The 00263099 is the OEM Bosch dishwasher sump drain hose that connects the sump assembly at the base of the dishwasher tub to the drain pump. This hose carries dirty wash water from the sump to the pump during the drain cycle. When the hose cracks, splits, or its clamps fail, water leaks onto the floor or the dishwasher fails to drain completely, leaving standing water in the tub after a cycle. This is a direct OEM replacement for the earlier 263099 part number.

✓ Model-Specific Repair Pages

Don't see your model? Contact us with your dishwasher model number and we'll confirm compatibility.

The 00263099 sump drain hose is constructed from heat- and moisture-resistant rubber rated for continuous contact with hot wash water. It connects via hose clamps at both the sump inlet and the drain pump outlet. The 00263099 part number supersedes the earlier 263099 — if 263099 appears on your parts diagram, 00263099 is the correct current replacement.

✓ Common Symptoms Fixed

Replacing the 00263099 sump drain hose typically resolves the following issues:

• Standing water remaining in the dishwasher tub after a cycle
• Water leaking from the base of the dishwasher onto the floor
• Dishwasher not draining or draining very slowly
• Visible cracks, splits, or deterioration on the existing drain hose
• Loose or failed hose clamp connections at the sump or pump

✓ Key Features & Specifications

• OEM Bosch part number: 00263099
• Supersedes: 263099
• Connects sump assembly to drain pump
• Heat- and moisture-resistant rubber construction
• Secured with hose clamps at both ends

✓ Buying Options

OEM New (00263099): The genuine Bosch sump drain hose. Exact OEM rubber compound and dimensions for a leak-free fit at both the sump and pump connections.

Used: A pre-owned OEM hose in serviceable condition. Suitable for a budget repair where the hose is intact and clamps are functional.

✓ Replacement Part Numbers

00263099 replaces the following part numbers:

• 263099

✓ Installation Tips

• Disconnect power to the dishwasher before beginning.
• Remove the lower access panel (toe kick) to expose the sump and drain pump area.
• Place towels under the work area — residual water will drain when the hose is disconnected.
• Loosen the hose clamps at both the sump inlet and the drain pump outlet using a screwdriver or nut driver.
• Slide the old hose free from both connection points.
• Slide the new 00263099 hose onto both connection points and position the clamps over the hose ends.
• Tighten the clamps securely, restore power, and run a drain cycle to confirm no leaks.