 models across the Bosch SHE, SHU, SHV, SHX, S35K and SGV series, the Thermador DWHD series and the Kenmore Elite 630 series, including SHX68P05UC53, SHE43P02UC64 and SHV68P03UC60. It also replaces the earlier part numbers 00494772 and 12054183.

A failed pump shows up as water left in the tub at the end of the cycle, a drain error on the display, a humming or rattling noise from the bottom of the machine, or a pump that runs but moves nothing because a shard of glass has locked the impeller. The pump sits in the sump on the underside of the tub and is reached from the front of the machine at floor level, so the job is awkward rather than difficult.

See part details and every compatible model: 00642239

⚠️ Safety First
  • Switch off the breaker or unplug the dishwasher, then confirm the display is dead before removing any panel.
  • The sump often holds broken glass and food debris; wear gloves whenever your hand goes near the impeller.
  • Water will spill from the sump when the pump comes out, so protect the floor and keep the pan close.
  • If you tip the machine on its back for access, have a helper and disconnect the supply and drain lines first.

Tools and Parts You Need

  • Torx screwdriver for the base panel and toe kick screws
  • Flat screwdriver for the retaining tab and connector
  • Small towel, sponge and a shallow pan
  • Flashlight or headlamp
  • Work gloves

Step-by-Step Installation

  1. Power down and empty the sump Turn off the breaker, remove the lower rack, twist out the cylinder filter and sponge or vacuum every drop of water from the sump. The less water left, the less pours out at floor level.
  2. Remove the toe kick and base panel Take out the screws holding the toe kick below the door, then the screws of the base panel behind it. Set the panels aside so you have a clear view under the tub.
  3. Locate the drain pump Shine the flashlight under the tub toward the front centre or side of the sump. The drain pump is the small round motor with a two-pin plug and a hose or spout leading to the drain line.
  4. Unplug the connector Press the latch on the two-pin connector and pull it straight off the pump terminals. Do not pull by the wires.
  5. Release and rotate the old pump Push the retaining tab on the pump body with a flat screwdriver, then rotate the pump a quarter turn to unlock it from the sump bayonet and pull it straight out. Expect a small gush of water.
  6. Inspect and clean the sump Reach into the sump opening and remove glass, seeds, labels or bone fragments. Wipe the sealing surface so the new rubber seal sits on clean plastic.
  7. Fit pump 00642239 Check that the rubber seal is seated in the groove of the new pump, push the pump into the sump opening in the unlocked position, then rotate it the opposite way until the tab clicks. Confirm it cannot be pulled back out.
  8. Reconnect and test Push the connector on until it latches, refit the filter, restore power and run a rinse or drain cycle with the panels still off. Watch the pump joint for drips and listen for a steady, even pump note.
  9. Close up When the sump stays dry through a full drain, refit the base panel and toe kick and check the door still closes cleanly against the panel.

Fit Checks Before You Call the Job Done

  • The pump turned fully to the locked position and the retaining tab is engaged; it should not wiggle in the sump.
  • The rubber seal is fully in its groove with no twist or pinch visible around the rim.
  • The connector is latched and the wires are routed away from the pump housing and any hot surface.
  • After a drain cycle, the tub is empty except for a thin film in the sump and the floor under the machine is dry.
  • The pump sounds smooth; grinding means debris or a misseated impeller.

Common Mistakes to Avoid

Skipping the sump inspection The glass that killed the old pump is usually still in the sump. If you do not clear it, the new impeller jams within a few cycles.

Rotating the pump the wrong way The bayonet only locks in one direction. Forcing it backwards damages the tab and the pump will pop loose under pressure. Note the direction when you remove the old one.

Pinching the seal A seal that rolls out of its groove during installation leaks under the machine. Wet the seal lightly with water so it slides into place.

Testing with the machine pushed in Always run the drain test before the panels go back on. A leak found afterwards means repeating the whole disassembly.

Confusing the drain pump with the circulation pump The circulation pump is the larger motor that feeds the spray arms. Part 00642239 is only the small drain pump; make sure the symptom is a drain fault before ordering.

Troubleshooting After Installation

New pump hums but does not drain Check the drain hose for a kink or a blocked air gap and confirm the disposal knockout is removed. Also clear any debris in the check valve at the pump outlet.

Water under the machine after the first cycle Remove the base panel and look for drips at the pump rim. Take the pump out, reseat the rubber seal in its groove and lock the bayonet again.

Drain error still shows on the display Cancel the cycle to reset the control, then run a fresh rinse. If the error returns with the tub empty, inspect the connector and the wiring to the pump.

Care Tips After the Repair

  • Clean the cylinder filter every few weeks so debris never reaches the pump.
  • Scrape plates and pick up broken glass by hand before loading; it is the number one cause of drain pump failure.
  • Run a hot cycle with dishwasher cleaner every few months to clear grease from the sump and pump chamber.

Compatible Models (Sample)

This part is listed for 649 Bosch models in our fitment data. Always confirm your exact model number on the appliance's rating plate.

Replaces or is replaced by: 00494772, 12054183

Repair Difficulty and Time

Difficulty: Moderate. Typical time: 40 to 70 minutes.

Frequently Asked Questions

Do I need to pull the dishwasher out of the cabinet?

Usually no. On most Bosch, Thermador and Kenmore Elite models the pump is reachable from the front once the base panel is off. Pull the machine out only if the pump sits toward the rear on your model.

Will 00642239 fit my Kenmore Elite dishwasher?

It is listed for the Kenmore Elite 630 series, including models 63016304404 and 63016303405, because those machines are built by Bosch. Confirm your full model number before ordering.

Can I clean the old pump instead of replacing it?

If the impeller is only jammed by glass, clearing it may work. If the impeller vanes are chipped or the motor hums without turning, replace the pump.

Final Checklist

  • Power off and sump emptied
  • Toe kick and base panel removed
  • Connector unplugged without pulling on wires
  • Old pump unlocked by tab and quarter turn, sump cleared of glass
  • New pump seal seated and pump rotated until it clicks
  • Connector latched and drain cycle tested with panels off
  • Panels refitted and floor checked dry

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