Whirlpool Dishwasher Spray Arm - W10803178

Whirlpool Dishwasher Lower Spray Arm - W10803178

Restore lower-rack wash coverage and cleaning performance with this genuine OEM Whirlpool Dishwasher Lower Spray Arm - W10803178. This lower spray arm rotates during the wash cycle and distributes water across the lower rack to clean dishes more evenly.

W10803178 is a genuine OEM Whirlpool lower spray arm used when the original arm cracks, clogs, or no longer spins and sprays correctly. Major parts sources identify it as a lower spray arm or lower wash arm for Whirlpool-built dishwashers.

Compatibility: Whirlpool-built dishwasher platforms that call for this exact lower spray arm.

This part commonly replaces previous part numbers including W10605800 and 4283104.

Fits These Brands / Families: Whirlpool-built dishwasher platforms that use this exact lower spray arm. Verify the lower-rack location, center hub style, and part number before ordering.

Please confirm fitment with your appliance model number before ordering.

Is it time to replace?

• Common Symptoms: Poor cleaning on the bottom rack, weak spray action, or dishes coming out dirty after the cycle.
• Visible/Sensory Cues: Cracked spray-arm body, clogged spray holes, or an arm that no longer spins freely on the lower rack hub.

Pro Tip: Check the filter and lower spray-arm feed area for debris before replacing the arm so restricted flow does not affect the new part.

Technical Specifications

Legacy part number(s)/code(s): W10605800

Please note: These legacy parts have been replaced by this item. They may not look exactly the same, but the manufacturer of these appliances has assured us that they will function properly.

If you have questions, please message us before ordering so we can address your concerns. Please review our Return Policy before purchasing.