Whirlpool W11101428 | Dishwasher Lower Arm | Genuine OEM Part (Open box)

Whirlpool W11101428 | Dishwasher Lower Arm | Genuine OEM Part (Open box).

Whirlpool W11101428 Dishwasher Lower Wash Spray Arm Assembly

Genuine OEM Lower Tub Basin Water Jet Wash Arm & Hub Assembly

Product Overview

The Whirlpool W11101428 is a genuine OEM dishwasher lower wash spray arm assembly. Mounted directly onto the central sump conduit hub at the bottom floor of the wash tub, this spinning spray arm receives pressurized wash water driven up by the main circulation pump. As water discharges through its angled nozzle ports, reactive hydraulic thrust propels the arm in a continuous 360-degree sweep, distributing high-velocity water jets across the entire lower dish rack to lift stubborn grease and food soil from plates, pans, and cookware.

As an Authentic Whirlpool Factory Certified Replacement Component , this lower spray arm directly replaces older or updated catalog part numbers including W10406822 , W10665718 , W10858786 , WPW10406822 , and AP6230883 . It is precision-molded from high-impact, heat-stabilized, chemical-resistant gray polymer engineered to withstand continuous exposure to boiling water, high pump pressures, and aggressive dishwasher detergents without warping or splitting at the seams.

When to Replace the Lower Spray Arm

• Poor Cleaning Results on Lower Rack Items: Plates, pots, and bowls loaded on the bottom rack consistently come out dirty, greasy, or covered in food residue because the spray arm is clogged or failing to rotate.
• Spray Arm Fails to Spin / Stalled: The circulation pump runs properly, but the spray arm remains stationary or sits loose/wobbly during wash cycles due to worn central hub bearing surfaces, cracked body seams dropping water pressure, or clogged nozzle ports.
• Clogged Nozzle Ports from Mineral Deposits or Debris: Hard water scale, seeds, or fine food particles have permanently blocked the spray nozzles, restricting water flow and reducing spray rotation velocity.
• Melted, Split, or Warped Plastic Arm Body: Items fallen onto the lower heating element have melted the plastic frame, or high pressure has split the arm along its molded seam line, causing water to spray sideways out of the split rather than up through the targeted nozzles.

Technical Specifications

• Part Number: W11101428 (Directly cross-references, updates, or replaces factory part numbers W10406822, W10665718, W10858786, WPW10406822, and AP6230883)
• Part Type: Dishwasher Lower Tub Basin Wash Spray Arm & Hub Assembly
• Material Profile: Heat-stabilized, high-impact polymer resin molded with directional spray nozzles and an integrated twist-lock retaining hub.
• Condition: Brand New, Genuine Whirlpool OEM Part
• Compatibility: Tailored specifically for modern built-in plastic and stainless-steel tub dishwashers manufactured under Whirlpool, KitchenAid, Maytag, JennAir, Amana, Admiral, and Sears Kenmore brand lines.

Professional Installation & Cleaning Guidelines

Safety Note: Replacing an internal spray arm is a simple, tool-free repair that does not require opening live electrical boxes or water valves. However, for general safety, turn off the appliance power button or unplug the dishwasher before reaching inside the tub cavity. Ensure the dishwasher interior has cooled down completely if a heated wash or dry cycle ran recently. Pro Tip (Tool-Free Quick Swap): Replacing the W11101428 lower spray arm takes less than 5 minutes. Roll the lower dish rack completely out of the tub to access the tub floor. Locate the central locking hub anchoring the spray arm to the diverter/sump conduit. Turn the central locking cap counterclockwise (or unlatch the locking tabs) to lift the old arm assembly straight off its shaft. Maintenance Hack: Before installing your fresh replacement spray arm, inspect and clean the lower micro-filter screen assembly beneath it. Removing trapped food particles around the filter plate ensures maximum water volume feeds up into your fresh spray arm. Warning: Align the new W11101428 spray arm squarely onto the center spindle mount, press down, and turn it clockwise until it locks firmly into place. Spin the new arm 360 degrees by hand to verify that it turns smoothly and freely without clipping the heating element or fine filter screen before reloading the lower dish rack.

Specifications

• Type: Spray Arm
• Country of Origin: United States

Condition: Open box