--- product_id: 17556295 title: "OEM Technologies 3400 PSI 2.5 GPM Horizontal Pressure Washer Pump Kit 90029" brand: "simpson" price: "3536 kr" currency: NOK in_stock: true reviews_count: 13 url: https://www.desertcart.no/products/17556295-oem-technologies-3400-psi-2-5-gpm-horizontal-pressure-washer store_origin: NO region: Norway --- # 2.5 GPM flow rate 3400 PSI max pressure SAE bolt pattern for easy install OEM Technologies 3400 PSI 2.5 GPM Horizontal Pressure Washer Pump Kit 90029 **Brand:** simpson **Price:** 3536 kr **Availability:** ✅ In Stock ## Summary > 🚿 Upgrade your power wash game—clean smarter, not harder! ## Quick Answers - **What is this?** OEM Technologies 3400 PSI 2.5 GPM Horizontal Pressure Washer Pump Kit 90029 by simpson - **How much does it cost?** 3536 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/17556295-oem-technologies-3400-psi-2-5-gpm-horizontal-pressure-washer) ## Best For - simpson enthusiasts ## Why This Product - Trusted simpson brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Durable anodized aluminum body with stainless steel pistons ensures corrosion resistance and extended seal life. - • **Effortless Installation:** Standard SAE bolt pattern and included hardware make replacement a breeze—no adjustments needed. - • **Smart Thermal Protection:** Integrated Thermal Relief Valve prevents overheating, keeping your pump safe during heavy-duty use. - • **Maintenance-Free Operation:** Oil-free crankcase design means zero upkeep—focus on cleaning, not maintenance. - • **Powerful Cleaning Performance:** Delivers up to 3400 PSI and 2.5 GPM for professional-grade results every time. ## Overview The OEM Technologies 3400 PSI 2.5 GPM Horizontal Pressure Washer Pump Kit (model 90029) is a robust, maintenance-free replacement pump designed for gas-powered pressure washers with horizontal engines and 3/4" shafts. Featuring a durable anodized aluminum build, stainless steel pistons, and a thermal relief valve, it delivers professional-level cleaning power with easy installation and broad compatibility, making it the go-to upgrade for homeowners and pros seeking reliable, high-performance pressure washing. ## Description Designed for performance, the OEM Technologies Axial Cam Pump (90029) is highly efficient and minimizes engine load. Delivering up to 3400 PSI at 2.5 GPM, this replacement is a smart fit for many gas powered pressure washer setups that use a horizontal engine and a 3/4" diameter shaft (Check your pressure washer’s inlet and outlet orientation to ensure compatibility). The replacement pump kit refreshes tired machines and helps you avoid replacing an entire unit. The power washer pump has stainless steel pistons for improved seal life and features a stainless steel integrated unloader with our easy-start system. Installation is straightforward thanks to the SAE bolt pattern, garden-hose inlet, and M22 high-pressure outlet, and the kit includes a siphon tube with filter, mounting bolts, shaft key, and instructions. Thermal relief protection keeps the pump from overheating. Pump is maintenance free and never needs oil. Built with robust metal components, the 90029 is a dependable power washer pump replacement for homeowners and pros using SIMPSON pressure washer parts and other common pressure washer pumps. It is great for walls, fences, sidewalks, vehicles, and more. Rely on OEM Technologies for a powerful replacement for your Simpson pressure washer pump. Simpson power washers and Simpson power washer parts are built for DIYers and professionals alike to tackle any cleaning job. ## Features - REPLACEMENT POWER WASHER PUMP: Replace your SIMPSON pressure washer pump with the OEM Technologies Axial Cam Power Washer Pump to restore cleaning power; Get up to 3400 PSI at 2.5 GPM; Fits horizontal engines with 3/4" shaft like the Honda GX190 or GX200 - EASY INSTALLATION: SAE standard bolt pattern fits many gas pressure washers with horizontal engines; To ensure compatibility, be sure to match engine orientation, PSI, GPM, engine shaft diameter, and current pump inlet and outlet connection - BROAD COMPATIBILITY: This power washer pump replacement features a garden hose inlet and threaded M22 connection high pressure outlet; Fits many pressure washer attachments, including Simpson MorFlex hoses 40224, 40225, 40226 and Santoprene hose 41182 - DURABLE AND MAINTENANCE-FREE: This pump features a maintenance-free crankcase so you never have to change the oil; It is manufactured from fully anodized die-cast aluminum for protection against corrosion; Stainless steel pistons improve seal life - THERMAL RELIEF: A Thermal Relief Valve (TRV) protects the pump from overheating while in bypass mode; The TRV releases small amounts of hot water and intakes cooler water to prevent overheating; Stainless steel integrated supports our easy-start system ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B00TQLMNNQ | | Best Sellers Rank | #7,457 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #3 in Pressure Washer Pumps | | Brand Name | SIMPSON | | Color | Gray | | Customer Reviews | 4.4 4.4 out of 5 stars (1,639) 4.4 out of 5 stars | | Flow Rate | 2.5 gpm | | Global Trade Identification Number | 00879399001499 | | Included Components | OEM Technologies Horizontal Axial Cam Pump Kit | | Item Dimensions L X W X H | 8.5"L x 8.5"W x 8"H | | Item Highlight | Horizontal Axial Cam Replacement Pressure Washer Pump Kit, Gas Pressure Washers, 3/4" Shaft, Includes Hardware & Siphon Tube | | Item Type Name | 2.5 GPM Replacement Pressure Washer Pump Kit for SIMPSON Gas Power Washer Pumps, 3/4" Shaft, Horizontal Engine Fit (90037) | | Item Weight | 7 pounds | | Manufacturer | simpson | | Manufacturer Part Number | 90029 | | Manufacturer Warranty Description | 2 year warranty | | Material Type | Aluminum | | Maximum Lifting Height | 22 meters | | Model Number | 90029 | | Number Of Items | 1 | | Power Source | Gas Powered | | Product Style | Horizontal 3400 PSI | | Specific Uses For Product | pressure washing | | Unit Count | 1 Count | | Upc | 879399001499 | ## Product Details - **Brand:** SIMPSON - **Color:** Gray - **Global Trade Identification Number:** 00879399001499 - **Item Weight:** 7 pounds - **Material:** Aluminum - **Maximum Flow Rate:** 2.5 gpm - **Maximum Lifting Height:** 22 meters - **Power Source:** Gas Powered - **Product Dimensions:** 8.5"L x 8.5"W x 8"H - **Style:** Horizontal 3400 PSI ## Images ![OEM Technologies 3400 PSI 2.5 GPM Horizontal Pressure Washer Pump Kit 90029 - Image 1](https://m.media-amazon.com/images/I/61miewwJVoL.jpg) ![OEM Technologies 3400 PSI 2.5 GPM Horizontal Pressure Washer Pump Kit 90029 - Image 2](https://m.media-amazon.com/images/I/71AaWo92sTL.jpg) ![OEM Technologies 3400 PSI 2.5 GPM Horizontal Pressure Washer Pump Kit 90029 - Image 3](https://m.media-amazon.com/images/I/71VwbXvgXkL.jpg) ![OEM Technologies 3400 PSI 2.5 GPM Horizontal Pressure Washer Pump Kit 90029 - Image 4](https://m.media-amazon.com/images/I/61ZFxUJraeL.jpg) ![OEM Technologies 3400 PSI 2.5 GPM Horizontal Pressure Washer Pump Kit 90029 - Image 5](https://m.media-amazon.com/images/I/71s9x3UwRtL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fit perfectly *by on Reviewed in the United States July 22, 2026* This worked perfectly on my pressure washer. Honda GC 190 motor on a simpson frame. All parts included.Super easy install. ### ⭐⭐⭐⭐⭐ Wow, it fixed everything. *by on Reviewed in the United States September 29, 2026* I am overwhelmed, this actually fix my almost new $900 pressure cleaner. The first owner got very frustrated and offhandedly, offered it to me for $130. It’s as new as can be, but the key that aligned the drive shaft on the motor to the pump wore down on the pump side. I took out 4 bolts and put the new pump on with a new key and what do you know. I have a brand new $900 pressure washer for $130 plus the $100 for the pump. How much happier could I be. ### ⭐⭐⭐⭐⭐ Easily installed replacement for Simpson pressure washer OEM pump with very low pressure *by on Reviewed in the United States September 5, 2020* My Simpson pressure washer (3100 PSI, 2.5 GPM) has served me well over a number of years, but its water pressure had dropped to the point that made cleaning my driveway very difficult. After reviewing some Youtube videos, I saw that the pump could be replaced. This unit is an exact OEM replacment for my unit, and the new pump restored the original capability to clean. Some time after I originally purchased the washer, I bought a surface cleaner, but I could not get it to clean concrete surfaces with mold, mildew, stains, etc. After I replaced the pump, the surface cleaner works well, and this attachment really speeds up cleaning my driveway. The pump is fastened to the gasoline engine with four allen key metric bolts that were somewhat stuck, but a little leverage on the allen key loosened them. The rest of the replacement was easy. Note that there is an alternative, less expensive approach to pump replacement: Ebay sellers provide new seal and valve kits to allow rebuilding the original pump, but I didn't realize this until after I had replaced my pump. When I disassembled my pump to see why it failed, I found that the water seals were worn and the valves had worn out; so a seal kit + a valve kit for a total of about $60 would likely have restored the original pump. ## Frequently Bought Together - OEM Technologies 90029 Replacement Pressure Washer Pump Kit, 3400 PSI, 2.5 GPM, 3/4" Shaft, Includes Hardware and Siphon Tube, for Residential and Industrial Gas Powered Machines - STA-BIL Pump Protector - Protects Pressure Washer Pumps and Other Internal Components During Storage, Next Gen Anti-Freeze and Lubricant Formula, 4oz (22007) , Red - Valley Industries Pressure Washer Premium Pump Oil - 1 Liter, Black, (PK-85490000) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.no/products/17556295-oem-technologies-3400-psi-2-5-gpm-horizontal-pressure-washer](https://www.desertcart.no/products/17556295-oem-technologies-3400-psi-2-5-gpm-horizontal-pressure-washer) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-10-26*