Whirlpool Dishwasher Lower Spray Arm - WPW10491331

Restore proper lower-rack spray coverage with this genuine OEM Whirlpool Dishwasher Lower Spray Arm - WPW10491331. This lower spray arm rotates and distributes wash water across the lower rack to improve cleaning performance.

WPW10491331 is a genuine OEM Whirlpool dishwasher lower wash arm used when the original arm cracks, clogs, or no longer spins correctly. Replacing it helps restore spray coverage and lower-rack cleaning performance.

Fits These Brands / Families: Whirlpool, KitchenAid, Maytag, Jenn-Air, Amana, Estate, Roper, Admiral, and select Kenmore dishwasher platforms

Fits These Models: Example supported models include Whirlpool WDF520PADM9, WDT730PAHB0, WDT730PAHW0, WDT730PAHZ0, KitchenAid KUDE20IXSS3, and select Kenmore 665-series dishwashers that call for this exact OEM part number.

This part commonly replaces previous part numbers including W10491331, WPW10376691, WPW10342793, WPW10320512, 8579263, and related earlier service numbers.

Compatible Model Examples: KUDE20IXSS3, 66514545N710, WDT730PAHB0. These are examples, not every compatible model.

Fitment / What To Verify: Verify the complete dishwasher model number, arm location, hub or support, water-feed connection and mounting style.

Please confirm fitment with your appliance model number before ordering.

Is it time to replace?

• Common Symptoms: Poor lower-rack cleaning, weak spray action, or dishes that come out with residue.
• Visible/Sensory Cues: Cracked spray arm body, clogged spray holes, worn hub, or an arm that no longer rotates freely.

Pro Tip: Clean the filter and feed area when replacing the arm. Restricted water flow can mimic spray-arm failure and reduce the performance of the replacement.

Technical Specifications

Legacy part number(s)/code(s): W10491331, WPW10342793, W10837249, W10849471

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

Please note: Check the model diagram for any separate mounts, seals or retainers; the included components can differ by part number.