Water Heater Systems - Pumps and Pressure $5,587.00 Sewershop carries a variety Pumps & Pressures replacement parts, including flow switches, fuel filters, transformers, fuel pumps, heater coils, and more! Part #DescriptionPriceQuantity 43118-00-X Water Heater Hi Limit Switch | 900K BTU $212.38 43120-00-X Water Heater Hi Limit Switch | 440K BTU $95.63 43121-00-X Water Heater Igniter | 900K BTU $85.63 43122-00-X Water Heater Igniter | 440K BTU $42.38 43123-00-X Water Heater Fuel | 900K BTU $37.50 43124-00-X Water Heater Fuel | 440K BTU $37.50 43436-00-Z Water Heater Primary Control | 900K BTU $297.50 43126-00-X Water Heater Transformer | 900K BTU $237.50 43127-00-X Water Heater 12V Transformer | 440K BTU $441.25 43129-00-X Water Heater Thermostat | 900K BTU $395.00 43128-00-X Water Heater Thermostat | 440K BTU $162.25 43119-00-X Water Heater Thermocouple | 900K BTU $300.00 43125-00-X Water Heater Fuel Filter | 440K/900K BTU $79.99 43416-00-X Water Heater Fuel Pump Shaft Coupling | 900K BTU $24.88 43417-00-X Water Heater Fuel Pump Shaft Coupling | 440K BTU $17.38 43656-00-X Water Heater Fuel Pump | 900K BTU $484.00 43429-00-Z Water Heater Temp Gauge | 440K/900K BTU $136.50 43163-00-Z Water Heater Fuel Solenoid | 900K BTU $183.75 43379-00-Z Water Heater Blower Motor | 900K BTU $550.00 43432-00-Z Water Heater Central Heater Coil | 440K BTU $1,925.00 43160-00-Z Water Heater central Heater Coil | 900K BTU $5,587.00