0001F88C Gemini Plus II Whirlpool Pump Replacement | 120V 8.5A
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0001F88C Gemini Plus II Whirlpool Pump Replacement
Restore your whirlpool bathtub to powerful, reliable performance with the 0001F88C Gemini Plus II Whirlpool Pump Replacement. Designed as a direct replacement for discontinued Gemini Plus II and ITT Marlow whirlpool bath pumps, this 120 Volt, 8.5 Amp pump delivers the dependable water flow, quiet operation, and long-lasting reliability your hydrotherapy system was designed to provide.
Whether you're replacing a failed pump or restoring an older whirlpool bathtub, the 001F88C offers an easy retrofit solution that works with many Gemini Plus II installations while preserving your existing plumbing configuration.
Important: This is an aftermarket replacement pump designed to replace compatible discontinued Gemini Plus II and ITT Marlow whirlpool bath pumps. It is not manufactured by ITT Marlow.
Why Choose the 0001F88C Replacement Pump?
- Direct replacement for many Gemini Plus II pumps: Designed to replace numerous discontinued ITT Marlow and Gemini Plus II pump assemblies.
- Powerful hydrotherapy performance: The 120 Volt, 8.5 Amp motor restores strong, consistent whirlpool jet action for a relaxing bathing experience.
- Variable-speed capable: When connected to a compatible variable-speed control system (sold separately), the pump can operate at multiple speeds. Without a compatible controller, it operates as a dependable single-speed pump.
- Quiet, efficient operation: Precision-balanced motor design helps reduce vibration while maintaining excellent water circulation.
- Easy retrofit installation: Designed to fit many existing Gemini Plus II plumbing configurations with minimal modifications.
- Installation hardware included: Includes one pump union, union gasket, and new pneumatic air tubing for a straightforward installation.
Technical Specifications
| Part Number | 001F88C |
|---|---|
| Voltage | 120 Volts AC |
| Current Draw | 8.5 Amps |
| Frequency | 60 Hz |
| Pump Type | Whirlpool Bath Pump |
| Operation | Single Speed or Variable Speed with Compatible Controller |
| Air Switch | Pneumatic Air Switch Compatible |
| Installation Hardware | Union, Gasket and Air Tubing Included |
Compatible Replacement For
The 001F88C is commonly used as a replacement for numerous discontinued Gemini Plus II and ITT Marlow whirlpool bath pumps, including compatible systems associated with part numbers such as:
- 0059F88C
- 0060F88C
- 006OF88C
- 0072E00C
- NR4A-C
- NL74620DB
- R150VS11C
- Additional Gemini Plus II pump assemblies with matching specifications
Compatibility should always be confirmed before ordering. Matching the original part number, voltage, plumbing orientation, and pump configuration is recommended to ensure proper fitment.
Installation Tips
- Disconnect electrical power before servicing the bathtub.
- Verify the original part number and pump orientation before installation.
- Inspect the plumbing unions and O-rings for wear.
- Install the included union gasket to help ensure a leak-free seal.
- Replace old pneumatic air tubing with the new tubing included in the kit.
- If using variable-speed functionality, pair the pump with a compatible variable-speed control system.
Why Buy From Whirly Bros?
- Specialists in discontinued whirlpool bathtub replacement parts.
- Expert compatibility assistance before you order.
- Fast shipping from California.
- Free U.S. shipping on qualifying orders.
- Phone and text support available if you need help identifying your original pump.
Need help confirming compatibility? Call or text (951) 897-1878 before ordering. Our experienced team can help identify the correct replacement for your whirlpool bathtub.
Frequently Asked Questions
Can this pump operate as a variable-speed pump?
Yes. When connected to a compatible variable-speed controller, the pump can operate at multiple speeds. Without the controller, it operates as a standard single-speed whirlpool pump.
Does this include installation hardware?
Yes. The pump includes one union, gasket, and new pneumatic air tubing for installation.
Will this replace my original Gemini Plus II pump?
It replaces many discontinued Gemini Plus II and ITT Marlow pumps. Because several versions were produced, we recommend verifying your original part number before ordering.
Can Whirly Bros help identify my pump?
Absolutely. Send us a photo of your pump label and plumbing configuration, and we'll help confirm the correct replacement before you purchase.
Trademark Disclaimer: Gemini Plus®, ITT Marlow®, and other manufacturer names and part numbers are used solely to identify product compatibility. Whirly Bros is not affiliated with or endorsed by the original equipment manufacturer unless specifically stated.

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Prompt replies to online order questions. A fair price for their products as well as free shipping and no tax!
Thank you for your positive feedback! We're glad you’re satisfied with our prompt service and affordable prices. We appreciate your support!
The guys at whirly bros are great to deal with. Very informative and honest. They went out of their way to send me pics of better pumps and explained what I would have to do to upgrade. I chose the plug and play option and it was exactly what I needed.
We try our best.
Thanks
Jesse
The pump was an exact fit to the one we took out. No plumbing changes needed. Customer service was awesome when we called with questions prior to ordering. Quick delivery. Thanks so much!
Thanks, we do our best, we know how important it is to make sure you are getting the correct part. Appreciate your business and review even more.
Best regards
Jesse Paredes
I received the pump in good time. Had a little trouble getting it to work. The owner talked me through it and it work perfectly after I got it installed. Only question I have is that it has a faint smell when in operation. I'm thinking cuc it's new. If still persists after time I might give me. Whirly a call back. He has been great to deal with. Very friendly and knowledgeable. Thanks very much. Kevin Wiest
Thanks Kevin, its new so that smell can be expected. We trust that this pump will work for many many years to come.
Best price on this pump and I looked everywhere. Fast shipping, they aren't kidding when they say same day shipping. I will continue to use them for pumps and parts.
Thanks for the kind words. We just know that nobody likes waiting and especially now a days everything's go-go-go. So we move quickly and ship same day, we make sure we have all parts ready to ship same day.
We appreciate your business 🙏.