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Pressure-Pro Giant DeVilbiss 2500 PSI 2.5 GPM Replacement Pump w/ Unloader

Pressure-Pro Pressure Washers and Accessories
Model: GXH2525A-111H
(Based on expert analysis, manufacturer ratings and customer reviews)
3.8 out of 53.8 out of 53.8 out of 53.8 out of 53.8 out of 5
4 Reviews
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Replacement For 2.5 GPM Oil-Free Strap Pump D22306
Longer lasting, higher quality components

Works With Many Brands Of Pressure Washer Up To 2600 PSI
Be sure to check Owner's Manual PDF for correct attachment points

Bare Pump Specifications:
Inlet port 1/2" NPT; discharge port 3/8" NPT
Width 8.325"; height 6.45"
Shaft diameter 7/8" x 3/16" keyway

Polyamide Plastic Valve
Resists corrosion & hard water mineral deposits

Adjustable Unloader
Allows you to set the pressure to suit the task

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

Not Included:
Thermal relief valve, high pressure discharge fitting,
Siphon hose, inlet fitting, & bypass valve
Can be purchased separately or as SLPGXH2525A-069

Pump Brand
Pump Type
Triplex Plunger
Adjustable Pressure
Chemical Injection
Siphon Tube
Accessory Grade
Accessory Style
Rated PSI
2600 PSI
Made in USA
9 Pounds
Product Length
7.86 Inches
Product Width
6.95 Inches
Consumer Warranty
1 Year
Subject: Store ID: Product ID: Data Category: Brand Category:

*Ask Brian about the Pressure-Pro GXH2525A-111H. Sorry, no repair questions:




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  2 Questions
Q: will this pump work on a vertical 7/8 shaft//looks like the same pump i have on it now//THANKS RICH
by Richard Wallingford from Pennsylvania on June 05, 2014

A: Replacement pumps need to fit exactly, so your best bet is to click on the Specs tab for this Pump and then look on the right side under Download Documents.

The Owner's Manual PDF has dimensional drawings so you can make sure the bolt pattern, shaft, and keyway will match what you already have. The PDF for the Installation Drawing has some helpful pictures from the folks at Pressure-Pro that may also prove useful.

by Brian, Product Expert
Q: I have an Excell xr 2500 which came with a totally differnt pump. I had seen somewhere where this pump was a better replacement for the manufactures pump. if this is so please let me know and do I need anything else to make the conversion.
Thank you for your valued assistance

by Michael Dodds from Maryland on May 28, 2011

A: More than likely you would not need any additional parts to make the conversion to this pump. However, you would definitely have to verify that your existing engine has a 7/8" shaft on it. This pump has a 7/8" shaft and will only match up accordingly.
by Brian, Product Expert
Pressure-Pro GXH2525A-111H Reviews & Ratings
Overall Rating
3.8 out of 53.8 out of 53.8 out of 53.8 out of 53.8 out of 5
None to display.
Not All Inclusive (1)
50% of respondents would recommend this product to a friend
4 Reviews  Sort by 
Purchased from Pressure Washers Direct
Purchased 3/22/13
Total Reviews
2 Reviews
Total Helpful Votes
15 Helpful Votes
5 out of 55 out of 55 out of 55 out of 55 out of 5
Small & Powerful
I did not want to spend the money for a new pressure washer. The Honda motor that the old DeVilbiss pump came off of is a very good power plant, although the old DeVilbiss pump was cheap and weak.

This small and powerful Giant pump bolted on easily and works great. I expect to get many years of service out of this washer. This is a residential use pump that, if needed, can be rebuilt at some distant point in the future.

The pump does not come with the hose connector displayed in the... more
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Matthew R.
Oxford, AL
Purchased from Pressure Washers Direct
Purchased 8/13/13
3 out of 53 out of 53 out of 53 out of 53 out of 5
Unfortunately, Have To Go The Store To Get Parts....
From the picture, it shows both inlet & outlet connections. Sadly, does not come with either so I have to go to the store & spend TIME and Money to get a functioning unit.

Also, the Key Drive is NOT included, so 3/16 key drive will also be on the purchase list. By the way, others are selling same pump with all the items above for only $10 more.
Cons: Not All Inclusive
Matthew Does Not Recommend This Product
Brian, the Pressure Washer Expert
Product Expert
If you take a look at the Features for this unit, it will say:
Not Included:
•Thermal relief valve, high pressure discharge fitting,
•Siphon hose, & bypass valve
•Can be purchased separately or as SLPGZH2525A-069

We grayed out the outlet fitting since we knew it wasn't included. We'll be happy to check with the folks at Pressure-Pro to see if they are no longer including the inlet fitting, and update our page.

We will also check and see if the Slap Happy version has been updated. That package has the connectors in it, but you would still have to use the old key.
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James R.
Custer, WA
Purchased from Pressure Washers Direct
Purchased 4/3/16
3 out of 53 out of 53 out of 53 out of 53 out of 5
Seamless Replacement
I bought the GX because the sheave size fit the motor from my own pump. I appreciate that the kit supplied with the pump mounts directly to my Honda engine.

The instructions are vague as to "obvious" things like which way is up (your picture has the oil fill hole on the side ala manual transmissions) vs. the casting lettering suggests oil fill on top. Or does it matter? And where one gets 20W-50 non-detergent synthetic oil since it seems unavailable in my area.

All and... more
James Recommends This Pressure-Pro Product
Brian, the Pressure Washer Expert
Product Expert
The folks at Pressure-Pro sent us the product picture- I'm sorry you found it confusing. Depending on the pressure washer's design pumps can be mounted off the back, on the bottom, to the side- there really isn't a "standard installation".

The Install Guide PDF Download that we post to our web page (under the Specs tab, right hand side of the page) was the best that we could find. Most replacement pumps are sold to repair shops that already know how to install them.

We sell Pump Oil, but you should be able to find it at your local WalMart, Sears or Big Box store. The container will say Pump Oil, and they usually put in a different area than their automotive engine oil.
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Bill C.
Cooper City, FL
Purchased from Pressure Washers Direct
Purchased 12/9/11
4 out of 54 out of 54 out of 54 out of 54 out of 5
Devilbiss Replacement
I purchased this to replace a DeVilbiss. PWD had the best price by far, even after the extras that had to be purchased. The directions on this site are helpful, I didn't read them and had to make several calls to find you need a 316 square axle key, one did not come with the pump and the manual is for the pump itself so no mention of it there either. You'll have to purchase a 12 inlet port as one does not come with the pump and the old one is 38, I put that on tomorrow and I should be ready... more
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