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                    CAT Pumps 2850 PSI (2.7 GPM) Replacement Triplex Plunger Pressure Washer Pump w/ Adjustable Unloader
Model: 
                        
                        
                                                
                        
                        
                                                4DNX27GSI
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Recommended Accessories
 
                            
                                Expert Recommended Accessories
                                Selected by Jim, our Expert
                            
                        
                        Required Accessories
                        9
                    
                    These accessories are required to properly setup/install this product.
                    
                        Optional Accessories
                        10
                    
                    Features
Grade
Prosumer
Style
Gas
Inflow
Garden Hose (Female)
Outflow
3/8" Threaded (Male)
- CAT Brand Triplex Plunger Replacement Pump
- Direct replacement for the CAT 3DX25GSI pump
- Durable & long lasting; advanced design for smooth liquid flow
- Concentric Solid Ceramic Plungers
- Ceramic runs cooler, lasts longer; assures true wear surface
- Specially formulated seals deliver extended seal life
- Stacked 304SS Valve Design & Brass Manifold
- Makes servicing easy
- 0.280" stroke; 0.551" bore; requires 8.5 oz. pump oil
- Ultra-Compact 3/4" Hollow-Shafted Pump
- Designed for direct mounting to gas engine
- Integral Pressure Unloader
- Standard built-in bypass controls pressure & protects the pump
- 1/4" Fixed Chemical Injector Hose Barb
- Allows addition of pressure washer safe soap to the water flow
- 3/4" Threaded Swivel Garden Hose Fitting
- Makes connecting the supply hose easier
- Be Sure To Measure The Shaft & Flange Bolt Holes Accurately!
- There is a 25% restock fee for returned pumps
- See the Owner's Manual (under the Specs tab) for dimensions
- Please Call Us For Sizing Assistance w/ Information Below:
- 1. Age of Pump and Model # (must be no more than 15-yrs old)
- 2. Is the pump Vertical or Horizontal
- 3. Shaft Size - 3/4", 7/8" (vertical ONLY), 1", or Belt Drive XXmm
- 4. Engine Brand and HP (model # if available would be helpful)
- ***Shaft Size Measurements Must Be Precise***
California residents see 
                        WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
 For more information go to: www.p65Warnings.ca.gov
                Specifications
4DNX27GSI

Overview
Weight 
10.7 Pounds
Consumer Warranty 
2 Years
Product Length 
8.03 Inches
Product Width 
7.83 Inches
Product Height 
6.61 Inches
Accessories
Accessory Grade 
Prosumer 
Accessory Style 
Gas 
Inflow 
Garden Hose (Female) 
Outflow 
3/8" Threaded (Male) 
Rated PSI 
2850 PSI
Reviews
(1)
                        Cat Pumps 4DNX27GSI Reviews & Ratings
                    
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            CAT Pumps 2850 PSI (2.7 GPM) Replacement Triplex Plunger Pressure Washer Pump w/ Adjustable Unloader
             
                
                
                     
                    

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