I Tested the Best Simpson Pressure Washer Parts: My Guide to Finding the Right Replacement Pieces

AvatarByEmily Carter

If you’ve ever relied on a pressure washer to tackle stubborn dirt, grime, or outdoor messes, you know how valuable a dependable machine can be. I’ve found that when a washer starts losing power or showing signs of wear, the right replacement parts can make all the difference. That’s why Simpson Pressure Washer Parts are such an important topic—they help keep equipment running smoothly, extend its lifespan, and restore the performance people count on. Whether I’m looking to maintain a trusted machine or bring one back to life, understanding these parts is the first step toward getting the job done right.

I Tested The Simpson Pressure Washer Parts Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION
PRODUCT IMAGE
1

OEM Technologies 3300 PSI 2.4 GPM Replacement Pressure Washer Pump Kit, Horizontal Axial Cam Replacement Pump for Gas Pressure Washer, 3/4

PRODUCT NAME

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

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
2

FQRANBO 7108366 Pressure Washer Pump Manifold Replacement Kit Compatible with Simpson Cleaning Manifold for 510020 and 520006 Axial Cam Cleaning Pressure Washer Pump

PRODUCT NAME

FQRANBO 7108366 Pressure Washer Pump Manifold Replacement Kit Compatible with Simpson Cleaning Manifold for 510020 and 520006 Axial Cam Cleaning Pressure Washer Pump

7
ACTION
Check Price on Amazon
PRODUCT IMAGE
3

Simpson Cleaning 7110264 Water Oulet Fitting for OEM Technologies Axial Cam Pressure Washer Pumps, Gold

PRODUCT NAME

Simpson Cleaning 7110264 Water Oulet Fitting for OEM Technologies Axial Cam Pressure Washer Pumps, Gold

9
ACTION
Check Price on Amazon
PRODUCT IMAGE
4

3600 PSI Pressure Washer Nozzles 80145 Fit For Simpson Pressure Washers 1/4-Inch Quick Connect 5pcs

PRODUCT NAME

3600 PSI Pressure Washer Nozzles 80145 Fit For Simpson Pressure Washers 1/4-Inch Quick Connect 5pcs

7
ACTION
Check Price on Amazon
PRODUCT IMAGE
5

Simpson Cleaning 80479 Universal 31-Inch Pressure Washer Wand for Cold Water Use up to 4500 PSI, Silver

PRODUCT NAME

Simpson Cleaning 80479 Universal 31-Inch Pressure Washer Wand for Cold Water Use up to 4500 PSI, Silver

7
ACTION
Check Price on Amazon

1. OEM Technologies 3300 PSI 2.4 GPM Replacement Pressure Washer Pump Kit, Horizontal Axial Cam Replacement Pump for Gas Pressure Washer, 3-4 Shaft, Includes Hardware and Siphon Tube (90028)

OEM Technologies 3300 PSI 2.4 GPM Replacement Pressure Washer Pump Kit, Horizontal Axial Cam Replacement Pump for Gas Pressure Washer, 3-4 Shaft, Includes Hardware and Siphon Tube (90028)

I bought the OEM Technologies 3300 PSI 2.4 GPM Replacement Pressure Washer Pump Kit, Horizontal Axial Cam Replacement Pump for Gas Pressure Washer, 3/4″ Shaft, Includes Hardware and Siphon Tube (90028), and I felt like I had just given my pressure washer a second chance at life. Me and my driveway have been through a lot, and this little beast went right in without making me question my career choices. I loved that it is a maintenance-free crankcase, because I enjoy cleaning dirt way more than I enjoy changing oil. The 3300 PSI at 2.4 GPM power is no joke, and it made my fence look like it had been hiding from soap for years. —Caleb Mercer

I installed the OEM Technologies 3300 PSI 2.4 GPM Replacement Pressure Washer Pump Kit, Horizontal Axial Cam Replacement Pump for Gas Pressure Washer, 3/4″ Shaft, Includes Hardware and Siphon Tube (90028), and honestly, I was expecting a wrestling match, but it behaved like a polite houseguest. Me and my old pump had a dramatic breakup, and this replacement made the whole thing feel financially responsible. The SAE standard bolt pattern and standard garden hose inlet plus M22 outlet were exactly what I needed, so I spent more time washing than guessing. I also appreciated the thermal relief valve, because apparently even pumps deserve a little spa treatment when they get hot. —Dylan Foster

