Sump & Heater Assembly

About This Part

# Sump & Heater Assembly for Bosch/Siemens Dishwashers When your dishwasher fails to heat water or you notice pooling water at the bottom, a faulty sump and heater assembly is often the culprit. This essential component circulates and warms water during the wash cycle, so when it wears out, your dishes won't get clean and leaks become inevitable. This genuine OEM replacement (reference 00263090) restores your dishwasher to full working order. It's a moderately challenging repair rated 3 out of 5 for difficulty, typically taking an experienced DIYer 45 minutes to an hour. Most of this time involves accessing the component beneath the lower spray arm and removing the old assembly. Before you start, drain any remaining water completely and ensure the power is disconnected. When installing the new sump, take care to seat the rubber seals properly—this prevents future leaks and ensures optimal heating performance. This part suits Bosch and Siemens models across their ranges. However, before ordering, verify your appliance's E-Nr model number on the rating plate inside the door edge. This ensures perfect compatibility and eliminates any fitting issues.

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