Grundfos pump capacitors
We've documented the run-capacitor fitment for 3 Grundfos pump models spanning jet pressure pump and pressure booster pump, with values from 20µF to 40µF at 450V.
The run capacitor your Grundfos pump needs, by model. Match the µF and voltage to your own capacitor before ordering: voltage can go up (e.g. 450V for a 370V cap), never down. New to this? Our pump capacitor guide covers run vs start capacitors, how to read the µF off your own part, and the CBB60 / CBB65 / CD60 difference. Need the seal or bearings too? See Grundfos service kits and parts by model.
| Model | Capacitor | Source | |
|---|---|---|---|
| JP5 jet pressure pump | 20µF · 450V | Manufacturer-documented | See the part |
| JP6 jet pressure pump | 25µF · 450V | Manufacturer-documented | See the part |
| MQ3-45 pressure booster pump | 40µF · 450V | Customer-reported | See the part |
Source tells you how we know: Manufacturer-documented / Confirmed fit are sourced facts; Typical for this class / Customer-reported are best estimates. Always confirm the µF on your own capacitor. A linked µF value goes straight to that capacitor; prices are in NZD. Ships within NZ only.
Leaking at the shaft? The seal for these pumps: Grundfos JP5 / JP6 mechanical seal
Other Grundfos models
We're still confirming the exact capacitor for these. Know yours, or want us to check? Find it by µF or tell us.
Replacing it yourself? Step-by-step install guide: Grundfos pressure pump capacitor replacement
Check it's the capacitor first: how to test a pump capacitor with a multimeter · 5 signs your pump capacitor is failing.
Don't know the model? Find it by µF instead · Pump capacitor guide