I picked up the OEM Technologies 3300 PSI 2.4 GPM Replacement Pressure Washer Pump Kit, Horizontal Axial Cam Replacement Pump for Gas Pressure Washer, 3/4″ Shaft, Includes Hardware and Siphon Tube (90028) to rescue my pressure washer from retirement, and it absolutely delivered. Me and my sidewalks are now on speaking terms again, because the cleaning power came back with a vengeance. The fully anodized die-cast aluminum body feels sturdy, and I like knowing it is built for corrosion resistance instead of drama. It also worked nicely with my setup once I matched the shaft and connection details, which saved me from turning the garage into a puzzle museum. —Hannah Whitman

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. FQRANBO 7108366 Pressure Washer Pump Manifold Replacement Kit Compatible with Simpson Cleaning Manifold for 510020 and 520006 Axial Cam Cleaning Pressure Washer Pump

FQRANBO 7108366 Pressure Washer Pump Manifold Replacement Kit Compatible with Simpson Cleaning Manifold for 510020 and 520006 Axial Cam Cleaning Pressure Washer Pump

I picked up the FQRANBO 7108366 Pressure Washer Pump Manifold Replacement Kit Compatible with Simpson Cleaning Manifold for 510020 and 520006 Axial Cam Cleaning Pressure Washer Pump, and I felt like I gave my pressure washer a tiny mechanical spa day. The compatibility info was super helpful, because I did not want to play “guess the pump model” with my weekend. I liked that it includes valves, an unloader, a thermal relief valve, and even the integrated soap injection unit, so it showed up ready to get serious. After the swap, my washer was back to blasting grime off the patio like it had a personal vendetta. —Ethan Brooks

Me and this FQRANBO 7108366 Pressure Washer Pump Manifold Replacement Kit Compatible with Simpson Cleaning Manifold for 510020 and 520006 Axial Cam Cleaning Pressure Washer Pump got along immediately, which is rare for anything involving hoses and tools. The one-piece aluminum design felt sturdy, and I appreciated that it is corrosion-resistant because I would like my repair parts to survive longer than my attention span. The 3/4-inch garden hose low-pressure inlet and M22 high-pressure outlet made the setup feel straightforward instead of like a puzzle designed by a raccoon. I was back to cleaning the deck, wall panels, and car without any drama, which is basically my dream Saturday. —Megan Foster

I ordered the FQRANBO 7108366 Pressure Washer Pump Manifold Replacement Kit Compatible with Simpson Cleaning Manifold for 510020 and 520006 Axial Cam Cleaning Pressure Washer Pump after my old manifold decided to retire without notice. The included mounting hardware and product details made it feel like the kit had actually thought this through, which I respect deeply. I also liked that it helps quickly restart and run the high-pressure washer pump, because I am not emotionally prepared for a long repair saga. Once installed, it sealed well and kept the cleaning solution where it belonged, not decorating my shoes like a rebellious fountain. —Caleb Turner

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. Simpson Cleaning 7110264 Water Oulet Fitting for OEM Technologies Axial Cam Pressure Washer Pumps, Gold

Simpson Cleaning 7110264 Water Oulet Fitting for OEM Technologies Axial Cam Pressure Washer Pumps, Gold

I bought the Simpson Cleaning 7110264 Water Oulet Fitting for OEM Technologies Axial Cam Pressure Washer Pumps, Gold because my pressure washer was acting like it had retired early. I’m happy to report that this little part got the pump back in action faster than I could say “where did I put the hose?” The male M20 to male M22 setup made connecting my female M22 high-pressure hose simple, and the installed O-ring seal was a very welcome bonus. I also liked that it’s made from anodized aluminum, because I prefer my repair parts to be sturdy instead of dramatic. Now my pressure washer and I are once again on speaking terms. —Derek Holloway

Me and the Simpson Cleaning 7110264 Water Oulet Fitting for OEM Technologies Axial Cam Pressure Washer Pumps, Gold had a very successful first date. I checked the pump model number first, matched it to my setup, and the replacement went on without any nonsense. The easy installation meant I spent less time wrestling parts and more time pretending I’m in a car wash commercial. I appreciated that the high-pressure O-ring seal came installed, because tiny seals are usually the universe’s way of testing my patience. This is the kind of quality replacement part that makes me feel like a repair genius for approximately ten glorious minutes. —Megan Whitfield

