Whirlpool Dishwasher Center Wash Arm Support / Upper Dishrack Manifold WPW10340542, Replaces W10340542, W10380275

Genuine Whirlpool dishwasher spray-arm manifold assembly (upper dishrack water-supply tube). It holds the spray arm and connects it to the dishwasher water-feed tube for water distribution.

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✅ Cross Reference Information

Common Symptoms

• Upper spray arm does not rotate during washing.
• Upper-rack dishes remain dirty or receive little water.
• Visible cracking, blockage, looseness, or leakage at the upper-rack manifold connection.
• Water pressure to the upper spray arm appears reduced when the manifold or its connection is damaged.

Check Before Replacing

• With the dishwasher empty and power disconnected, inspect the manifold and its water-feed connection for cracks, loose mounting, deformation, or visible blockage.
• Check that the upper spray arm is securely attached to the manifold and rotates freely by hand.
• Verify that the rear water connection seats correctly when the upper rack is fully pushed in.
• Clean only accessible mineral or food residue from the spray-arm openings and manifold connection; do not enlarge openings or disassemble sealed components.

Pro Tip

Part Details

Key Features

• Genuine Whirlpool OEM dishwasher component.
• Upper dishrack manifold / center wash arm support design.
• Supports the upper spray arm.
• Provides the water path from the dishwasher feed tube to the upper spray arm.
• Designed as an assembly rather than a separately documented replacement for individual internal valve pieces.

Installation Notes

• Disconnect electrical power before servicing the dishwasher.
• Align the manifold with the upper rack and snap it into place as applicable to the rack design.
• Attach the upper wash arm to the manifold and secure it according to the assembly design.
• After installation, rotate the spray arm by hand to verify free movement and check that the rear water connection is properly aligned.
• Do not operate the dishwasher if the manifold remains loose, cracked, or visibly leaking.

Verified Compatible Models

665.12762K310, 665.12763K310, 665.12773K310, 665.12774K312, 665.12776K310, 665.12776K311, 665.12793K311, 665.12793K314, 665.12803K310, 665.12833K313, 665.14754N512, 665.14759N511, 665.14799N513, JDB8000AWB1, JDB8000AWB2, JDB8700AWP3, JDB9200CWS1, JDB9200CWX3, JDB9800CWP2, KDFE104DSS3, KDFE104HBL1, KDFE204ESS3, KDFE204EWH1, KDFE304DBL1, KDFE454CSS2, KDTE104DSS1, KDTE104EBS4, KDTE204DWH1, KDTE204EWH2, KDTE234GBS1, KDTE254EBL0, KDTE254EBL2, KDTE254EWH3, KDTE304DBL0, KDTE334DSS1, KDTE334DWH0, KDTM354DSS3, KDTM354ESS0, KDTM384ESS3, KUDE40FXSS6, KUDE50FBSS0, KUDL15FXSS7, WDF730PAYB6, WDF730PAYT4, WDF730PAYT7, WDF775SAYW1, WDF780SLYB2, WDP560HAMZ1, WDT790SLYW2, WDT910SAYE1

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