The 00668109 is the genuine OEM drain hose for Bosch dishwashers, replacing the legacy part number 668109. The drain hose routes wastewater from the drain pump to the household drain connection — when it cracks, kinks, or develops a leak, the dishwasher cannot drain properly and water may accumulate in the tub or leak onto the floor. This is a direct OEM replacement for a precise fit with the correct fittings, length, and flexible profile to match the original routing.

✓ Model-Specific Repair Pages

The drain hose connects to the drain pump outlet and routes through the cabinet to the sink drain or garbage disposal. A cracked or kinked hose causes standing water in the tub, error codes related to drainage (E24, E25 on Bosch units), or visible water under the dishwasher. Inspect the hose clamps and connection points at both ends during installation — a loose clamp is the most common cause of post-repair leaks.

✓ Common Symptoms Fixed

• Water not draining from the dishwasher tub
• Standing water remaining after cycle completion
• Drain error codes (E24, E25) that persist after cleaning the filter
• Water leaking under or around the dishwasher
• Visible cracks, kinks, or deterioration on the existing drain hose

✓ Key Features & Specifications

• OEM part number: 00668109
• Replaces: 668109
• Type: Dishwasher drain hose
• Compatible brand: Bosch
• Flexible, kink-resistant construction for tight routing paths
• Correct OEM fittings at both ends — no adapters required

✓ Buying Options

OEM (00668109): The genuine Bosch factory drain hose. Correct length, diameter, and fitting profile for a leak-free installation. Recommended over aftermarket alternatives to ensure a proper seal at both connection points.

✓ Replacement Part Numbers

• 00668109 (current OEM)
• 668109 (legacy / superseded)

✓ Installation Tips

• Disconnect power and turn off the water supply before beginning any disassembly.
• Pull the dishwasher forward to access the drain hose connection at the pump and at the sink drain or disposal.
• Note the hose routing before removal — photograph the path through the cabinet.
• Loosen the hose clamps at both ends and slide the old hose off the fittings.
• Slide the new hose onto the fittings and tighten the clamps firmly — do not overtighten, which can crack the fitting.
• Route the hose in a high loop (above the drain connection point) to prevent backflow — this is required by most plumbing codes.
• Run a short cycle and inspect both connection points for leaks before pushing the dishwasher back into position.