Cat Pumps 4000 Psi Pressure Washer Pump
Unleash extreme cleaning power with a CAT pressure washer pump 4000 psi. These heavy-duty pumps are engineered for demanding tasks, offering superior performance and durability for commercial applications or tough residential jobs. Achieve professional results with consistent high pressure. Don't forget to secure a new CAT pressure washer pump cap for protection. Browse our full range of CAT pressure washer pump parts for maintenance and repairs, or opt for a comprehensive CAT pressure washer pump rebuild kit to restore your pump to like-new condition.
Prices have firmed: the median sits at $149.99, 50% above its level from 32 days ago.
Our top picks: Cat Pumps 4000 Psi Pressure Washer Pump
Selected automatically from marketplace relevance and prices of 18 listed offers.
Budget pickOEM AR 1" Shaft 4000 PSI PRESSURE WASHER PUMP for Cat Pumps 66DX40G1I, 66DX35G1IThis OEM AR pressure washer pump features a 1-inch shaft and is rated for 4000 PSI.
Top 5: Cat Pumps 4000 Psi Pressure Washer Pump compared
| # | Product | Price | Rating | Country of Origin | Type |
|---|---|---|---|---|---|
| 1 | CAT Pumps Pressure Washer Pump, 4000 PSI, 3.5 GPM, Direct Drive, Gas | $399.00 | — | JP | WaterPump |
| 2 | OEM AR 1" Shaft 4000 PSI PRESSURE WASHER PUMP for Cat Pumps 66DX40G1I, 66DX35G1I | $349.99 | — | Unknown | Pressure Washer Pump |
| 3 | CAT Pumps 5PP3140CSS Triplex Pressure Washer Pump 4000 PSI 4.0-4.5 GPM | $700.00 | — | — | — |
| 4 |  Annovi Reverberi 4000 PSI PRESSURE WASHER PUMP for Cat Pumps 56HS, AAA 530007 | $487.99 | — | Unknown | Pressuer Washer Pump |
| 5 |  CAT PUMPS MODEL 333 4 FRAME PISTON PUMP 4.0 G.P.M. 200PSI pressure washer | $499.99 | — | United States | — |
- CAT Pumps Pressure Washer Pump, 4000 PSI, 3.5 GPM, Direct Drive, Gas
- OEM AR 1" Shaft 4000 PSI PRESSURE WASHER PUMP for Cat Pumps 66DX40G1I, 66DX35G1I
- CAT Pumps 5PP3140CSS Triplex Pressure Washer Pump 4000 PSI 4.0-4.5 GPM
- Annovi Reverberi 4000 PSI PRESSURE WASHER PUMP for Cat Pumps 56HS, AAA 530007
- CAT PUMPS MODEL 333 4 FRAME PISTON PUMP 4.0 G.P.M. 200PSI pressure washer
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Annovi Reverberi 1" Shaft 4000 PSI PRESSURE WASHER PUMP for Cat Pumps 66DX30G1I -
CAT 66DX40G1l Pressure Washer Pump Plumbed 4000 PSI 4 GPM -
CAT Pumps Pressure Washer Pump, 4000 PSI, 3.5 GPM, Direct Drive, Gas FREE SHIP -
Comet Pressure Washer Pump ZWD4040 4000 PSI General CAT AR Direct Drive Pump -
Cat 5PP3140CSS Pressure Washer Pump 4.5 Gpm 4000 PSI -
Cat Pumps Pressure Washer Pump, 4200 PSI, 3.5 GPM, Direct Drive, Gas,67dx39g1l -
Cat Pressure Washer Pump 67DX39G1I, 3.9GPM, 4000 PSI - pressure washerCat Pumps Pressure Washer Pump, 2000 PSI, 1.5 GPM, Direct Drive, Electric
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3/4" Shaft 3000PSI PRESSURE WASHER PUMP for Cat Pumps 3DNX25GSI -
CAT Pressure Washer Pump Assembly, 3300 PSI, 2.5 GPM, Direct Drive, Gas, Model# - pressure washerCAT Pumps Pressure Washer Pump, 2750 PSI, 2.5 GPM, Direct Drive, Gas
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CAT Pumps 67DX39G11 Triplex Pressure Washer Pump Barely Used Commercial OEM -
CAT Pressure Washer Pump Assembly, 3600 PSI, 3.0 GPM, Direct Drive, Gas, Model#
FAQ: Cat Pumps 4000 Psi Pressure Washer Pump
What does Cat Pumps 4000 Psi Pressure Washer Pump currently cost?
The 18 priced offers on this page sit between $79.99 and $950.00. The middle price (median) is $479.99 — as of September 2026.
Which brands appear most often in this overview?
By offer count, CAT Pumps (5), Cat Pumps (5) and The ROP Shop (4) lead this overview (as of September 2026).
What should you compare when choosing Cat Pumps 4000 Psi Pressure Washer Pump?
Key selection criteria on this page are Pressure (PSI), Flow Rate (GPM), Color, Unit System and Connector Type. The category filters cover each of these, so suitable models can be narrowed down step by step.