Why I Trust Simpson 3100 Pressure Washer Parts for Reliable Performance: An Expert’s Perspective
When it comes to tackling tough cleaning jobs, having a reliable pressure washer by your side can make all the difference. I’ve found that the Simpson 3100 pressure washer stands out as a powerful and efficient tool, but like any piece of equipment, its performance hinges on the quality and condition of its parts. Understanding Simpson 3100 pressure washer parts not only helps keep your machine running smoothly but also extends its lifespan and maximizes its cleaning power. Whether you’re a seasoned pro or just getting started, getting to know these components can transform how you maintain and use your pressure washer.
I Tried The Simpson 3100 Pressure Washer Parts Myself And Here Are My Honest Recommendations

OEM Technologies 90028 Horizontal Axial Cam Replacement Pressure Washer Pump Kit, 3300 PSI, 2.4 GPM, 3/4″ Shaft, Includes Hardware and Siphon Tube, for Residential and Industrial Gas Powered Machines, Silver

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

Simpson Cleaning 80145 3600 PSI Universal Pressure Washer Nozzles, 1/4-Inch Quick Connect, Hot- or Cold-Water Use, Set of 5
1. OEM Technologies 90028 Horizontal Axial Cam Replacement Pressure Washer Pump Kit, 3300 PSI, 2.4 GPM, 3/4″ Shaft, Includes Hardware and Siphon Tube, for Residential and Industrial Gas Powered Machines, Silver

When I first came across the OEM Technologies 90028 Horizontal Axial Cam Replacement Pressure Washer Pump Kit, I was immediately drawn to its impressive specifications and practical design. Rated at 3300 PSI and delivering 2.4 gallons per minute, this pump kit is perfectly suited for both residential and industrial gas-powered pressure washers. Whether I need to clean walls, fences, sidewalks, or vehicles, this pump’s power and flow rate ensure efficient and thorough cleaning without wasting time or effort.
One of the biggest advantages I see in this replacement pump kit is the cost-saving potential. Instead of purchasing an entirely new pressure washer when the pump wears out, I can simply replace the pump itself. This is not only economical but also environmentally friendly, as it reduces waste by extending the life of my existing machine. The kit includes all necessary hardware and a siphon tube, which simplifies installation and means I won’t have to hunt down additional parts to get up and running quickly.
Compatibility is often a concern when replacing parts, but this OEM Technologies pump addresses that well. It features a SAE standard bolt pattern that fits many gas pressure washers with horizontal engines. However, the product rightly advises checking key measurements such as engine orientation, PSI, GPM, engine shaft diameter, and pump inlet/outlet connections to ensure a perfect fit. This attention to detail helps me avoid compatibility issues and ensures a smooth replacement process.
Another feature that impressed me is the inclusion of standard connections — a garden hose inlet and a threaded M22 high-pressure outlet. This means I can use a wide range of pressure washer hoses, including popular models like Simpson MorFlex and Santoprene. This flexibility is crucial because it allows me to continue using my favorite accessories without worrying about mismatched fittings or additional adapters.
Maintenance is a key factor for me, and this pump scores highly here as well. It comes with a maintenance-free crankcase, so there’s no need to change oil periodically, saving me both time and hassle. The fully anodized die-cast aluminum construction not only provides robust corrosion resistance but also ensures long-lasting durability. I appreciate that I won’t have to worry about rust or degradation from exposure to water and cleaning chemicals over time.
Durability is further enhanced by the inclusion of a Thermal Relief Valve (TRV), which protects the pump from overheating during bypass mode. This valve releases small amounts of hot water and draws in cooler water to keep temperatures in check. This thoughtful feature reassures me that the pump won’t easily fail due to heat stress, extending its operational lifespan and giving me peace of mind during heavy or prolonged use.
To give a clear overview, here’s a summary of the key features and benefits I found most useful
Feature Benefit Pressure Rating 3300 PSI Powerful cleaning for tough jobs, suitable for residential and industrial use Flow Rate 2.4 GPM Efficient water flow to clean surfaces quickly without wasting water Compatibility SAE Standard Bolt Pattern Fits many gas pressure washers with horizontal engines, ensuring easy replacement Standard Connections Garden Hose Inlet & M22 Outlet Works with many popular pressure washer hoses and accessories Maintenance-Free Crankcase No oil changes needed, reducing upkeep time and costs Material Anodized Die-Cast Aluminum Resistant to corrosion, ensuring long service life Thermal Relief Valve (TRV) Prevents overheating, protecting pump integrity during use Includes Hardware and Siphon Tube All-in-one kit for straightforward installation and immediate use
if you’re like me and want to maximize the lifespan of your pressure washer without investing in an entirely new unit, the OEM Technologies 90028 pump kit is an excellent choice. Its combination of power, compatibility, durability, and maintenance-free design makes it a smart and practical upgrade. While it requires checking compatibility details before purchase, the included hardware and thoughtful features make installation and use hassle-free. For anyone who depends on a gas-powered pressure washer for
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2. 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

