HEATER: J400, PLASTIC, 240V/5.5KW, N.AMERICA
About This Part
HEATER: J400, PLASTIC, 240V/5.5KW, N.AMERICA — a genuine Sundance Jacuzzi replacement part for spas and hot tubs. Part #6500-843.
This is an authentic Sundance Jacuzzi component, stocked and shipped by Sauna Company USA. Order genuine Sundance Jacuzzi part #6500-843 online with fast shipping, secure checkout, and expert support from our parts team.
- Manufacturer: Sundance Jacuzzi
- Part Number: 6500-843
- Category: Controls & Spa Paks › Heaters › Standalone Heaters
- Availability: Regular Stock
Detailed Description
The 6500-843 is a 5.5kW, 240V, 60Hz OEM plastic "Smart" low-flow heater for Jacuzzi and Sundance spas. It is designed for 2015+ Jacuzzi J-400/J-500 series and 10/2016+ Sundance 880/980 series hot tubs. It features a titanium element, 3/4-inch barb fittings, and includes a PWA harness connector.
Key Features and Specifications:
- Power: 5.5kW at 240V
- Compatibility: Used on 2015+ Jacuzzi J-400/J-500 and 10/2016+ Sundance 880/980 series.
- Design: Low-flow, plastic housing with a titanium element.
- Connections: 3/4" barb fittings.
- Included Components: PWA harness connector is generally included. Note: Does not always include the high-limit sensor (6600-168)
- Alternative Part Numbers: Replaces 6500-310 and 6500-301 in many applications, though it is specifically for newer models.
- Ships from the USA
- Secure checkout
- Lowest price guaranteed
Browse more: All Sundance Jacuzzi parts
Technical Specifications
| Part Number | 6500-843 |
| Brand | Spa Parts |
| Item Type | Part |
| Category | 6500-843,Controls & Spa Paks,Heaters,Part #6500-843,Standalone Heaters,Sundance Jacuzzi |
| Voltage | 240V |
| Shipping Method | Standard parcel |
| Availability | In Stock |
Contact us to confirm compatibility with your specific model before ordering.
Installation Overview
General accessory installation — follow all manufacturer instructions included in the package.
- Verify compatibility with your specific model using the part number before installing.
- If electrical work is involved, engage a licensed electrician — do not bypass safety interlocks.
- Use only manufacturer-approved tools and hardware. Substitutions may void the warranty.
- Test the system at low settings first after any installation or replacement.
- Register the part with the manufacturer to activate the warranty.
Compatibility & System Requirements
This part is designed for use with:
- Spa Parts Products
Not sure if this fits your system? Contact us with your model number and we'll confirm before you order.
Frequently Asked Questions
Is this a genuine OEM part?
Yes. Sauna Company USA is an authorized dealer for Spa Parts. All parts sold are genuine OEM components sourced directly from the manufacturer or authorized distributor, not aftermarket substitutes.
How do I confirm this fits my model?
Match the part number (SKU) on the product against the parts list in your equipment's owner manual, or locate the data plate on your unit and compare the model number to the compatibility table above. If unsure, contact us with your model number before ordering.
Can I return this part if it doesn't fit?
Parts & accessories are non-returnable once opened — incorrect parts cannot be resold as new. Please confirm compatibility before purchasing. We're happy to help identify the correct part for your system.
How long will shipping take?
Standard parcel orders ship within 1–2 business days. Estimated transit is 2–5 business days depending on your location. Expedited options are available at checkout.
Shipping & Delivery
Standard parcel shipping — ships within 1–2 business days via UPS or FedEx.
- Tracking number emailed when shipped.
- Estimated transit: 2–5 business days depending on destination.
- Expedited shipping options are available at checkout.
- Orders placed before 5pm ET on business days ship the same or next business day.
Questions about your order? Email info@saunacompanyusa.com or use our contact page.
Warranty & Returns Policy
Manufacturer Warranty: This part is covered by Spa Parts's standard manufacturer warranty against defects in materials and workmanship. Warranty duration and terms vary by part type — refer to the documentation included in the package or contact us for details.
Returns: Parts & accessories are non-returnable once ordered. This policy exists because installed or opened components cannot be resold as new. Please verify compatibility thoroughly before purchasing — we're here to help.
Defective items: If your part arrives damaged or defective, contact us within 48 hours of delivery. We will arrange a replacement at no charge with proof of the defect (photos or video).
For warranty claims, visit our Warranty Claims page.