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.
FDXLBPK1930 | Hayward Bypass Cartridge Kit For FD Heaters
Pickup, delivery and shipping times are estimates, not guarantees.
Couldn't load pickup availability
● 41 in stock30-day returns Secure checkout
Have a question about this part?
Ask about fit, specs or shipping and get an instant answer.
Goes with this part
CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
OEM Hayward Bypass Cartridge Kit FDXLBPK1930 is engineered to maintain proper water flow in Hayward Universal H-Series Low NOx pool heaters. It is compatible with a full range of models including H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, and H400FDP. This kit plays a vital role in regulating internal water movement to ensure the heater operates at peak efficiency. By preventing flow-related issues, it helps sustain reliable heating performance while extending the life of the equipment.
-
Fits Key Heater Models: Compatible with Hayward Universal H-Series Low NOx models including H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, and H400FDP
-
Maintains Water Flow Efficiency: Controls water movement through the heater to keep it operating at optimal thermal efficiency
-
Prevents Flow Disruption: Helps avoid water bypass issues that can disrupt consistent heater performance or cause premature wear
-
Supports Performance Stability: Contributes to smooth and balanced heater function by maintaining proper hydraulic operation
-
Genuine OEM Reliability: Manufactured by Hayward to meet original specs for durability, precision, and safe long-term use
- Hayward H-Series FD Heater Models: H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, and H400FDP