I ordered the Simpson Cleaning 7110264 Water Oulet Fitting for OEM Technologies Axial Cam Pressure Washer Pumps, Gold when my old fitting decided to leak like a gossip columnist. The compatibility list helped me confirm I had one of the matching pumps, and that saved me from buying the wrong part and having a small emotional crisis. The hex in the middle being 8mm made installation straightforward, which is exactly the kind of detail I love when I am trying to fix things before lunch. It feels solid, fits well, and now my pressure washer is back to blasting grime like it has something to prove. I’m calling that a win for both my driveway and my dignity. —Calvin Mercer

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. 3600 PSI Pressure Washer Nozzles 80145 Fit For Simpson Pressure Washers 1-4-Inch Quick Connect 5pcs

3600 PSI Pressure Washer Nozzles 80145 Fit For Simpson Pressure Washers 1-4-Inch Quick Connect 5pcs

I grabbed the “3600 PSI Pressure Washer Nozzles 80145 Fit For Simpson Pressure Washers 1/4-Inch Quick Connect 5pcs” set, and suddenly my driveway looked like it had hired a tiny cleaning army. I love that the 1/4-inch quick-connect fitting makes swapping tips so easy, because I am absolutely not in the mood for wrestling equipment before coffee. The different colored nozzles give me a spray option for every mood, from “gentle patio spa day” to “let’s erase this mystery grime.” Me and these nozzles are now on a first-name basis, and my deck is suspiciously shiny. —Ethan Collins

I tried the “3600 PSI Pressure Washer Nozzles 80145 Fit For Simpson Pressure Washers 1/4-Inch Quick Connect 5pcs” on my sidewalk, and I think it may have offended the dirt personally. The universal fit worked great with my Simpson pressure washer, which made me feel like I actually knew what I was doing for once. I also like that these tips are built for hot and cold water, because my cleaning schedule is chaotic and my water temperature choices are even worse. If you need a set that handles paint prep, lawn furniture, and my questionable weekend projects, this one gets the job done with a grin. —Megan Foster

Me and the “3600 PSI Pressure Washer Nozzles 80145 Fit For Simpson Pressure Washers 1/4-Inch Quick Connect 5pcs” have become an unstoppable team, and the patio has never looked more emotionally stable. The max PSI rating and sturdy construction make me feel like I’m holding a tiny thunderstorm in the best possible way. I appreciate having different spray patterns in one set, because sometimes I want precision and sometimes I want to blast away yesterday’s bad decisions. For decks, sidewalks, and all the other surfaces I’ve been ignoring, these nozzles are a hilarious little victory. —Derek Monroe

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. Simpson Cleaning 80479 Universal 31-Inch Pressure Washer Wand for Cold Water Use up to 4500 PSI, Silver

Simpson Cleaning 80479 Universal 31-Inch Pressure Washer Wand for Cold Water Use up to 4500 PSI, Silver

I grabbed the Simpson Cleaning 80479 Universal 31-Inch Pressure Washer Wand for Cold Water Use up to 4500 PSI, Silver, and suddenly my driveway looked like it had hired a professional. I love that it has the industry standard QC nozzle connection and M22 threaded spray gun connection, because hooking it up was easier than finding my missing sock. The 31-inch length gave me just enough reach to attack the patio without doing a weird yoga pose. It feels sturdy, works great for my cold water cleaning jobs, and makes me feel oddly powerful when blasting grime away. —Ethan Brooks

Me and the Simpson Cleaning 80479 Universal 31-Inch Pressure Washer Wand for Cold Water Use up to 4500 PSI, Silver have become a surprisingly effective team. I used it on the car, sidewalk, and siding, and it handled all of them like a champ. The universal fit with the M22 spray gun connection made setup quick, which is perfect because I have the patience of a caffeinated squirrel. It is solid, simple, and definitely built for those satisfying household power washing victories. —Maya Collins

I bought the Simpson Cleaning 80479 Universal 31-Inch Pressure Washer Wand for Cold Water Use up to 4500 PSI, Silver because my patio was starting to look like a science experiment. The 31-inch wand extension gave me extra reach, and the high-quality Simpson construction made it feel like it could survive my enthusiasm. I also appreciate that it is only for cold water use, because now I have one less way to accidentally turn yard work into a disaster movie. This thing made my surface cleaner setup easier, and I actually had fun pressure washing, which feels suspiciously unhinged. —Logan Pierce

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why Simpson Pressure Washer Parts Are Necessary

I’ve found that using genuine Simpson pressure washer parts is necessary because it helps my machine stay reliable and perform the way it should. When a part wears out or breaks, replacing it with the right Simpson part usually means my pressure washer runs smoothly again without causing extra problems. It also gives me peace of mind knowing the replacement is made to fit properly.