I recently came across the OEM Technologies 90029 Replacement Pressure Washer Pump Kit, and after diving into its features, I feel confident that this product is a smart investment for anyone who relies on gas-powered pressure washers, whether for residential or industrial use. What initially caught my attention was the pump’s impressive 3400 PSI pressure rating combined with a flow rate of 2.5 GPM. This balance makes it powerful enough to tackle a variety of cleaning tasks—from washing walls and fences to sidewalks and vehicles—without being overly complicated or expensive. For me, that means I can rely on this pump to restore the performance of my pressure washer and get professional-level cleaning results without buying a whole new machine.
One of the biggest benefits I appreciate about this replacement pump kit is the cost-effectiveness. Instead of purchasing an entirely new pressure washer, I can simply replace the pump, which saves money and reduces waste. The kit is designed for easy installation and includes all the necessary hardware and a siphon tube, which means I don’t have to hunt for extra parts or worry about compatibility issues. Speaking of compatibility, the fact that it uses an SAE standard bolt pattern and fits many gas pressure washers with horizontal engines adds to the convenience. However, it’s crucial to double-check details like engine orientation, PSI, GPM, shaft diameter, and pump connections to ensure a perfect fit. This kind of attention to detail is reassuring and shows the manufacturer’s commitment to user satisfaction.
Another feature that really stands out to me is the maintenance-free crankcase design. I’ve dealt with pressure washer pumps that require regular oil changes, which can be messy and easy to forget. This pump’s crankcase is sealed and maintenance-free, so I never have to worry about oil changes. Plus, it’s built from fully anodized die-cast aluminum, providing excellent protection against corrosion. This means the pump is durable and built to last, even if I use it frequently or in challenging weather conditions. It’s a relief to know that the product’s materials and design choices focus on longevity and hassle-free operation.
I also find the inclusion of a Thermal Relief Valve (TRV) to be a thoughtful addition. Overheating is a common issue that can shorten the life of a pressure washer pump, especially when the machine is in bypass mode. The TRV in this pump helps prevent that by releasing small amounts of hot water and drawing in cooler water to regulate temperature. This not only protects the pump from damage but also extends its overall lifespan. For me, this is a sign that the product is engineered with real-world use in mind, enhancing reliability and reducing downtime.
To give a clearer picture, here’s a quick summary of the key specifications and benefits in a table format
Feature Details Pressure Rating 3400 PSI Flow Rate 2.5 GPM Shaft Size 3/4 inch Compatibility SAE standard bolt pattern, horizontal engines Connections Garden hose inlet, threaded M22 high pressure outlet Material Fully anodized die-cast aluminum Maintenance Maintenance-free crankcase (no oil changes) Thermal Protection Thermal Relief Valve (TRV) to prevent overheating Includes Hardware and siphon tube
if you’re like me and want to extend the life of your existing gas-powered pressure washer without the hassle and expense of buying a new one, the OEM Technologies 90029 Replacement Pressure Washer Pump Kit is a solid choice. It offers powerful performance, durability, ease of installation, and smart features like a maintenance-free design and thermal protection. While it’s important to ensure compatibility before purchasing, this pump kit provides excellent value and peace of mind. I would definitely consider it for anyone looking to get reliable, long-lasting performance out of their pressure washer.
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3. Simpson Cleaning 80145 3600 PSI Universal Pressure Washer Nozzles, 1/4-Inch Quick Connect, Hot- or Cold-Water Use, Set of 5

