CAT 591-9401 Hydraulic Pump Piston
CAT 591-9401 hydraulic pump piston with approximately 1.69-inch outside diameter converts mechanical input into pressurized hydraulic fluid in compatible CAT piston pumps.
| Product Code | 591-9401 |
| Brand | CAT |
| Category | CAT Spare Parts |
| Condition | New |
| Availability | In stock |
| Price | Price on request |
Description
CAT 591-9401 is a genuine CAT hydraulic pump piston that reciprocates within the pump barrel to generate hydraulic pressure. Tight manufacturing tolerances help reduce internal leakage while maintaining efficient fluid displacement through continuous high-pressure cycles. CAT specifies approximately 4.25-inch overall length and 1.69-inch outside diameter. Official applications include large excavators, material handlers, mobile hydraulic power units and heavy wheel loaders. Verify pump group and barrel arrangement before installation.
Technical Details
Part Number: 591-9401
Brand: CAT
Part Type: Hydraulic Pump Piston
Overall Length: 4.25 in
Outside Diameter: 1.69 in
System: Piston Hydraulic Pump
Function: Hydraulic Pressure Generation
Operating Motion: Reciprocating
Condition: New
Stock Status: In Stock
Compatible Systems
CAT 349, 349 GC, 350, 352, 355, 374 and 395 excavators; MH3260 and MH3295 material handlers; 350MHPU mobile hydraulic power unit; CAT 988, 988 XE, 992 and 995 wheel loaders.