66DX Pumps

The 66DX series of pumps was a very popular pump placed on many pressure washers. The series consists of 3 pumps:
  • 66DX30G1I: 3.0 GPM, 4000 PSI max
  • 66DX35G1I: 3.5 GPM, 4000 PSI max
  • 66DX40G1I: 4.0 GPM, 4000 PSI max

These pumps are all basically the same and contain the same parts. The only difference lies in the crankshaft and that is what accounts for the difference in flow rates. Since all the parts are the same, all of them are only listed under the 66DX30G1I pump.

Need help repairing your 66DX pump? You came to the right place!
If you don't have one, here is a breakdown diagram for the 66DX pump
Start with figuring out the issue you are having. Click here to see our Troubleshooting Guide for this pump.

Below are some step-by-step repair guides for common repairs on 66DX pumps:
Valve Replacement
Seal Replacement

If you have any questions about your pump, don't hesitate to give us a call. If it's after hours or you don't get someone right away, leave us a message and we'll get back to you as soon as we can.

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