Pentair MasterTemp 300 460734 Heater Replacement Parts Diagram
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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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$999.99
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Most common fix Pentair Tube Sheet Coil Sealing O-Ring Kit For MasterTemp and Max-E-Therm 300 Heaters | 10 Pack$34.99
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Most common fix Pentair Manifold Kit For MasterTemp and Max-E-Therm 300 Heaters$499.99
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$54.99
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$71.99
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$1.99
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$49.99Notify me
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$99.99
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$30.99
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$5.99
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Most common fix Pentair Thermal Regulator For MasterTemp and Max-E-Therm Heaters$69.99
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$399.99
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$64.99
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$649.99
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Most common fix Pentair Flameholder Kit For Max-E-Therm and MasterTemp Heaters$149.99
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$157.99
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$151.99
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Most common fix Pentair Back Side Panel For MasterTemp Heaters | Flue Stack Side$269.99
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Most common fix Pentair Molded Side Service Panel For MasterTemp Heaters$299.99Notify me
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Most common fix Pentair Molded Manifold Side Panel For MasterTemp Heaters$339.99
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Most common fix Pentair Display Cover For MasterTemp Heaters$54.99
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$89.99
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Most common fix Pentair Control Board with 6 Button Pad For MasterTemp and Max-E-Therm Heaters | 42002-0007S$499.99
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$79.99
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$104.99
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Most common fix Pentair Dual Voltage Transformer Kit For Max-E-Therm and MasterTemp Heaters | 115V/230V$75.99
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$319.99
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Most common fix Pentair Terminal Board For MasterTemp And Max-E-Therm$49.99
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Most common fix Pentair Fireman's Switch Fuse 1.25 Amp MasterTemp Sta-Rite Max-E-Therm ETI 400 Gas Heaters$10.99
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$81.99
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Most common fix Pentair High Limit Switch for MasterTemp And Max-E-Therm Heaters$59.99
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Most common fix Pentair Air Flow Switch For MasterTemp And Max-E-Therm Heaters$126.99
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$54.99
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Replacement Parts Diagram for Pentair MasterTemp 300 460734 Heater with Clickable Hotspots for Blower Kits, Flameholders, Transformer Kits, and Control Components
Use the interactive diagram above to locate specific parts for your MasterTemp 300 heater. Explore compatible listings below for detailed specifications, wiring components, and full availability with best in-store pricing.
Replace worn controls with the 472610Z Switch Membrane Pad, compatible with MasterTemp and Max-E-Therm models.
Prevent leaks and maintain manifold performance using the 77707-0120 Manifold O-Ring Kit, designed for a reliable seal during heater operation.
Upgrade user controls with the 461106 6-Button Membrane Keypad, ensuring responsive input and interface clarity.
The 77707-0203 Flameholder Kit is built for MasterTemp 300 and 333 models to restore safe and consistent burner ignition.
Restore air flow and combustion with the 460757 Air Combustion Blower, engineered specifically for MasterTemp 300 natural gas heaters.
Ensure proper connectivity between critical components using the 42001-0104S Wiring Harness Kit, compatible with both MasterTemp and Max-E-Therm lines.
Maintain power distribution and relay functions with the 42001-0056S Terminal Board, used widely across Pentair’s gas heater models.
Step down voltage reliably for safe operation with the 42001-0107S Dual Voltage Transformer Kit, rated for both 115V and 230V configurations.
Find all the essential MasterTemp 300 heater parts—from flameholders and blowers to transformer kits and keypad pads—using the clickable diagram and verified part matches above.