Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
Still not sure? Call (818) 818-6559 and we'll find it for you.
Waterway 400-5161B Split Nut | For Heaters | 2"
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CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
OEM Waterway 400-5161B Heater Split Nut is a 2-inch PVC locking nut designed to fasten and seal plumbing connections in pool and spa heating systems. Compatible with most 2-inch heater tubes, it ensures a secure connection to prevent leaks and maintain efficient water flow. Built from high-quality, chemical-resistant PVC, this split nut is engineered for long-term performance. It includes two screws for easy attachment, providing a firm and reliable fit without requiring extensive tools or modifications.
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Compatible with 2-Inch Heater Plumbing: Designed to match most 2" heater tube fittings, simplifying repairs and replacements in pool or spa setups.
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Leak-Resistant Performance: Forms a tight seal around plumbing joints to prevent water loss and maintain circulation integrity.
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Chemical-Resistant Material: Built from tough PVC that resists cracking, corrosion, and chemical damage under daily pool operation.
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Easy to Install with Screws: Includes two fastening screws for quick and efficient installation without specialized equipment.
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Ideal for Pool and Spa Maintenance: A reliable replacement part that ensures continued performance in heating systems for residential or commercial applications.
- (1) Split Nut
- (2) Screws
- Compatible with most 2" heater tubes
