R125A-C Gemini Plus Bath Pump Replacement | Whirly Bros

If your original ITT Marlow Gemini Plus R125A-C (0010F00C) whirlpool bath pump has become noisy, seized, started leaking, or stopped working, there's no need to replace your entire bathtub. Whirly Bros offers a premium replacement pump designed to restore the smooth, powerful hydrotherapy performance your whirlpool tub was built to deliver.

The original R125A-C was manufactured by ITT Marlow under the Gemini Plus product line and was supplied as original equipment to numerous whirlpool bathtub manufacturers. Although many of these pumps are now discontinued or difficult to source, Whirly Bros specializes in helping homeowners and service professionals find the correct modern replacement.

This replacement features a 120 Volt, 8.5 Amp, 1.25 HP single-speed motor engineered to provide outstanding water flow while operating efficiently. The energy-efficient design helps reduce power consumption without sacrificing the strong hydrotherapy performance your whirlpool bath was designed to deliver.

Whether you're repairing your own whirlpool bathtub or servicing a customer's system, this replacement pump provides dependable operation, quiet performance, and years of reliable service.

Why Replace Your R125A-C Pump?

Over time, whirlpool bath pumps wear from years of normal use. Common signs that your original ITT Marlow Gemini Plus R125A-C pump should be replaced include:

• Loud bearing noise
• Water leaking from the shaft seal
• Pump hums but won't start
• Weak or reduced jet pressure
• Motor trips the GFCI breaker
• Motor overheats
• Frozen motor shaft
• Excessive vibration during operation

Replacing a worn pump restores proper water circulation, stronger jet performance, quieter operation, and helps extend the life of your whirlpool bathtub.

Product Features

• Premium replacement for ITT Marlow Gemini Plus R125A-C
• Replaces OEM Part Number 0010F00C
• 120 Volt
• 8.5 Amp
• 1.25 Horsepower
• Single-speed whirlpool bath pump
• Energy-efficient motor helps reduce electrical usage without sacrificing performance
• Quiet, smooth operation
• Heavy-duty construction
• Built for residential whirlpool bathtub systems
• Long service life
• Excellent choice for homeowners and professional service technicians

Specifications

Manufacturer: Replacement for ITT Marlow Gemini Plus

OEM Part Number: R125A-C

Alternate Part Number: 0010F00C

Voltage: 120 Volts

Amperage: 8.5 Amps

Horsepower: 1.25 HP

Motor Type: Single Speed

Application: Residential Whirlpool Bath Pump

Compatible With Many Whirlpool Bathtub Manufacturers

The ITT Marlow Gemini Plus R125A-C was installed as original equipment in numerous whirlpool bathtub brands, including many models from:

• Aqua Glass
• Jason International
• Hydro Systems
• MTI Baths
• Lasco
• Aquatic Bath
• Pearl Baths
• MAAX
• American Standard
• Certain Kohler Whirlpool Tubs
• Many custom whirlpool bathtub manufacturers

Compatibility varies by model. Always compare your existing pump label, voltage, plumbing connections, discharge orientation, and horsepower before ordering. If you're unsure, Whirly Bros is happy to help identify the correct replacement.

Why Buy From Whirly Bros?

Whirly Bros specializes exclusively in whirlpool bathtub replacement parts and retrofit systems.

Before founding Whirly Bros, we worked directly with OEM manufacturers that designed and supplied many of the pumps, blowers, controls, heaters, and electronic systems used in whirlpool bathtubs throughout North America. That firsthand experience allows us to confidently help homeowners, plumbers, contractors, and service professionals replace discontinued components with modern, reliable solutions.

When you purchase from Whirly Bros you'll receive:

• Expert fitment assistance
• Same-day shipping on most in-stock orders
• Free U.S. shipping on qualifying orders
• Friendly technical support from real people
• Access to hard-to-find and discontinued whirlpool bathtub parts

Our goal is simple: help you repair your whirlpool bathtub correctly the first time.

Whirly Bros Expert Tip

Many ITT Marlow and Gemini Plus pumps look nearly identical but use different wet-end orientations, plumbing connections, motor frames, voltages, or plumbing sizes. Before ordering, compare your existing pump label or simply text us photos of your current pump. We'll help verify the correct replacement before you purchase.

Frequently Asked Questions

Is this a replacement for the ITT Marlow R125A-C?

Yes. This pump is designed to replace the ITT Marlow Gemini Plus R125A-C (0010F00C) used in many residential whirlpool bathtubs.

Is this a 120 Volt pump?

Yes. This replacement operates on 120 Volts and draws approximately 8.5 Amps, providing excellent energy efficiency while maintaining strong whirlpool jet performance.

Will this fit every whirlpool bathtub?

No. Compatibility depends on the original pump, voltage, plumbing connections, discharge orientation, and horsepower. If you're unsure, contact Whirly Bros before ordering.

Why is my whirlpool pump leaking?

Leaks commonly occur because of worn shaft seals, cracked wet ends, or aging pump housings. Replacing the complete pump is often the most dependable long-term repair.

Can I replace only the motor?

Sometimes. However, if the wet end or shaft seal is also worn, replacing the complete pump is usually the most reliable long-term solution.

Can Whirly Bros help identify my pump?

Absolutely. Simply call, text, email, or send us photos of your existing pump. We'll help identify the correct replacement before you order.