The Balboa M7 4KW Heater Tube (58104 / 58154) is a replacement heater tube built on Balboa's M7 heating technology for 4KW, 230V spa systems. This part is discontinued and has been replaced with part 58031.

DISCONTINUED. REPLACED WITH 58031.

Specifications:

• OEM part number: 58104 / 58154
• Manufacturer: Balboa
• Heater technology: Balboa M7
• Power rating: 4KW
• Voltage: 230V
• Union not included

Fits/replaces:

• Balboa-equipped spa systems compatible with the M7 4KW heater tube
• Superseded by Balboa part 58031

Common signs you need this part:

• Spa water is not heating or heating inconsistently
• Heater flow or hi-limit fault codes on the control panel
• Visible corrosion, leaking, or scale buildup on the existing heater tube

Returns & installation: As this part is discontinued, please confirm with us before ordering whether remaining stock is available, or consider the replacement part 58031. Installation should be performed by a qualified spa technician with power and water disconnected. Union fitting is not included and must be sourced separately if needed.

FAQ

Q: Is this part still available new?
A: This part has been discontinued by Balboa and replaced with part 58031. Contact us to confirm current stock availability.

Q: Does this heater tube include the union fitting?
A: No, the union is not included with this heater tube and must be purchased separately.