Replacement for Discontinued Kohler 73524 & 73524-AA Whirlpool Pumps

The Kohler 73524 and 73524-AA whirlpool pumps have been discontinued and are no longer available. These original systems utilized a digital push-button control that connected directly to the bottom of the pump and operated through an electronic circuit board.

Because the pump, digital button, and control board components are no longer manufactured, replacement parts are not available. If any of these components have failed, the recommended solution is to upgrade to this complete replacement system, which is designed to restore your whirlpool tub's operation with modern, readily available components.

The K-73524 Kohler Whirlpool Bath Pump Replacement is a purpose-built upgrade that revives aging Kohler whirlpool systems with precision, reliability, and spa-like versatility. Designed to replace the obsolete 73524-AA pump, this compact kit pairs a modern 8.5 amp, 120V variable-speed pump with an advanced control system and a sleek, secure keypad—delivering consistent massage patterns and dependable performance for years to come.

What’s included and what it replaces

• 8.5 amp 120V Variable-Speed Pump that adapts across High, Medium, and Low flow for tailored intensity
• CG AIR SYSTEMS Control Box for precise, responsive pump control at 115V
• White Variable-Speed Keypad with a 2.5" square footprint and a 1-1/4 "quare hole opening
• A free union to simplify connections and speed up installation
• Designed to replace the older Kohler 73524-AA pump with a modern, more reliable solution

Why this upgrade matters

Upgrade to the K-73524 and experience a more dependable hydrotherapy experience. A modernized electronics package reduces fluctuations in jet power, while the streamlined design minimizes vibrations and noise. The result is a calmer, more consistent soak that you can count on for daily spa-like relaxation.

Key features that elevate your hydrotherapy

• Precise speed control: Switch between High, Medium, and Low to dial in your preferred massage intensity without guesswork.
• Wave and Pulse modes: Beyond simple jet streams, these modes create varied, spa-worthy patterns for customizable hydromassage.
• Compact, space-efficient design: The control box is designed to tuck neatly under the tub, keeping components cleanly organized and accessible.
• Secure, easy-access keypad: The white keypad with a square hole opening and a 2.5" footprint offers a neat finish while making settings effortless.
• Reliable modern electronics: An updated pump and control system translate to steadier performance over time.

Installation and compatibility at a glance

The K-73524 kit is designed for straightforward retrofit within most standard Kohler whirlpool configurations. Key considerations include:

• Most installations require no plumbing modifications, and the compact base helps keep the setup quiet and stable.
• If upgrading from an older model, replacing the pump base helps prevent vibrations and ensures quiet operation.
• Electric compatibility: this replacement operates at 120V. If your current setup runs on 240V, you’ll need electrical voltage conversion.
• Safety first: plan for a dedicated GFCI-protected circuit to ensure safety and peak performance.
• Positioning: place the control box under the tub for easy access while maintaining a tidy installation.

Who this is for

Ideal for homeowners with aging Kohler whirlpool baths seeking reliable, customizable hydrotherapy without the hassle of frequent maintenance. It’s a smart retrofit for those who want to restore consistent jet action, reduce noise, and enjoy spa-like patterns with Wave and Pulse modes—all in a compact, easy-to-install package.

Practical tips for best results

• Before installation, verify 120V wiring and ensure a dedicated GFCI-protected circuit is in place.
• Replace the pump base if you’re moving up from an older unit to minimize vibrations and maximize quiet operation.
• Position the CG AIR SYSTEMS Control Box where it’s accessible but out of the way to keep the tub area clean.
• Use the Wave and Pulse modes to experiment with different hydrotherapy patterns—start with Pulse for a gentler start, then switch to Wave for broader coverage.

With the K-73524 Kohler Whirlpool Bath Pump Replacement, you’re not just swapping a component—you’re reimagining your soak. Expect reliable performance, intuitive control, and customizable hydrotherapy that fits seamlessly into your daily routine.