Pentair C-Series Impeller Key 071046
Product Overview
The 071046 is a precision-engineered impeller key designed specifically for Pentair C-Series pumps. As a retailer of hot tub spare parts, I offer this essential component for secure impeller mounting and proper pump operation.
Key Features
- Designed for C-Series pumps
- 3/16″ specification
- Precision-cut dimensions
- Durable material construction
- Critical alignment function
Why Choose This Impeller Key
This impeller key is crucial for maintaining proper alignment and secure connection between the pump shaft and impeller. The precise manufacturing ensures proper fit and prevents impeller slippage, maintaining optimal pump performance and preventing potential damage.
Technical Specifications
| Specification | Detail |
|---|---|
| Model Number | 071046 |
| Series | Pentair C-Series |
| Size | 3/16 inch |
| Material | Hardened steel |
| Type | Impeller key |
| Application | Shaft-to-impeller coupling |
| Finish | Standard machine |
| Design | Square key |
Exploded parts diagram: This part is shown as item #18 on the Pentair C-Series Bronze Pump,w/Hair & Lint Strainer Option exploded parts diagram.
🔧 Pentair C-Series Bronze Pump,w/Hair & Lint Strainer Option – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Go-Kit 36, Aqua Flo Dominator/C Series Pump, Pre-`95 |
| – | Flange Assy, Pentair EQ Series, Hair & Lint Strainer, 6" |
| – | Pump, Pentair CMK-150, 15.0hp, 3-Phase, 220/440v, Bronze |
| – | Flange Assy, Pentair EQ Series, Hair & Lint Strainer, 4" |
| – | 34-102-1442 |
| – | Pump, Pentair,CHK-200 C Series, 20HP Commercial Pool Pump |
| – | 34-102-1435 |
| – | 35-102-2030 |
| – | Motor, Pentair C Series, 15.0hp, 575v, 3-Phase |
| – | Motor, Pentair C Series, 10.0hp, 575v, 3-Phase |
| – | Motor, Pentair C Series, 7.5hp, 575v, 3-Phase |
| – | Motor, Pentair C Series, 20.0hp, 200v/208v, 3-Phase |
| – | Motor, Pentair C Series, 15.0hp, 200v/208v, 3-Phase |
| – | 35-102-2016 |
| – | Motor, Pentair C Series, 7.5hp, 200v/208v, 3-Phase |
| – | Motor, Pentair C Series, 5.0hp, 200v/208v, 3-Phase |
| – | 34-102-1414 |
| – | Pump, Pentair CM-75, 7.5hp, 1-Phase, 230v, Bronze |
| 25d | 34-110-W037K25D |
| 25c | 34-110-W037K25C |
| 25b | 34-110-W037K25B |
| 25a | 34-110-W037K25A |
| 24c | 34-110-W037K24C |
| 24b | 34-110-W037K24B |
| 24 | 34-110-W037K24 |
| 24a | 34-110-W037K24A |
| 23 | 34-110-W037K23 |
| 22 | 34-110-W037K22 |
| 21 | Bolt, Pentair Purex Quietflo, Seal Plate, 3/8-16 x 3/4" |
| 20 | 34-110-W037K20 |
| 19 | 34-110-W037K19 |
| 18 | Impeller Key, Pentair C-Series, 3/6" ◀ this part |
| 17 | O-Ring, 5-3/4" ID, 1/4" Cross Section, Generic |
| 16 | Seal Plate, Pentair C-Series |
| 15 | 34-110-W037K15 |
| 14 | 34-110-W037K14 |
| 13 | 34-110-W037K13 |
| 12 | Screw, Pentair C-Series, Pump Base |
| 11 | Pump Base, Pentair C-Series |
| 10 | Volute, Pentair C-Series |
| 9 | Gasket, Pentair C-Series, Flange |
| 8 | Screw, Pentair C-Series, Volute |
| 7 | Drain Plug, Pentair C-Series, 1/4" |
| 6 | Body, Pentair C-Series, 5" Suction |
| 5 | 34-110-W037K5 |
| 5 | Basket, Pump, OEM Pentair C-Series |
| 4 | 34-110-W037K4 |
| 3 | Lid, Pentair C-Series |
| 2 | Lid Knob, Pentair C-Series |
| 1 | Hair and Lint Strainer, Pentair C-Series |
Performance Features
- Precise dimensional accuracy
- Optimal stress distribution
- Secure shaft coupling
- Vibration resistance
- Long-term durability
Applications
- C-Series pump maintenance
- Impeller replacement
- Pump rebuilds
- Preventative maintenance
- Emergency repairs
Installation Guidelines
- Verify key dimensions
- Clean keyway thoroughly
- Check for proper fit
- Ensure correct orientation
- Confirm full seating
- Test assembly rotation
Maintenance Tips
- Regular key inspection
- Check for wear signs
- Verify secure fit
- Monitor for looseness
- Replace if deformed
- Document replacement
Compatibility
This impeller key is specifically designed for Pentair C-Series pumps. Please verify your pump model specifications to ensure compatibility.
SKU: 071046 Categories: Pump Parts, Pumps
Note: All Pentair trademarks and product designs are registered and protected by their respective owners.
Important Considerations
- Never reuse a worn or damaged key
- Always inspect keyway for damage
- Ensure proper alignment during installation
- Replace key during impeller service
- Keep spare keys on hand
- Follow torque specifications













