Aquatic 8078 MOTOR | ITT Marlow Gemini Plus R75A-C 3/4 HP Whirlpool Tub Pump Replacement

Replace your discontinued Aquatic 8078 MOTOR or ITT Marlow Gemini Plus R75A-C whirlpool bathtub pump with this premium 3/4 HP replacement from Whirly Bros. Designed as a direct replacement for many Aquatic and ITT Marlow whirlpool bath systems, this complete retrofit restores powerful hydrotherapy performance without the expense of replacing your entire bathtub.

If your original pump has become noisy, started leaking, seized, or stopped operating, this replacement delivers dependable performance, quiet operation, and long-lasting reliability.

Why Choose This Replacement?

• Premium replacement for the Aquatic 8078 MOTOR
• Replaces many ITT Marlow Gemini Plus R75A-C pumps
• Powerful 3/4 HP motor
• Quiet, smooth operation
• Built-in air switch for convenient Air Button control
• Durable construction for years of dependable service
• Designed for easy installation in many legacy whirlpool bathtub systems

Complete Installation Kit Included

Your purchase includes everything needed for a straightforward installation:

• ITT Marlow Gemini Plus R75A-C 3/4 HP Pump
• (2) Pump Unions
• (1) Six-foot length of air switch tubing

Unlike many replacement pumps sold online, we include the pump unions and air switch tubing to help simplify installation and save you time.

Common Signs Your Pump Needs Replacement

Replace your Aquatic 8078 MOTOR or ITT Marlow R75A-C pump if you notice:

• Loud motor or bearing noise
• Water leaking from the pump seal
• Pump hums but will not start
• Weak jet pressure
• Motor overheating
• Pump repeatedly trips the GFCI
• Cracked or damaged wet end
• Reduced whirlpool performance

Installing a new replacement pump restores proper water circulation and brings your whirlpool bathtub back to life.

Why Buy From Whirly Bros?

Whirly Bros specializes in whirlpool bathtub replacement parts—not hot tubs or swimming pools. Our team has years of hands-on experience identifying discontinued pumps and helping homeowners, plumbers, contractors, and service technicians find the correct replacement.

When you purchase from Whirly Bros, you receive:

• Expert product identification
• Fast order processing
• Same-day shipping on most in-stock orders
• Free U.S. shipping on qualifying orders
• Friendly technical support before and after your purchase

If you're unsure whether your Aquatic 8078 MOTOR or ITT Marlow Gemini Plus R75A-C is the correct match, send us photos of your existing pump label and plumbing layout. We'll help verify compatibility before you order.