Cat Pump recommends 2X the flow on a booster pump. Example: 3.5 gpm Cat Pump means a 7 gpm booster. The booster psi does not need to exceed 40 psi, but will work with less.
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NorthStar Gas Cold Water Pressure Washer, Honda GX390 OHV Engine, 4200 PSI, 3.5 GPM, Cat Pump

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Order today to get this price.
Shipping:
$19.99 Same DayStore Pickup:
2 in stock at Fredericksburg VA - Pickup in under 1 hr
- Honda GX390 OHV engine for quiet, reliable performance
- CAT direct drive crankshaft triplex pump with thermal protection and ceramic plungers
- Oil drain cutouts for quick, clean engine and pump oil changes
- Easy Start prevents pressure buildup for smoother, easier recoil pulling
- Adjustable pressure allows easy control of the PSI to suit any job
Prop 65 Warning: See Details
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Description
Key Specs
Reviews
Q & A
Accessories
Warranty
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Product Summary
NorthStar pressure washers undergo thousands of hours of rigorous testing to ensure peak performance, plus include an industry-leading warranty to give you extra peace of mind.
What's Included
- (1) NorthStar Gas Cold Water Pressure Washer with Honda GX390 OHV Engine (1) 3/8in. x 50ft. heavy-duty nonmarking hose (1) Industrial-grade rear entry spray gun and lance with 18.5in. quick-connect wand (4) Professional-grade quick-connect nozzles (15°, 25°, 40° and detergent)
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EXCEPTIONAL CLEANING POWER
Delivering 4,200 PSI at 3.5GPM, this pressure washer is engineered to tackle tough mud, dirt and debris, making quick work of cleaning HEAVY-DUTY MACHINERY, OUTDOOR SPACES and more
BUILT FOR RELIABILITY
The HONDA GX390 ENGINE and CAT pump are a powerful combination, designed for long-lasting use and RELIABLE PERFORMANCE, ensuring your cleaning tasks are completed efficiently every time
MAINTENANCE SIMPLICITY
With features like OIL DRAIN CUTOUTS and EASY START, this model prioritizes user convenience, reducing downtime and keeping the machine running at peak performance
VERSATILE CLEANING SOLUTION
Whether you’re dealing with a dirty driveway or need to prep a patio for painting, the ADJUSTABLE PRESSURE settings and included 50 FOOT nonmarking hose provide the flexibility to tackle any job
MOBILITY ACROSS JOBSITES
The compact STEEL CART DESIGN, complemented by durable, FLAT-FREE TIRES, ensures this pressure washer can be easily transported to various locations, ready to deliver powerful cleaning wherever it’s needed
Features + Benefits
- Honda GX390 OHV engine for quiet, reliable performance
- CAT direct drive crankshaft triplex pump with thermal protection and ceramic plungers
- Oil drain cutouts for quick, clean engine and pump oil changes
- Easy Start prevents pressure buildup for smoother, easier recoil pulling
- Adjustable pressure allows easy control of the PSI to suit any job
- Rugged 1-3/8in. steel tube frame and 10in. flat-free tires for easy, durable portability
- Includes 50ft. heavy-duty nonmarking hose
- 3-year limited warranty on Honda engine; 5-year limited warranty on pump; 10-year limited warranty on frame
Key Specs
| Attribute | Specification |
|---|---|
item# | 157127 |
Brand | NorthStar |
Manufacturer's Warranty | 10 year limited warranty |
Ship Weight | 175.0 LB |
Pressure | 4,200 PSI |
Flow | 3.5 GPM |
Engine Brand | Honda |
Engine Model | GX390 |
Engine Displacement | 389 cc |
Fuel Type | Gasoline |
Pump | CAT Triplex |
Drive Style | Direct |
Number of Tips Included | 4 |
Adjustable Pressure | Yes |
Start Type | Recoil |
Engine Oil Included | No |
| Attribute | Specification |
|---|---|
Engine Oil Type | SAE 30 |
Fuel Capacity | 1.6 Gal |
Max. Inlet Water Temp | 140 °F |
Orifice Size | 3.5 |
Chemical Injector | Yes |
Hose Length | 50 ft |
Coupler Size | 3/8 in |
Nozzle Type | Quick-connect |
Quick Connect Nozzle | Yes |
Pump Oil Included | Yes |
Pump Oil Type | SAE 30 Nondetergent |
Low Oil Shutdown | Yes |
Thermal Protector | Yes |
Product Weight | 145.0000 lb |
Dimensions L x W x H (in.) | 40.25 x 26.0 x 23.75 in |
Reviews
Questions & Answers
Questions
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· 5 years ago
The Cat 66dx pump is rated for 4.0gpm. So why is this model showing 3.5gpm in the description?
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ChuckL21· 5 years ago
Helpful?
