Product Description

Balboa BP7 Control Box 5.5kW Heater – 51-G5361-K Replacement Spa Pack

Get your hot tub back up and running with the Balboa BP7 Control Box, a reliable 5.5kW heater replacement built to restore full function to your spa system. Whether your old Energy Saver control box has failed or you're upgrading your spa pack, this control box delivers the power and precision your tub needs.
Shop and order at Western Tub and Pool

Why spa owners choose the BP7 Control Box

Powerful, dependable heating

The 5.5kW flow-thru heater warms your spa efficiently, with built-in overheat protection to keep your system running safely.

Runs your whole system

Supports up to four pumps (Pump 1-4) plus a blower, giving you full control over every function of your spa from one central unit.

Effortless installation

Plug-n-Click connectors for pumps, blower, ozone, and lights mean no complicated wiring. Mounting hardware and instructions are included to get you set up fast.

Smart, flexible configuration

The BP7 circuit board offers up to 7 configurable relays/outputs, with 32 different setup options to match a 1- to 4-pump system.

Advanced M7 sensor technology

Dual internal temperature and flow sensors monitor your spa automatically, eliminating the need for an external pressure switch.

Built for compatibility

Works with popular topside panels (sold separately), including TP400, TP500, TP600, TP800, and SpaTouch, with light output of 12V and configurable ozone and blower outputs (120V/240V).

Product Specifications

• Part Number: 51-G5361-K
• Cross-reference numbers: G5361, 51G5361K, HQP-85-8757
• Brand: Balboa Water Group
• Heater: 5.5kW stainless steel flow-thru heater
• Voltage: 115/230V systems (voltage specifications vary by configuration — confirm your exact setup by calling or emailing our team)
• Dimensions & Weight: Varies by configuration. Call 1-855-248-0777 or email fixmytub@gmail.com with your part number or hot tub make, model, and serial number, and we'll confirm exact specs for your order.

Compatible Hot Tub Models

The Balboa BP7 control box is a common replacement across many hot tub brands and models, and compatible configurations are continually updated in our online catalogue. Because exact model fitment depends on your spa's existing control system and topside panel, we recommend confirming compatibility before ordering.
To check if this part fits your hot tub:

• Browse our online catalogue for a full list of compatible models, or
• Call us at 1-855-248-0777, or
• Email fixmytub@gmail.com with your part number (if known), or your hot tub's make, model, and serial number
  Related retrofit and associated parts available through our catalogue include 5.5kW and 4.0kW BP7 retrofit kits (with TP500 or TP600 topsides), 4.0kW control-only options, and compatible heater assemblies with built-in sensors — all searchable by part number or cross-reference.

Frequently Asked Questions

What's included with the Balboa BP7 Control Box?

This listing includes the control box only. The topside control panel is sold separately and is available in several compatible options, including TP400, TP500, TP600, TP800, and SpaTouch.

Will this replace my old spa pack?

The BP7 control box is frequently used as a replacement for older or failed spa packs, including systems originally equipped with Energy Saver control boxes. For exact compatibility with your specific model, check your part number or contact our team.

How many pumps can this control box support?

The BP7 supports up to four pumps plus a blower, with 32 configurable setups to match your spa's pump arrangement.

Do I need an electrician to install this?

The BP7 features Plug-n-Click connectors for pumps, blower, ozone, and lights, reducing the need for complex wiring. Mounting hardware and instructions are included. For safety and warranty purposes, we recommend professional installation.

How do I know if this is the right part for my hot tub?

The easiest way to confirm fit is to check your existing part number against our catalogue listing, or send us a picture of your current control box along with your hot tub's make, model, and serial number.

Hard-to-Find Parts? We Can Help

Looking for a part you can't find listed? Send us an email at fixmytub@gmail.com and our team will help track down the hard-to-find hot tub and spa parts you need.
A note on part numbers and international stock:
As an international e-retailer, Western Tub and Pool sources inventory from warehouses across multiple regions. Because shipping origin affects delivery, we've added region suffixes to our part numbers so you know exactly where your part is coming from:

• U – United States
• C – Canada
• E – Europe
• A – Asia
  Please note that some products may be duplicated across regions under different suffixes. If you know your part number, check it against our catalogue listing. If you're unsure, send us a picture of the part along with your hot tub's make, model, and serial number, and we'll help you find the right match.

Shipping, Returns & Exchanges

We offer 30-day exchanges or store credit on eligible items. Please note that we do not provide refunds.
Return Process:

• Customers are responsible for return shipping costs
• Items must be returned within 30 days of purchase
  Important Notes:
• All recycled items are final sale and cannot be returned or exchanged
• Items must be in original condition to qualify for exchange or store credit
• As an international e-retailer and distributor, we work with manufacturers around the world. Please note that cross-border shipments may incur additional fees and tariffs imposed by your local government, which will be the responsibility of the package recipient.

Shop and order at Western Tub and Pool. Call 1-855-248-0777 or email fixmytub@gmail.com for assistance finding the right replacement part for your hot tub.