Whirlpool Corporation 12-foot dishwasher drain hose extension 3385556, Replaces W10883343, WP3385556, 1059007, 4433403

Flexible white corrugated drain-hose extension for tall-tub dishwashers. It measures approximately 12 feet and routes wastewater from the dishwasher drain hose to the household drain connection.

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✅ Cross Reference Information

Common Symptoms

• Water leaking beneath the sink or dishwasher during draining
• Dishwasher water remains in the tub because the extension is kinked, obstructed, or routed incorrectly
• Wastewater backs up into the dishwasher because the drain line lacks a proper high loop or air gap
• The existing drain hose cannot reach the household drain connection without an extension

Check Before Replacing

• With power disconnected and the water supply turned off, visually inspect the extension for splits, crushed sections, kinks, abrasion, or loose connections.
• Check that the hose reaches the household drain without sharp bends or sagging sections that could restrict flow.
• Verify that the drain hose has a properly secured high loop or connects through a functioning air gap, following the dishwasher installation instructions.
• Inspect the sink, waste tee, or disposer connection for blockage; if a garbage disposer was recently installed, verify that its dishwasher-inlet knockout plug was removed.
• After reassembly, run a short rinse or drain test and observe the hose connections for leakage; stop the test if water leaks or electrical concerns arise.

Pro Tip

Part Details

Key Features

• Whirlpool genuine OEM accessory
• 12-foot maximum length
• Flexible corrugated white plastic construction
• Designed for tall-tub dishwasher drain applications
• Intended to extend the drain hose to a more distant household drain connection
• Whirlpool states that the hose must fit the dishwasher's 1-inch drain connection and meet applicable AHAM/IAPMO requirements

Installation Notes

• Disconnect electrical power before installation; do not rely only on the dishwasher controls.
• Turn off the dishwasher water supply under the sink before disconnecting plumbing.
• Installation may require moving or partially uninstalling the dishwasher and may involve some disassembly; follow the model-specific installation instructions.
• Route the extension without kinks or sharp bends and maintain the required high loop or air-gap arrangement.
• Secure the connections at the dishwasher and household drain, then check for leaks during a short test cycle.

Verified Compatible Models

2212413N414, 2213092N413, 2213099N413, 2213222N414, 2213223N414, 2213229N414, 2213473N413, 2213479N413, 2213809N710, 2214502N020, 2214523N611, 2214545N711, 2214573N612, 2214715N710, 2214792N512

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.