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NorthstarExpert29· 5 years ago
Cat offers two different 66DX models, one that has 3.5 GPM (66DX35G1I) and one that has 4.0 GPM (66DX40G1I). The pump on this machine has the 3.5 GPM model.
Helpful?
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· 5 years ago
If you were going to run this pump from a tank what booster pump would you suggest?
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ChuckL21· 5 years ago
Cat Pump recommends 2X the flow on a booster pump. Example: 3.5 gpm Cat Pump means a 7 gpm booster. The booster psi does not need to exceed 40 psi, but will work with less.
Helpful?
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NorthstarExpert7· 5 years ago
A pump than can produce 20% more flow than the pressure washer's flow output will be needed. 4.2 GPM would be the minimum needed. I would recommend item 2685562.
Helpful?
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· 5 years ago
Thermal protector is it for freezing weather?
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ChuckL21· 5 years ago
The pump should not be used in freezing temps. To store when not used use RV antifreeze or a pump protector product to replace the water in the pump. It also helps lube the seals.
Helpful?
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NorthstarExpert7· 5 years ago
The thermal relief valve keeps the pressure washer operating in a safe range to prevent overheating.
Helpful?
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· 6 months ago
Can you use warm water in this washer. If so, what is the temperature range
1 answer-
NorthstarExpert12· 6 months ago
The maximum inlet water temperature is 140° F.
Helpful?
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· 6 months ago
Is this model Carb Compliant, and whats the exact model number,
1 answer-
NorthstarExpert12· 6 months ago
This is NorthStar model 157127. It is not CARB compliant and cannot be shipped to California at this time.
Helpful?
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· 9 months ago
Can I buy the engine and pump with no cart
1 answer-
NorthstarExpert12· 9 months ago
The Honda engine is item #6066. The CAT pump is item #A157127.
Helpful?
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· 10 months ago
need washer wand. what is part number
1 answer-
NorthstarExpert12· 10 months ago
The spray gun, part #779165, is available through our sister company, Jacks Small Engines. Please visit www.JacksSmallEngines.com for pricing and availability.
Helpful?
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· 10 months ago
How do I hook up power washer hoses
1 answer-
NorthstarExpert11· 10 months ago
The pressure washer hose is equipped with quick couplers. Simply pull the collar back and push the coupler onto the water outlet nipple. The collar should slide over the ball bearings. Release the collar, making sure it springs back and reseats to its original (non retracted) position.
Helpful?
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· a year ago
What size is the chemical injector
1 answer-
NorthstarExpert12· a year ago
The chemical injector has a 2.1 mm orifice with a 3/8" outlet port and a 1/4" hose barb. It is rated with a 3 GPM flow rate.
Helpful?
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· a year ago
PRESSURE WASHER 157127 HOW MUCH SOAP WILL THIS USE IN 1 HOUR
1 answer-
NorthstarExpert12· a year ago
How much soap is used will depend on the use of the pressure washer. The chemical solution will be automatically mixed with the water at a ratio of 15 parts water to 1-part chemical solution.
Helpful?
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Warranty
Manufacturer's Warranty
10 year limited warranty
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 # 157127
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Specifications
4,200 PSI
7,000 PSI
4,400 PSI
3,000 PSI
3.5 GPM
3.8 GPM
4 GPM
5 GPM
Honda
Honda
CRX
CRX
GX390
GX690
CRX420
CRX420
389 cc
688 cc
420 cc
420 cc
Gasoline
Gasoline
Gasoline
Gasoline
CAT Triplex
General
CAT
UDOR
Direct
Belt
Direct
Belt
4
4
5
3
Yes
No
Yes
Yes
Recoil
Electric
Recoil
Electric and Recoil
No
Yes
Yes
Yes
SAE 30
SAE10W-30
10W-30
10W-30
1.6 Gal
13 Gal
2 Gal
1.6 Gal
140 °F
-
-
-
3.5
2.7
-
-
Yes
No
Yes
No
50 ft
50 ft
50 ft
-
3/8 in
3/8 in
-
-
Quick-connect
Quick-Connect
QC
QC
Yes
Yes
Yes
Yes
Yes
Yes
No
No
SAE 30 Nondetergent
Mi-T-M Pump Oil #AW-4085-0016
-
-
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
145.0000 lb
515.0000 lb
133.0000 lb
210.0000 lb
40.25 x 26.0 x 23.75 in
43.0 x 28.0 x 39.0 in
38.0 x 23.5 x 29.0 in
35.0 x 17.0 x 22.0 in
-
No
No
No
-
13 in
-
-
See All Gas-Cold Water Pressure Washers
See All NorthStar Gas-Cold Water Pressure Washers
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NorthStar Gas Cold Water Pressure Washer, Honda GX390 OHV Engine, 4200 PSI, 3.5 GPM, Cat Pump
Item # 157127
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