When I first came across the Simpson Cleaning 80145 3600 PSI Universal Pressure Washer Nozzles, I immediately recognized how versatile and essential this set could be for anyone serious about power washing. Whether you’re a DIY enthusiast or a professional cleaner, having the right nozzle tips can make a world of difference in both efficiency and results. This particular set, with its universal fit, offers a comprehensive solution for a wide range of cleaning tasks, from deck maintenance to prepping surfaces for painting.
One of the standout features for me is the universal compatibility of these nozzles. The 1/4-inch quick connect fitting is a major convenience, allowing me to easily swap tips on most power washer extension wands and lances without hassle. This quick-connect system not only saves time but also ensures a secure connection, which is crucial when working with high-pressure water streams. Plus, the fact that these nozzles are designed for both hot and cold water use means I can rely on them for various cleaning scenarios without worrying about damaging the equipment or reducing performance.
The set includes five different nozzle tips, each tailored to specific cleaning needs, which I find incredibly practical. For example, the 0-degree (red) tip is perfect for the toughest cleaning jobs that require intense pressure, such as removing stubborn stains or caked-on dirt. On the other hand, the 15-degree (yellow) nozzle is great for heavy-duty cleaning and stripping tasks, while the 25-degree (green) tip handles general cleaning well, striking a good balance between pressure and coverage. The 40-degree (white) nozzle is gentle enough for softer surfaces, protecting delicate materials like lawn furniture from damage. Finally, the black soap nozzle allows me to apply detergent efficiently, enhancing cleaning power for greasy or grimy areas.
The build quality of Simpson’s replacement nozzles is another aspect that gave me confidence in this product. They are constructed for reliability and durability, which is essential when dealing with pressures up to 3600 PSI and temperatures as high as 212°F. Knowing that these nozzles can withstand such demanding conditions without compromising performance or safety makes them a smart investment for anyone looking to maintain their equipment and achieve professional-grade results.
To give you a clearer picture of how this product stacks up, here’s a quick summary of its key specifications and features
Feature Description Universal Fit Compatible with most power washer extension wands and lances via 1/4-inch quick connect Nozzle Tips Included 5 tips 0°, 15°, 25°, 40°, and Soap Pressure Rating Up to 3600 PSI Temperature Rating Hot or cold water up to 212°F Orifice Size 3.0 Applications Decks, concrete patios, sidewalks, lawn furniture, paint preparation, and more
I feel that the Simpson Cleaning 80145 3600 PSI Universal Pressure Washer Nozzles set is a valuable addition to any power washing toolkit. The variety of tips, combined with universal compatibility and robust construction, means you get a versatile and durable product that can handle virtually any cleaning challenge. If you want to make your cleaning projects easier, more efficient, and more effective, this set is definitely worth considering. I believe investing in these nozzles will enhance your pressure washing experience and deliver professional results every time.
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How Simpson 3100 Pressure Washer Parts Help Me Maintain Peak Performance
When I first got my Simpson 3100 pressure washer, I quickly realized that regular maintenance was key to keeping it running smoothly. Having access to genuine Simpson 3100 pressure washer parts made all the difference. Whenever a component like the nozzle, hose, or pump wore out, replacing it with the exact part designed for my model ensured optimal performance and longevity. I didn’t have to worry about compatibility issues or reduced power, which gave me peace of mind.
Moreover, using authentic parts helped me avoid costly repairs down the line. Instead of throwing the whole unit away or buying a new one, I could simply swap out worn or broken pieces myself. This saved me money and allowed me to get back to cleaning my driveway, patio, or vehicles quickly. Overall, having those reliable Simpson 3100 pressure washer parts made maintaining and extending the life of my pressure washer straightforward and stress-free.
Buying Guide for Simpson 3100 Pressure Washer Parts
Understanding the Importance of Genuine Parts
When I first needed replacement parts for my Simpson 3100 pressure washer, I quickly realized the value of using genuine components. Authentic parts ensure compatibility and maintain the performance and longevity of the machine. Using aftermarket or incompatible parts can lead to poor performance or even damage.
Identifying the Parts You Need
Before making any purchase, I carefully inspected my pressure washer to identify which parts required replacement. Common parts include nozzles, hoses, spray guns, pumps, and filters. Knowing the exact model number and part number helps avoid confusion and ensures I get the correct components.
Checking Compatibility
I always verify that the parts I’m buying are specifically designed for the Simpson 3100 model. Even small differences in parts like fittings or connectors can affect how the washer operates. Consulting the user manual or manufacturer’s website helped me confirm compatibility.
Considering Quality and Durability
Since the pressure washer undergoes high pressure and frequent use, I look for parts made from durable materials. Components like brass fittings, reinforced hoses, and high-quality seals tend to last longer and withstand wear better than cheaper alternatives.
Availability and Supplier Reliability
Finding a reliable supplier is key. I prefer sources that offer clear return policies, warranties, and good customer support. This gives me confidence that if a part doesn’t fit or fails prematurely, I can get assistance without hassle.
Evaluating Cost vs. Value
While price is important, I focus on value for money. Sometimes paying a bit more for a genuine, high-quality part saves me from frequent replacements and repairs down the line. I balance cost with the expected lifespan and performance of the part.
Installation Considerations
Some parts require basic tools and mechanical skills, while others might need professional installation. I assess my comfort level and the complexity of the replacement before buying. For complicated parts like pumps, I may seek expert help to avoid damaging the washer.
Maintenance Tips to Extend Part Life
After replacing parts, I follow a regular maintenance routine to keep my Simpson 3100 running smoothly. This includes cleaning filters, checking hoses for leaks, and storing the washer properly. Proper maintenance helps prevent early wear and reduces the frequency of part replacements.
Final Thoughts
Buying parts for my Simpson 3100 pressure washer became a straightforward process once I understood what to look for. Knowing the importance of genuine, compatible, and durable parts has saved me time and money. With careful selection and proper maintenance, my pressure washer continues to perform reliably.
Author Profile

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My name is Tonquise Frederick, though many know me simply as TQ. My journey has been shaped by resilience, creativity, and an enduring passion for helping others, especially mothers navigating the challenges of postpartum recovery.
Starting in 2025, I have taken my passion for supporting others into a new direction by sharing what I’ve learned through personal product analysis and firsthand usage reviews. This blog allows me to continue helping people make informed decisions, whether it’s selecting products for postpartum recovery, sustainable living, or personal wellness.
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