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.
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On the Hayward AquaNaut 400 & 450 Cleaner diagram
This part
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Other parts on the same Hayward AquaNaut 400 & 450 Cleaner
OEM Hayward Lower Body PVXS0009-236 is a direct replacement component designed for AquaNaut 400 and 450 4-wheel suction-side pool cleaners. This durable lower housing serves as the structural base for critical internal components, helping maintain proper alignment, balance, and long-term performance. Its precision-molded frame supports the cleaner’s smooth movement and stable suction, ensuring full pool coverage across a variety of surface types. Installing this lower body restores structural strength and function when the original part has been compromised by wear or impact.
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OEM Hayward Lower Body: Built specifically for AquaNaut 400 and 450 models, providing factory-accurate fit and function.
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Foundation for Internal Parts: Serves as the base housing that secures internal drive and steering components for balanced operation.
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Supports Cleaner Movement: Maintains alignment and balance for consistent traction and maneuvering across pool floors and walls.
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Tough Pool-Ready Build: Crafted from rugged materials designed to withstand exposure to chemicals, UV rays, and mechanical stress.
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Restores Cleaner Structure: Replacing a damaged lower body reestablishes support for all systems, improving durability and efficiency.
- Hayward Aquanaut 4-Wheel: PHS41CST, PHS41CSV, W3PHS41CST, PBS42CST
- This lower body replacement may be compatible with your vacuum as well. Please check your cleaner's manual to ensure this replacement is compatible for your vacuum.





