Whirlpool Dishwasher Center Spray Arm Assembly W11814182, Replaces W11174340, W11545334, W11789943

Is This the Right Part?

✅ Cross Reference Information

Common Symptoms

• Poor cleaning on upper-rack dishes — food residue remains after a full cycle
• Center spray arm not rotating during the wash cycle
• Weak or uneven spray coverage on the upper rack
• Rattling or knocking noise during operation
• Water leaking from a cracked or separated manifold body
• Spray openings visibly blocked by food debris or mineral deposits

Check Before Replacing

• Inspect and clean the spray-arm openings — mineral deposits and food debris are a common cause of reduced spray performance
• Check for rack interference — tall items or incorrectly loaded dishes can prevent the arm from rotating
• Inspect the feed tube and docking retainer for damage, blockage or poor seating
• Check the dishwasher filter and sump for blockage — a restricted filter reduces water pressure throughout the wash system
• Verify the water supply valve is fully open and the dishwasher is filling to the correct level
• Check for circulation-pump faults before replacing the spray-arm assembly

Part Details

Verified Compatible Models

KDTE204KBS2, MDB4949SKB1, MDB8959SKK0, MDB9959SKZ1

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