Replacement Parts Diagram for Pentair MasterTemp 300 460734 Heater
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$998.99Notify me
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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$32.99Notify me
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$51.99
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$70.99
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$2.99Notify me
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$42.99Notify me
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Most common fix Pentair Manifold Kit For MasterTemp and Max-E-Therm 300 Heaters$435.99Notify me
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$26.99
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$89.99
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$6.99Notify me
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Most common fix Pentair Thermal Regulator For MasterTemp and Max-E-Therm Heaters$62.99
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$379.99
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$59.99
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$589.99Notify me
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Most common fix Pentair Flameholder Kit For Max-E-Therm and MasterTemp Heaters$119.99
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$134.99
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$132.99
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Most common fix Pentair Back Side Panel For MasterTemp Heaters | Flue Stack Side$154.99Notify me
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Most common fix Pentair Molded Manifold Side Panel For MasterTemp Heaters$259.99Notify me
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Most common fix Pentair Molded Side Service Panel For MasterTemp Heaters$259.99Notify me
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Most common fix Pentair Display Cover For MasterTemp Heaters$46.99
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$84.99
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$72.99
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Most common fix Pentair Control Board with 6 Button Pad For MasterTemp and Max-E-Therm Heaters | 42002-0007S$498.99
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$101.99
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Most common fix Pentair Dual Voltage Transformer Kit For Max-E-Therm and MasterTemp Heaters | 115V/230V$65.99
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$268.99
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Most common fix Pentair Terminal Board For MasterTemp And Max-E-Therm$39.99Notify me
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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$8.99
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$71.99
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Most common fix Pentair High Limit Switch for MasterTemp And Max-E-Therm Heaters$52.99
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Most common fix Pentair Air Flow Switch For MasterTemp And Max-E-Therm Heaters$119.99
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$495.99
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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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Replacement Parts Diagram for Pentair MasterTemp 300 460734 Heater with Clickable Hotspots for Manifolds, Control Boards, Coil Assemblies, and Gas Valves
Use the interactive parts diagram above to identify components for your MasterTemp 300 heater. Browse the links below for detailed specifications, compatibility information, and in-stock availability with best local pricing.
Restore heating efficiency with the 77707-0233 Tube Sheet Coil Assembly, built for MasterTemp and Max-E-Therm 300 BTU gas heaters.
Replace internal controls using the 42002-0007S Control Board with 6 Button Pad, a full replacement interface for both MasterTemp and Max-E-Therm models.
Restore full manifold assembly performance with the 474200 Basic Manifold Kit, compatible with many MasterTemp and Max-E-Therm units including the 300 model.
Maintain critical wiring connections using the 461107 Wire Harness for both Max-E-Therm and MasterTemp gas heaters.
Seal off winterized units or drain effectively with the U178-920P Drain Plug with O-Ring, made for all MasterTemp and Sta-Rite Max-E-Therm heater models.
Maintain blower housing integrity with the 77707-0011 Blower Adapter Plate Gasket Kit, used in both MasterTemp and Max-E-Therm assemblies.
Replace the gas delivery system with the 42001-0051S Combination Gas Control Valve Kit, used to regulate flow and pressure in your MasterTemp 300 heater.
Install the 77707-0015 Manifold Kit to replace damaged internal plumbing assemblies specific to the 300 BTU MasterTemp heater.
All critical replacement parts for the MasterTemp 300 heater are linked above with complete diagram support—covering coil kits, boards, valves, and connection hardware.