MacMaxe Replacement Worm Gear & Pinion Kit for KitchenAid 4.5–5 Qt Mixers (K45, KSM90, KSM150, K5SS) – OEM-Equivalent

Revive Your KitchenAid with the MacMaxe Worm Gear & Pinion Kit

If your KitchenAid mixer hesitates to spin or emits grinding sounds, this MacMaxe replacement gear set offers a practical, DIY-friendly solution. The kit includes both the main worm gear and the companion pinion gear — the critical parts that transfer motor power to the mixing attachments. With a proper fit, you can enjoy smoother dough kneading, fluffy batters, and consistent planetary action without a costly service call.

Compatibility at a Glance

Engineered to meet OEM specifications, this repair kit covers popular 4.5-qt tilt-head models (Classic, Ultra Power, Artisan) and many 5-qt bowl-lift configurations. It fits models like K45, KSM75, KSM90, KSM150, and similar 5-qt bowl-lift units such as K5SS. The kit replaces part numbers 240309-2, 4162101, and 4162897, offering a precise, reliable substitute.

• 4.5-qt tilt-head suites: Classic, Ultra Power, Artisan lines
• 5-qt bowl-lift, heavy-duty configurations
• Exact fit across multiple KitchenAid generations

Quality Materials That Stand Up to Use

The worm gear is molded from high-strength, food-grade nylon, chosen for durability and to act as a sacrificial safety feature under overload. This helps protect the motor while keeping the mixer running. The pinion gear is a robust metal alloy, precision-machined to handle torque and deliver lasting performance.

What’s in the Box and What You’ll Do

• Worm gear
• Pinion gear
• Clear installation instructions
• Grease for a smooth break-in and quiet operation

Installation is approachable for a home fix. With basic tools and the included guide, many users complete the swap in under an hour. You’ll be reassembling the gearbox, seating the new gears, and re-greasing for optimal engagement.

DIY Repair That Saves Money and Time

Choosing MacMaxe means opting for a cost-effective alternative to full replacement or professional service. The kit is designed for straightforward assembly, helping you extend the life of your mixer while preserving its familiar performance for everyday baking and cooking tasks.

Why MacMaxe

MacMaxe focuses on reliable replacement parts for popular kitchen appliances. Each component is tested to meet or exceed original standards, backed by support that understands mixers and the value of getting back to your routine without unnecessary delays.