Jacuzzi Multi-Series 2″ MBT Pump Housing | Part #6500-546
Product Overview
A versatile pump housing designed for multiple Jacuzzi pump series including Piranha, Theramax, and Theraflo models. This complete assembly features 2″ MBT connections and includes plugs for comprehensive installation flexibility.
Key Features
- 2″ MBT connection design
- Multi-series compatibility
- Included drain plugs
- Professional-grade construction
- Universal application
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 6500-546 |
| Connection Size | 2″ MBT |
| Series Compatibility | Piranha/Theramax/Theraflo |
| Material | High-grade thermoplastic |
| Plugs Included | Yes |
| Brand Match | Jacuzzi/Sundance |
| Thread Type | Male pipe thread |
| Design Type | Wet end housing |
Exploded parts diagrams: This part is shown as item #6 on the Bracketless 56 Frame 60Hz, J-LX, J-LXL, J-400, J-300; item #7 on the Fixed Bracket 48 Frame 60Hz, J-300, J-200 exploded parts diagrams.
🔧 Bracketless 56 Frame 60Hz, J-LX, J-LXL, J-400, J-300 – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Impeller,Jacuzzi Bracketless 56fr/Fixed Bracket 48fr, 2.5hp |
| 12 | O-Ring, 1/2" ID, 3/32" Cross Section, Generic |
| 11 | Barb Adapter, Valterra 3/8" Barb x 1/4" Male Pipe Thread |
| 10 | Seal Plate, Bracketless 56 Frame |
| 9 | 34-105-W033K9 |
| 7 | O-Ring, Jacuzzi Bracketless 56fr/Fixed Bracket 48fr, Volute |
| 6 | Volute, Jacuzzi/Sundance J-LX/J-300 ◀ this part |
| 5 | Screw, Jacuzzi, 10-12 x 1" |
| 4 | 34-105-W033K4 |
| 3 | O-Ring, 2-9/16" ID, 3/32" Cross Section, Generic |
| 2 | Pump Union, 2" Female Buttress Thread x 2" Spigot, 45 degree |
| 1 | Pump Union, 2" Female Buttress Thread x 2" Slip |
🔧 Exploded diagram and parts
This part belongs to the Bracketless 56 Frame 60Hz, J-LX, J-LXL, J-400, J-300 assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
| No. | Part | Our part number | Availability | |
|---|---|---|---|---|
| 1 | ![]() |
Magic Plastics Union 0602-20 (2" Pump Union) | 0602-20 | 414 in stock |
| 2 | ![]() |
Waterway Union 400-4300 | 400-4300 | 78 in stock |
| 3 | ![]() |
O-Ring, 2-9/16" ID, 3/32" Cross Section, Generic | AS-208H | 51 in stock |
| 4 | ![]() |
Drain Plug, Carvin, with O-Ring, Quantity 2 | 31-1609-06R2 | 15 in stock |
| 4 | ![]() |
Drain Plug, Carvin, with O-Ring, Quantity 50 | 31160906R50 | 12 in stock |
| 7 | ![]() |
Sundance Jacuzzi Piranha Theramax Theraflo O-Ring 6500-545 | 6500-545 | 23 in stock |
| 11 | ![]() |
Valterra Adapter RF850 | RF850 | 361 in stock |
Complete impellers
| Part | Our part number | Availability | |
|---|---|---|---|
![]() |
Sundance Jacuzzi Piranha Theramax Theraflo Impeller 6500-549 | 6500-549 | 19 in stock |
Parts that go with this
| Part | Our part number | Availability | |
|---|---|---|---|
![]() |
Shaft Seal, 201, 3/4" Shaft, Buna | AS-066H | 101 in stock |
![]() |
Shaft Seal, 3/4" Shaft, Viton 201 | 201V | 186 in stock |
![]() |
Shaft Seal, PS-1902, 3/4" Shaft, Silicon Carbide PS-201 | PS-1902 | 23 in stock |
Applications
Specifically designed for:
- Piranha pump systems
- Theramax assemblies
- Theraflo configurations
- Professional installations
- Complete pump rebuilds
Construction Features
- Reinforced body design
- Precision threading
- Integrated seal points
- Strategic drain locations
- Optimized flow path
Installation Guidelines
- Verify pump compatibility
- Check thread condition
- Use appropriate sealant
- Maintain proper alignment
- Follow torque specifications
Design Benefits
- Universal compatibility
- Enhanced durability
- Easy maintenance
- Reliable performance
- Flexible installation
Compatibility Notes
Engineered for use across multiple Jacuzzi pump series with 2″ MBT connections. Ensures proper fit and function in Piranha, Theramax, and Theraflo models.
Maintenance Recommendations
Regular inspection of:
- Thread integrity
- Seal surfaces
- Plug condition
- Housing body
- Internal passages
Performance Features
- Optimized water flow
- Efficient operation
- Reliable sealing
- Long service life
- Professional serviceability
Alternate Part Numbers
- SD6500-546





