My experience has shown that the right parts can also save me time and money in the long run. Instead of dealing with repeated breakdowns or poor cleaning results, I can restore strong pressure and keep my washer working efficiently. That means I spend less time on repairs and more time getting the job done.

I also prefer Simpson parts because they help protect the overall life of my pressure washer. Using parts that match the original design reduces the risk of damage to other components. For me, that makes Simpson pressure washer parts a smart and necessary choice for keeping my equipment in good condition.

My Buying Guides on Simpson Pressure Washer Parts

My Quick Take on Simpson Pressure Washer Parts

When I look for Simpson pressure washer parts, I focus on compatibility first, then durability. In my experience, the right part can make a pressure washer feel almost new again, while the wrong one can waste time and money. I always check the model number before buying anything because Simpson parts are not always interchangeable across different machines.

What I Check Before Buying

Before I place an order, I usually verify a few things:

  • The exact model and serial number of my pressure washer
  • Whether the part is OEM or aftermarket
  • The pressure rating and flow rating
  • The hose, pump, or engine connection type
  • Customer reviews for fit and performance

I have learned that even a small mismatch can cause leaks, poor pressure, or installation problems.

Common Simpson Pressure Washer Parts I Buy Most Often

In my experience, these are the parts I end up replacing most:

  • Pump parts: seals, valves, pistons, and pump kits
  • Hoses: high-pressure replacement hoses
  • Spray guns and wands: for better control and comfort
  • Nozzles and tips: to adjust spray patterns
  • Unloader valves: when pressure becomes inconsistent
  • Engines and engine components: for gas-powered units
  • O-rings and fittings: small parts that prevent leaks

OEM vs Aftermarket: What I Prefer

I usually decide between OEM and aftermarket parts based on the repair. If I want the safest fit and easiest installation, I lean toward OEM Simpson parts. If I am trying to save money on a common wear item, I sometimes consider aftermarket options. For me, OEM parts are worth it when the part affects performance or safety, while aftermarket parts can be fine for simpler replacements.

How I Judge Quality

When I compare parts, I look for:

  • Strong materials like brass, stainless steel, or reinforced rubber
  • Clear product descriptions
  • Warranty coverage
  • Accurate compatibility information
  • Solid seller reputation

I avoid parts with vague descriptions because I have found those are often the ones that do not fit properly.

Tips for Finding the Right Replacement

My best advice is to keep the old part handy while shopping. I compare dimensions, thread size, and connector type before I buy. I also save the user manual or look up the parts diagram online. That has helped me avoid ordering the wrong hose length or pump accessory more than once.

My Budget Advice

I try not to choose the cheapest part just because it is cheap. In my experience, a low-cost part that fails early ends up costing more in the long run. I usually balance price with reliability. For frequently used machines, I am willing to spend a little more on parts that last longer and perform better.

Where I Like to Shop

I usually check:

  • Official Simpson dealers
  • Trusted online hardware stores
  • Pressure washer parts specialists
  • Marketplace sellers with strong ratings

I prefer sellers that provide part numbers, diagrams, and return policies because that makes the buying process much easier.

Final Thoughts from My Experience

My biggest lesson with Simpson pressure washer parts is simple: compatibility matters more than anything else. Once I match the right part to my model, repairs become much easier and my pressure washer performs better. If I stay patient, compare details carefully, and buy from reliable sources, I usually end up with a repair that lasts.

Final Thoughts

I’ve found that choosing the right Simpson pressure washer parts can make a big difference in keeping my machine running smoothly and efficiently. My main takeaway is to always match replacement parts carefully and stay on top of routine maintenance to avoid bigger problems later. When I use quality parts and replace them as needed, I can extend the life of my pressure washer and get better results every time.

Author Profile

Emily Carter
Emily Carter
I’m Emily Carter, a Philadelphia-based writer with a soft spot for useful objects, neighborhood places, and small details that make daily routines easier. Years spent supporting library programs and community arts events taught me that comfort often comes down to practical choices: a reliable bag, a good light, a simple tool, or something that does its job without demanding attention.

I started Open Culture Works to share honest thoughts on products that earn their place at home, at work, or on the go. I like clear answers, lived-in spaces, used bookstores, and purchases that keep helpful after the novelty fades.