Whirlpool Dishwasher water supply manifold / center wash arm support WPW10571949, Replaces W10571949

Water supply manifold and center wash arm support that supplies wash water to the dishwasher center or middle spray arm. The part is also cataloged as a center wash arm support, middle spray arm water supply tube, or manifold assembly.

Is This the Right Part?

✅ Cross Reference Information

Common Symptoms

• Dishes in the middle or upper-rack area are not cleaned properly.
• The center spray arm does not receive adequate water or may not rotate normally.
• Visible cracking, deformation, separation, or blockage in the manifold/support.
• Water leakage may occur if the manifold or its connection is damaged or improperly seated.

Check Before Replacing

• With power disconnected, visually inspect the manifold/support for cracks, warping, loose sections, or damage around its water connection.
• Confirm the center spray arm is present, unobstructed, and able to rotate freely by hand without forcing it.
• Inspect the manifold openings and center-arm connection for debris; clean only with non-destructive methods and do not enlarge the openings.
• Verify the manifold is fully seated and aligned with its dishwasher water connection before operating the appliance.
• After reassembly, run a short cycle while observing for abnormal leakage around the manifold connection; stop the cycle if leakage occurs.

Pro Tip

Part Details

Key Features

• Whirlpool genuine OEM dishwasher component.
• Water-supply manifold with integrated center wash-arm support.
• Connects the dishwasher water supply path to the middle spray arm.
• Gray plastic construction; approximately 13 inches long and 3 inches wide according to the parts description.
• Sold as an individual replacement part.

Installation Notes

• Disconnect electrical power before servicing and follow the appliance model's service instructions.
• Remove or reposition the center spray arm and any obstructing dishwasher components only as specified for the appliance model.
• Compare the replacement part with the removed manifold and confirm the water connection and center-arm support are aligned before securing it.
• Ensure all manifold connections and supports are fully seated; do not operate the dishwasher if the assembly is loose.
• After installation, check the manifold area for leakage during a brief test cycle.

Verified Compatible Models

MDB4949SDE0, MDB4949SDE1, MDB4949SDE3, MDB4949SDH0, MDB4949SDH1, MDB4949SDH3, MDB4949SDM0, MDB4949SDM1, MDB4949SDM3, MDB4949SDZ0, MDB4949SHB0, MDB4949SHB1, MDB4949SHW0, MDB4949SHW1, MDB4949SHZ0

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