KitchenAid Stand Mixer Worm Pinion Gear Assembly

The most common sign is a mixer that runs but doesn't spin the attachment, often accompanied by a grinding or clicking noise. If your motor sounds like it's working but the planetary head isn't moving, the worm gear has likely stripped.

This gear assembly is designed for a wide range of tilt-head and bowl-lift models, but it is not universal. You should verify your specific model number against the manufacturer's compatibility list before purchasing to ensure a proper fit.

Replacing the worm gear is a manageable DIY project for most home cooks, but it does require opening the mixer housing. You will need basic tools like screwdrivers and a wrench, and it is helpful to have a step-by-step guide or video tutorial specific to your model on hand.

No, this package includes only the gear assembly itself. You will need to purchase food-grade grease separately to lubricate the new gears during installation, which is essential for smooth operation and preventing premature wear.

While some original gears are made of sacrificial plastic to protect the motor from damage during an overload, a metal replacement offers increased durability for heavy-duty mixing. Ensure you don't force the mixer if it gets stuck, as the gear will no longer be the 'weak link' that breaks to save the motor.