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🚀 Upgrade your clean game with power and precision!
The AAA 3200 PSI 2.8 GPM Horizontal Replacement Pressure Washer Pump Kit (model 90036) is a robust, easy-to-install pump designed for gas-powered pressure washers with horizontal engines and a 3/4" shaft. Featuring PowerBoost Technology for adjustable pressure, a clear oil sight glass for maintenance, and durable stainless steel construction with oversized bearings, it delivers professional-grade cleaning performance while extending your machine’s lifespan. Compatible with standard SAE bolt patterns and common hose connections, this pump offers a cost-effective, high-performance upgrade backed by a 5-year warranty.

















| ASIN | B00TQLMNLI |
| Best Sellers Rank | #64,576 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,369 in Pressure Washer Accessories |
| Brand | SIMPSON |
| Brand Name | SIMPSON |
| Color | Black |
| Customer Reviews | 4.4 out of 5 stars 249 Reviews |
| Flow Rate | 2.8 gpm |
| Global Trade Identification Number | 00879399002069 |
| Included Components | Pump |
| Item Dimensions L x W x H | 12"L x 9"W x 4"H |
| Item Highlight | Industrial Grade Horizontal Triplex Plunger Replacement Pressure Washer Pump Kit, 3/4" Shaft, Includes Hardware & Siphon Tube |
| Item Type Name | Replacement Pressure Washer Pump Kit, 3200 PSI, 2.8 GPM, 3/4" Shaft, Includes Hardware and Siphon Tube, for Industrial Gas Powered Machines |
| Item Weight | 9 pounds |
| Manufacturer | Simpson Cleaning |
| Manufacturer Part Number | 90030 |
| Manufacturer Warranty Description | 5 year warranty |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Maximum Lifting Height | 22 meters |
| Model Number | 90036 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Source | Gas Powered |
| Product Dimensions | 12"L x 9"W x 4"H |
| Product Style | PowerBoost Technology |
| Specific Uses For Product | Pressure Washing, Replacement Part |
| Style | PowerBoost Technology |
| UPC | 879399002069 |
| Unit Count | 1 Count |
| Voltage | 120 |
R**H
Exact fit and easy peasy
It was nearly six months after I purchased this before I got around to changing it out. My Simpson Power Washer was new and I had used it only one time in fall. I tried to clear out the water in the pump when I was done and put it away, but I did not use the antifreeze kit that is small pressure can and that cost me the pump. The next time I went to use it, the winter cold had frozen remaining water in the pump and that made it totally ineffective and lost all pressure. I was pleased to find this and ordered it. The repair shop wanted close to $250 to examine the unit and I had to drive an hour just to drop it off so this replacement part was a much more desireable option. I didn't know what to expect until I replaced it. It took me less than 10 minutes to put the new pump on. Four bolts and the original slid off the keyed shaft, I then slid the new pump on the shaft with attention to aligning it to the key and tightened up the bolts and done! Totally repaired and very happy with this part and ease of repair.
D**E
The pump will fail with out water.
I purchased this to replace the original pump on my Simpson pressure washer which was almost new. The pump works great and is the same as on the original pressure washer. I would caution that the pump works great as long as the water is turned on. The pump is of a very good quality but has plastic valves - if the water stops the pump heats up very quickly and the plastic valves just melt and the pump no longer functions. This was my experience - the water stopped and the valves melted. I purchased the entire pump since just the valve portion was not available.
R**7
It works
I bought this to replace a AAA Pressure Washer Pump 8.7GA12 that came on my Simpson Aluminum ALH3225 Pressure washer. Install was super easy, four bolts off, four bolts back on. Works fine. I hope Simpson is reading as my original pump was/is still under warrantee and I was approved for a replacement back in October of 2020, it is June of 2021 and it is still not in. No amount of calling customer service helps because , well, it's not there fault or problem. All warrantee is handled by a third party. Remember that the next time you want to buy anything made by Simpson.
J**Y
👍🏻
Great, fit as it should.
M**H
Direct replacement
Mounted right up and worked fantastic. Pressure was slightly higher than the original. Nice replacement part.
P**R
OEM Replacement Pump
After lots of research, I bought/installed this pump, which is a perfect OEM replacement for the original AAA pump on my Simpson pressure washer. It bolted up to the engine without any problems. The three-star rating for longevity is based on my research that revealed that this pump is not worth rebuilding. One upgrade: this pump includes an adjustable pressure regulator that was not adjustable on the original.
L**R
Works well. Replaced an axial pump
This unit replaced a Karcher axial piston pump on a GC190 engine. Used it for a couple of hours. Works well and delivers good flow. Pump arrived well packaged and full of oil. Pump is made in China.
U**N
Horrible customer service
I bought this to replace a pump that would not allow water to flow through my pressure washer pump when connected to a water source prior to starting the engine. My old unit was in storage for about a year or so. This pump arrived in bomb proof packaging and I had high hopes that it would suit my needs. It did not, so I called the customer service number included with the pump to figure out what could be the issue. As I told the customer service rep from AAA when she informed me that she had no way of knowing what shape my new pump was in when I received it as I didn’t buy it from them directly, “ this could have been delivered to me by dropping it out of an airplane and it would have been just fine”. Unfortunately, it had the exact same issue as my old unit ; when connected to the hose, prior to starting the pressure washer, no water would flow through the pump. So I called the customer service number included with the replacement pump to find out if there was any possibilities that I was some how doing something wrong. The rep asked me if I had installed the pump already. My reply was that I couldn’t know it was defective unless I installed it. She told me that immediately voided the warranty! ??? I explained that I was only looking for technical info as to why a brand new pump would fail in the same manner as the old seized pump, again thinking the problem would some how be something I was doing in error. The rep refused to offer any suggestions other than to pay out of pocket at one of their service centers as I had voided the warranty by actually installing it myself. Why sell to the public if they can’t do the install? Never found out what the issue was with the new pump as I was able to fix the old one with a few careful taps from a hammer. Thank goodness for amazons generous return policy as this is not a cheap item.
G**Z
Perfect
Perfect
G**.
Très performant merci
Va surpaire bien
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