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Cat Pumps 5CP3120 - CAT Pumps 3500 PSI 4.5 GPM Replacement Triplex Plunger Pressure Washer Pump (Belt Drive) for sale.

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CAT Pumps 3500 PSI 4.5 GPM Replacement Triplex Plunger Pressure Washer Pump (Belt Drive)

Cat Pumps Power Equipment and Accessories
Model: 5CP3120
(Based on expert analysis, manufacturer ratings and customer reviews)
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
1 Review
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Factory DirectFactory Direct
Ships in 2-5 Business Days

Factory items ship direct from the manufacturer. Shipping times vary.

No Sales Tax*
(Except IL)
No Sales Tax*
(Except IL)
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High Quality Replacement For Worn Out Pumps
Professional grade pump for belt-driven pressure washers
Can be rebuilt to save money and extend life of pump

Triplex Plunger Pump
Belt driven for less wear and extended life
Ceramic plungers assure even wear and extended seal life
Triplex plunger design provides smooth liquid flow

Convenient connection to most 3/4" gas engine flange
20mm solid shaft spins at 1645 rpm
Bore diameter 16mm (.630"); stroke 18mm (.709")
Suited for 14-HP engines; no siphon tube barb
Maximum water temperature of 160 degrees

Powerful And Versatile
Will push 4.5 gpm @ 3500 psi

Does Not Include Adjustable Pressure Unloader Or Injector
Pump ships as shown; you will need to reuse your connectors or purchase them separately
Chemical Injector (ACI005) & unloader kit (302) (sold seperately)

Pump Does Not Come With Mounting Brackets (Part 1346D)

Be Sure To Measure Shaft And Flange Bolt Holes Accurately!
There is a 25% restock fee on returned pumps

Pump Brand
Pump Type
Triplex Plunger
Adjustable Pressure
Accessory Grade
Accessory Style
Rated PSI
3500 PSI
20 Pounds
Product Length
10.35 Inches
Product Width
10.0 Inches
Product Height
5.78 Inches
Consumer Warranty
5 Years
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*Ask Brian about the Cat Pumps 5CP3120. Sorry, no repair questions:




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  1 Question
Q: Is this a right or left hand mount?
by Margaret Mulberry from Illinois on March 03, 2016

A: This is actually a universal mount, can be mounted either left or right orientation.
by Brian, Product Expert
Cat Pumps 5CP3120 Reviews & Ratings
Overall Rating
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
I'd Buy It Again (1)
Reliable (1)
Price (1)
Easy To Use (1)
Does Not Come With The C... (1)
Bad Instructions (1)
1 Review  Sort by 
Gary C.
Bozeman, MT
Purchased from Power Equipment Direct
Purchased 1/23/16
5 out of 55 out of 55 out of 55 out of 55 out of 5
Cat Pump & Ped Experience
I have used this model of CAT pump for years. First time using PED as a supplier. Experience was good. Only cons were this:
1. Shipping was a slow even for using the free shipping option. Took 10 days from Florida to Montana.
2. Asked PED if the pump could be used right or left drive - was told that this pump was not set up for both but could be converted. I knew better so I bought it anyway. This pump can always be used either side.
3. Had to buy the unused shaft cover.
Pros: Easy To Use, Price, Reliable, I'd Buy It Again
Cons: Bad Instructions, Does Not Come With The Cover For The Side You Are Not Using
Gary Recommends This Cat Pumps Product
Brian, the Pressure Washer Expert
Product Expert
This unit ships from the manufacturer- that's the "direct" part of Pressure Washers Direct. Our web page for this pump says "Factory Direct; Ships in 2-5 Business Days; Factory items ship direct from the manufacturer. Shipping times vary."

You submitted your order on Saturday, 1/23; we transmitted the order the same day. It shipped on Monday, 1/25- so it went out in 1 business day (Monday thru Friday, excluding holidays). That is better than the Ships In 2-5 Business Days we promised!

A further check shows that UPS delivered it to you on Monday, February 1st; the 6th business day after you placed your order. They don't show any weather delays, so that should be typical for UPS.

The shaft cover is included with the pump by CAT; there was no additional charge for it.

We're glad you're happy with the pump!
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  • Ships via FedEx Ground
We currently CANNOT ship this product to Canada or any destination outside of the United States

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Buy CAT Pumps 3500 PSI 4.5 GPM Replacement Triplex Plunger Pressure Washer Pump (Belt Drive) at Power Equipment Direct. Read reviews and articles. Wide Selection of accessories available, including Pressure-Pro Low Pressure 4000 PSI Chemical Suction Injector, Briggs & Stratton Pressure Washer Pump Saver (4 Oz.) and CAT Brand Pump Crankcase Oil (21 Oz.).

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