73573-AA Kohler Pump Replacement Kit Easy Installation

The 73573-AA Kohler Pump Replacement Kit Easy Installation brings a modern, dependable upgrade to your hot tub or whirlpool. Designed as a seamless replacement for the legacy 73573-AA pump, this kit delivers smoother operation, precise variable-speed control, and installation that’s as simple as plug-and-play. If you’ve been wrestling with an aging brush-motor setup, this kit helps you reclaim power, consistency, and relaxation in one complete package.

Why this kit stands out

• 120V variable-speed performance — An 8.5 amp motor gives you adjustable flow for everything from a gentle, soothing massage to a robust jet experience. The variable-speed design not only enhances comfort but also promotes energy-efficient operation that can lower running costs over time.
• Flexible control options — Choose how you want to operate it: a wireless waterproof floating remote with hi/med/lo speeds and a 30-minute timer, or the built-in white push air button to configure or run the pump. Prefer your original setup? You can still use your existing keypad.
• Plug-and-play installation — The compact control box (VSPC) is engineered to sit neatly beneath most tub configurations, often eliminating the need for plumbing modifications. A clean, discreet upgrade that minimizes downtime.
• Rugged compatibility — Built to replace older brush-motor pumps, including ITT MARLOW models, this kit delivers improved performance and reliability over the legacy setup, reducing maintenance and unexpected outages.
• Two-way operation — Operate speeds via the remote, or keep the original keypad in place for a familiar control surface. The air button provides a dedicated alternative control method, giving you options that fit your preferences.
• Everything you need, included — The kit comes complete with a free union for easy plumbing connections and batteries included for the remote, so you can get up and running quickly without hunting for extras.

What’s included in the kit

• 1 × 120V 8.5A Variable Speed Pump
• 1 × 120V Control Box (VSPC)
• 1 × Wireless (Waterproof) Floating Remote Control (batteries included)
• 1 × White Push Air Button for the control box
• 1 × Free union for straightforward plumbing connections

Installation & compatibility

This modern replacement is designed for straightforward upgrade and compatibility with most standard tub setups. The compact control box is engineered to sit discreetly beneath the tub, so you can often complete the upgrade with minimal disruption. In many cases, no plumbing modifications are required, helping you return to relaxation faster.

Practical installation notes to ensure a solid setup:

• Base stability — The old pump base may not fit the new unit. Provide a stable foundation for the replacement to prevent vibrations.
• Electrical safety — Use a dedicated GFCI-protected circuit in wet environments to safeguard operation.
• Voltage alignment — This system is strictly 120V. If your current configuration runs on 240V, a voltage conversion is required to use this kit as a replacement.

Who this kit is ideal for

The 73573-AA replacement kit is perfect for hot tub and spa owners looking to restore peak performance without the hassle of a major retrofit. It’s especially valuable if you’re dealing with:

• Older Kohler spares and legacy brush-motor pumps that have begun showing wear
• Anyone who wants precise jet pressure control and a smoother, quieter pump operation
• DIY enthusiasts who appreciate a complete, ready-to-install package with all necessary hardware and remote control included

Practical benefits and real-world use cases

• Set the jet intensity just right for morning wake-ups or late-evening relaxation with the hi/med/lo speeds, then lock in a 30-minute session using the remote timer.
• Switch between remote control and keypad operation to suit how you use your spa day-to-day, without sacrificing performance.
• Energy efficiency matters—by dialing in the exact speed you need, you’ll reduce unnecessary wattage while maintaining the massage quality you love.
• The included union makes plumbing changes simple, so you’re less likely to encounter leaks or compatibility headaches during installation.

Why upgrade now

Choosing the 73573-AA Kohler Pump Replacement Kit Easy Installation means opting for a modern motor and control system designed for longevity, reduced maintenance, and consistent performance. It’s more than a swap; it’s a thoughtful upgrade that puts you back in control of your spa experience with predictable, customizable jet action, easy operation, and a reliable, durable build that’s ready for years of use.