Whirlpool Dishwasher Circulation Pump Parts — Models & Compatibility

Your Whirlpool dishwasher won't spray water, leaves dishes dirty, or makes a loud grinding noise during the wash cycle. That's usually the circulation pump and motor assembly failing — it's the heart of your dishwasher's cleaning system. This hub covers W11612326 pump assemblies that fit most Whirlpool, Maytag, KitchenAid, Amana, and Kenmore dishwasher models from recent years.

Is This the Right Part for Your Model?

Check your dishwasher's model number first — it's typically on a sticker inside the door frame or along the top edge when you open the door. Look for WDF, WDT, KDFE, KDPE, MDB, or similar prefixes. This pump assembly (W11612326) replaces older part numbers W10879262, W10805386, AP7193729, and W11521435, so if you're replacing a pump that has any of those numbers, you're good to go.

The circulation pump sits at the bottom of the tub and forces water through the spray arms. When it fails, you'll notice dishes coming out dirty even after a full cycle, weak spray from the arms, or complete lack of water movement. Sometimes you'll hear a humming sound but see no water action — that's the motor running but the pump impeller broken or jammed.

About This Replacement Part

The W11612326 is a complete circulation pump and motor assembly, meaning you get both the motor and the pump housing in one unit. You don't need to buy separate components or worry about matching motor specs to pump housings. It's a direct OEM replacement that mounts in the same position as your original pump with the existing wiring harness and hose connections.

This assembly works across multiple brands because Whirlpool Corporation manufactures dishwashers for Maytag, KitchenAid, Amana, and many Kenmore models. The WDF and WDT series from Whirlpool use this exact pump, as do corresponding Maytag MDB models and KitchenAid KDFE units from the same production years. You're looking at models primarily from 2015 to present.

Common Signs You Need This Part

Dishes aren't getting clean. That's the #1 complaint. The dishwasher runs through its cycle, you hear water sloshing around, but when you open the door everything's still crusty. The pump's not generating enough pressure to blast food off plates.

Loud grinding or rattling during wash cycles usually means the pump impeller has broken fins or something's lodged in the housing. You might also notice water pooling at the bottom of the tub that won't drain properly — though that can also be a drain pump issue, the circulation pump plays a role in moving water through the system.

Error codes vary by model, but many Whirlpool dishwashers will throw a pump-related fault code when the control board detects the motor running without proper water flow. Check your owner's manual for specific codes, but if you've already ruled out spray arm clogs and the filter's clean, the circulation pump's usually the culprit.

What Makes This Pump Fail

Hard water deposits build up inside the pump housing over time, especially if you're not using rinse aid regularly. Calcium and mineral scaling restricts the impeller's movement until it eventually seizes. That's why dishwashers in areas with hard water tend to need pump replacements more frequently.

Small debris getting past the filter can jam the impeller. A piece of broken glass, a toothpick, even a twist tie can wedge into the pump and stop it cold. The motor keeps trying to spin, which burns out the windings or strips the coupling between motor and impeller.

Normal wear after 7-10 years of regular use is common too. The pump seals deteriorate, bearings wear out, and the motor loses efficiency. If your dishwasher's getting up there in age and the pump's making noise or leaving dishes dirty, replacement's usually more cost-effective than trying to rebuild the assembly.

Installation Considerations

You'll need to access the pump from underneath the dishwasher, which means either tipping the unit back or pulling it out from under the counter. Disconnect power first — either unplug it or flip the breaker. Shut off the water supply line too.

The pump's held in place by a mounting bracket and connected with a wiring harness plus several hose clamps. You'll need a nut driver set, pliers for the hose clamps, and probably a towel to soak up residual water when you disconnect the hoses. The whole job takes about an hour if you're methodical about it.

New pump comes ready to install. Connect the wiring harness — it's keyed so you can't plug it in backwards — then secure the inlet and outlet hoses with the clamps. Mount the bracket, slide the dishwasher back into place, restore power and water, and run a test cycle to check for leaks and proper spray action.

Cross-Reference Part Numbers

This W11612326 assembly supersedes several older part numbers that Whirlpool used for the same position. If you're replacing W10879262, W10805386, AP7193729, or W11521435, this is your updated replacement. The mounting points and electrical connections are identical — Whirlpool just updated the part number when they revised manufacturing specs.

Don't get confused by aftermarket numbers either. You'll see various third-party manufacturers listing compatible pumps with their own SKUs, but W11612326 is the current OEM Whirlpool number. Aftermarket options exist and some work fine, but if you want exact fit and finish, stick with the OEM assembly.

Verifying Your Model Compatibility

The model list below covers the most common dishwashers that use this pump. If your specific model isn't listed but has a similar prefix (like WDF or WDT for Whirlpool, MDB for Maytag, KDFE or KDPE for KitchenAid), cross-check the part number with your service manual or the sticker on your existing pump.

Whirlpool's parts lookup tool on their website is helpful too — enter your full model number and it'll show compatible parts. Just make sure you're looking at the circulation pump, not the drain pump. They're different assemblies and not interchangeable.