Mine came filled with oil, but I picked up a quart to have on hand if needed. Will change oil after initial 10 hours of run time.
Cat Pumps Pressure Washer Pump, 4000 PSI, 4.0 GPM, Direct Drive, Gas, Model# 67DX39G1L

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Shipping:
Free shipping (lower 48 states) - Available now
$19.99 Same DayStore Pickup:
3 in stock at Fredericksburg VA - Pickup in under 1 hr
- Pre-plumbed and pre-tested
- Fits 4-bolt engine face plates
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Description
Key Specs
Reviews
Q & A
Accessories
Warranty
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Product Summary
What's Included
- (1) Pressure washer pump
Downloads
Features + Benefits
- Pre-plumbed and pre-tested
- Fits 4-bolt engine face plates
Key Specs
| Attribute | Specification |
|---|---|
item# | A157594 |
Brand | CAT Pumps |
Manufacturer's Warranty | 12 months parts/12months labor |
Ship Weight | 30.0 LB |
Max. PSI | 4,000 |
| Attribute | Specification |
|---|---|
GPM | 4.0 |
Horsepower | 15 HP |
Product Type | Pump |
Shaft Diameter | 1 in |
Fuel Type | Gasoline |
Reviews
Questions & Answers
Questions
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· 11 years ago
Is pump oil included or do I need to purchase separately ?
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Dual500· 7 years ago
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Sulley· 11 years ago
My pump arrived full of oil from Northern. I would suggest ordering some CAT pump oil to have for the future as you should NEVER run motor oil or multi viscosity detergent oil in these pumps as it will foam and not lubricate and cool the pump correctly. Locating the correct oil locally can be tough and I would rather have the right oil on the shelf when I need it.
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Silverthorn· 11 years ago
Yes it is everything to connect this unit with your motor is packaged and ready to go. make sure you have the right shaft size
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ProductExpert43· 11 years ago
This Cat Pumps pressure washer pump is shipped with pump oil.
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· 8 years ago
will this pump replace a 4sf40gs1 pump on an older Northstar pressure washer
I need to refurbish my older cat pump pressure washer and instead of ordering new plungers, valves, o rings and gaskets, i figured i'd swap out pumps. My bolt circle (center of bolt pattern diameter) appears to be 7 inches, and I see this bolt circle accommodates a 6.5 inch span. Am I correct in how I measure this? If this isn't my replacement pump, which one would be. Thanks for any information you can give me.
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ProductExpert38· 3 years ago
This pump would not be a suitable replacement for 4sf40gs1. You would want to order our item number 781041. Pump 781041 is available to order through our sister company Jack's Small Engines. Please visit jackssmallengines.com for pricing and availability.
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ProductExpert41· 8 years ago
You are correct in how to measure the bolt circle of a pump but this particular pump will not replace a 4sf40gs1. You would want to order our item number 781041. This particular pump can be obtained through our NorthStar parts department. Their phone number is 1-800-270-0810.
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· 14 years ago
can this model pump be belt driven?
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Sulley· 11 years ago
This pump is designed to be mounted with the mounting flange directly onto it's power source, the gas engine. The design of this pump would not easily permit it to be driven by a belt as there is limited clearance on the pump drive shaft and the aluminum mounting flange would be in the way of any pulley's which you would need to drive it. You would have to modify this pump in such a way to use it other than intended that it certainly would not be returnable and the warranty would be void. I would suggest you find another pump more suited for your use.
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ProductExpert5· 14 years ago
This pump is direct drive. It cannot be belt driven.
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· 2 months ago
Down stream injector 4000 psi cat pump
1 answer-
ProductExpert5· 2 months ago
This 4000 PSI Cat Pump includes a down stream injector.
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· 4 months ago
Does this setup allow you to come off the trigger, and allow water to either dump on the ground or go to a tank?
1 answer-
ProductExpert6· 4 months ago
The Cat Pumps comes with a built-in unloader valve that allows you to release the trigger while the engine runs, placing the pump in "bypass" mode. By default, this unloader cycles water back to the inlet side of the pump, but for best results and to prevent overheating, this bypass water can be plumbed back to a buffer tank
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· a year ago
Does this pump work well with high temperature water
1 answer-
ProductExpert5· a year ago
The max temperature is 140 degrees Fahrenheit.
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· 4 years ago
What is the warranty
1 answer-
ProductExpert13· 4 years ago
This pump comes with a 1 year warranty.
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Anonymous· 4 years ago
Will this fit a Honda GX340 11HP?
1 answer-
ProductExpert12· 4 years ago
This pump requires a 15 HP gas engine.
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· 5 years ago
What kind of oil does it take
1 answer-
ProductExpert13· 5 years ago
This Cat Pump will take SAE30 non detergent pump oil.
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· 5 years ago
How much oil does the cat pump crank case hold
1 answer-
ProductExpert10· 5 years ago
The unit has an oil capacity of 22.6 oz.
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Warranty
Manufacturer's Warranty
12 months parts/12months labor
Extend Your Warranty Coverage with a Northern Protection Plan (NPP)
Repair Plan — 1 Year
A Northern Protection Plan is available after adding the product to your shopping cart.
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Item # A157594
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Specifications
4,000
3,000
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3,100
4.0
4.2
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2.5
15 HP
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Pump
Other
Oil
Pump
1 in
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0.75 in
Gasoline
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Natural Gas
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32 oz
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20 lb
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