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OEM Technologies Fully Plumbed 3100 PSI 2.5 GPM Brass Head Vertical Axial Replacement Pressure Washer Pump Kit w/ Powerboost®

OEM Technologies Pressure Washers and Accessories
Model: 86CAV12B
(Based on expert analysis, manufacturer ratings and customer reviews)
3.0 out of 53.0 out of 53.0 out of 53.0 out of 53.0 out of 5
2 Reviews
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Garden Hose (Female)
Garden Hose (Female)
22m Threaded (Male)
22m Threaded (Male)
Direct Drive Vertical Axial Replacement Pump
Fits many brands & models up to 3100 PSI

7/8" Shaft & SAE Gas Engine Flange
Produces up to 2.5 GPM, suitable for homeowner units

Thermal Relief Protection
Prevents the pump from overheating

Fully Anodized Die-Cast Aluminum Crankcase
Prefilled with oil & sealed for simple installation

Brass Head
Sturdy & long-lasting; resists corrosion
PowerBoost« Technology enhances cleaning performance

Dual Oversize Radial Ball Bearings & Polished Stainless Steel Pistons
Better wear & friction resistance extends seal life

Threaded M22 Pump Outlet & Integrated Unloader
Connects to many hoses; starts easily

Complete Kit
Includes detergent siphon tube for soap application
New mounting bolts & 3/16" shaft key for a tight connection

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

Accessory Grade
Accessory Style
Garden Hose (Female)
22m Threaded (Male)
Rated PSI
3100 PSI
7 Pounds
Product Length
6.5 Inches
Product Width
9 Inches
Product Height
8.5 Inches
Consumer Warranty
1 Year
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  1 Question
Q: I have a msv3100 power washer pump that needs to be replaced can you tell me the best way and price to order?
by Joe from Nebraska on July 03, 2016

A: We are not able to reference a model number. In order to make sure it is compatible with you machine you need to be sure of a few things.
1. Engine shaft diameter size
2. What is the HP or CC of your engine
3. The number of bolt holes your pump has
4. Whether your pump is horizontally or vertically mounted
5. Confirm engine is less than 10 years old
After knowing those things we can better assist you in which replacement pump is right for you.
by Brian, Product Expert
OEM Technologies 86CAV12B Reviews & Ratings
Overall Rating
3.0 out of 53.0 out of 53.0 out of 53.0 out of 53.0 out of 5
Exceeded Expectations (1)
Price (1)
none of the above (1)
Unreliable (1)
Low Quality (1)
50% of respondents would recommend this product to a friend
2 Reviews  Sort by 
Linda S.
Saint Clair, MO
Purchased from Pressure Washers Direct
Purchased 4/12/17
Most Helpful Critical Review
1 out of 51 out of 51 out of 51 out of 51 out of 5
Poorly Made Junk
Upon the third use of this it failed. Melted the rubber. AND NOPE I DID NOT FORGET TO BE SURE IT HAD WATER IN IT...
Pros: none of the above
Cons: Low Quality, Unreliable
Linda Does Not Recommend This Product
Brian, the Pressure Washer Expert
Product Expert
I am so sorry you had problems with the pump. I checked our files and didn't see where you were talking to us, so I asked our rep at Simpson to step in and help you directly. He is sending a new pump kit and a return label for the defective one.

There are folks who will try a pump without water, or enough water, running through it. It may seem pretty basic, but when you're trying to troubleshoot over the phone it's a place to start- I'm sure no insult was intended, although I will pass your comments along to the folks at Simpson as well.

We appreciate your business, and apologize for any inconvenience.
Manufacturer Response
Brand Rep
Hello my name is Zac and I am the Assistant Service Manager for the FNA Group who manufactures the Simpson line of gas pressure washers.
First and foremost thank you for your purchase of our Simpson Gas Pressure Washer; if you need further assistance please contact me directly at 1-847-621-8954 or via email at I would be more than happy to help resolve any issues or questions you may have.

Thank you
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Timothy C.
Clearwater, FL
Purchased from Pressure Washers Direct
Purchased 8/16/15
5 out of 55 out of 55 out of 55 out of 55 out of 5
Swapped Out 2400 For 3100 Psi
I swapped out this 3100 PSI pump on a 2400 PSI Generac pressure washer with a Briggs & Stratton engine.

The holes matched perfectly, but it hung down a little lower than the old one did, so I had to remove a metal bar across the back. The bar wasn't really needed as it was for stiffening the frame, which to me was really overkill, anyway.

It works great with all the original equipment (hoses, wand, tips, etc).

I recently used it on my sidewalk and it worked great and took me much... more
Pros: Price, Exceeded Expectations
Timothy Recommends This OEM Technologies Product
Brian, the Pressure Washer Expert
Product Expert
For safety's sake, please check the PSI burst rating on your hose and nozzles! You may find that the hose and nozzles wear out sooner if they are consistently exposed to more pressure than they were designed for.

The last thing anyone wants is for your hose to split in the middle of a task, or your spray tip to launch across the yard because the connector failed.

Replacements rated for the increased pressure are available on our website. Just match your connectors for Replacement Hoses and the orifice size (probably 3.0) for Replacement & Accessory Spray Tips
Timothy's Experience With Pressure Washers Direct
Web Site


"You really need to get the technical specs on this pump and publish it on your website. It would have been nice to know up front that I was going to have to modify my pressure washer frame, instead of finding out after I bolted it on."
Brian, the Pressure Washer Expert
Product Expert
We pack our pages with as much information as we can get from the manufacturer. We attach manuals, installation drawings, brochures, etc. under the Specs tab as PDF downloads. Unfortunately there isn't a giant cross reference with every brand of pressure washer and every kind of pump. The best suggestion is to check the measurements provided very carefully, and if you have questions use the Technical Support Link to get the phone number for the pump manufacturer and give them a call.
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