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⚡ Restore power, precision, and performance — don’t let your pressure washer fall behind!
The Simpson Cleaning 7108366 Manifold Replacement Kit is a premium OEM replacement designed for axial cam pressure washer pumps 510020 and 520006. This comprehensive kit includes all essential components—valves, seals, unloader, thermal relief valve, integrated soap injector, and hardware—ensuring a durable, efficient, and easy-to-install solution for both residential and commercial pressure washers. Engineered to restore your machine’s peak performance quickly, it’s the trusted choice for professionals and enthusiasts aiming to maintain powerful, reliable cleaning equipment.











| Best Sellers Rank | #82,350 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #947 in Pressure Washer Accessories |
| Customer Reviews | 4.5 out of 5 stars 425 Reviews |
G**G
Water manifold
Fit perfectly and very easy to switch out
D**S
GREAT PRODUCT
WORKED PERFECT
J**E
Parts fit perfectly
100% satisfied
B**S
Worked perfect EXCEPT bolts
Fit perfectly but had to use the original bolts. These bolts snapped off from the vibration. With original bolts worked great!
S**.
Plug & Play
Installation was quick and hassle-free thanks to the simple 3-bolt, plug-and-play design. Everything fit perfectly right out of the box. I also appreciated that it came with all new hardware—including washers, rubber gaskets, and bolts—which made the whole process even smoother.
J**S
Works as good as the original
Put it on in about a minute. Worked flawlessly. Fit like the original. All the hardware looked good. You can tell the finish is different and cheaper. Less of the casting marks cleaned up. But that’s purely cosmetic. Function is just as the original. I appreciate the extra hardware as well.
R**A
Fits Simpson 3100 PSI 2.5 GPM Pressure Washer
Fit our Simpson 3100 PSI 2.5 GPM Pressure Washer with the Honda GC190 Engine perfectly. Easy R&R. Have used it four or five times since installing it. No leaks, etc. The soap injector nipple corroded and blew off of the original manifold. Try as I might I could not get the rest of the threaded piece out or I would have just replaced that. So I bought the entire manifold for ~$40 more and am very happy with it. I'll post back if it doesn't work out for some reason.
J**S
You get what you pay of.
I should of ordered this OEM replacement pump first but I thought a knock off pump would work but after two tries I finally reached the conclusion that you get what you pay for and this pump worked the way it was supposed to, Lesson learned.
A**W
Perfect fit replacement Simpson 3000 psi
Easy to replace with 3 matching bolts provided.
G**G
Perfect fit
Works very well
D**K
Better quality than the original
Replaced it on my pressure washer and found it fit like original and seemed to be better constructed than the original.
J**I
Good service
1st manifold was defective. They replaced it no problem. 2nd one worked perfectly.
K**T
It is the right part and very easy to install
The price I paid was good compared to in store purchase . However a new pressure washer is maybe 600.00 so to pay 189 .00 for a small part seems excessive . However it worked great !
Trustpilot
3 weeks ago
1 month ago