15% Off Accessories Through Aug 10 · Use Code NEEDIT2026

Pump Repair Kits

Restore lost pressure, stop leaks, and extend the life of your pressure washer with the right pump repair kit. Matching the kit to your exact pump model prevents repeat failures and saves time on the job. This category groups seal, valve, packing, and complete rebuild kits so you can service common triplex plunger and diaphragm pumps with confidence. Use the guide below to confirm fit, choose the correct kit type, and prep for a smooth install.

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Stock the truck, replace worn parts and keep the next job moving. Use code NEEDIT2026 through Aug 10th.

Pump Repair Kits FAQ's

Change contaminated oil, verify unloader settings, purge air, and recheck for leaks under load. Keep inlet filtration clean to protect new valves and seals.
Yes. Replace seals/packings and valves as complete sets on all cylinders to maintain even compression and performance.
Basic hand tools work for most pumps, but some larger frames use dedicated seal-case or valve tools. Always follow the service manual and torque specifications for your model.
No. Use one material set matched to your application and listed for your pump model. Mixing materials or partial replacements can shorten service life.
If priming is slow, pressure surges, or pulsation persists after seal service, replace the valve kit. Cleaning may help with minor debris, but worn springs, seats, or cages require a new kit.
Weeping at the manifold, loss of system pressure, or water intrusion into crankcase oil. Inspect plungers and oil seals and replace seals/packings as a complete set.
Locate the pump’s model and series on the data plate, then match that exact model to the parts breakdown. Confirm plunger diameter and kit material. Most pumps use one seal kit; some valve designs require two valve kits—follow the parts list for your model.
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