


4000 PSI @ 4.0 GPM Horizontal Gas Engine Triplex Plunger Replacement Pressure Washer Pump
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
4000 PSI @ 4.0 GPM Horizontal Gas Engine Triplex Plunger Replacement Pressure Washer PumpAnnovi Reverberi AR RR4G40N horizontal gas engine triplex plunger pump is rated up to 4 GPM at max 4000 PSI spins a 24mm solid shaft at 1750 RPM using a 1 2F inlet and 3 8"F discharge thread. N version with a gas engine flange. Max GPM 4 Max L Min 15. 1 Max PSI 4000 MaxBar 275 Power EBHP 10. 9 Bore Dia mm 18 Stroke mm 12. 2 Crankshaft ID Stamp 3 Inlet 1 2" F Outlet 3 8" F Max Temp 140 F Oil Capacity (oz) 13. 35 Weight 17 RPM 1750 Shaft Size 24mm Shaft
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4.7 ★★★★★
Based on 135 reviews
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Product Reviews
★★★★★ 1
Not as described does not fit
Color: Silver
Not as described does not fit no good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
★★★★★ 4
Do one oil change myself and it’s more than paid for.
Color: Silver, Color: Silver
It is 74 mm. It’s nicely made of cast aluminum. It has a rough cast finish so it shouldn’t be difficult to hold on to. It does fit my Lexus filter and the price is very reasonable. It also fits the oil filter on my 1999 (antique) Harley Davidson Heritage Classic. Which is the primary reason I ordered it. I don’t know this for certain but I suspect it will fit all HD EVO engines. That would be 1984 through 1998 except the Heritage which didn’t change to the 88 Twin Cam until 2000.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 18, 2025
★★★★★ 1
Didnt fit my C300
Color: Silver
Didn’t fit my 2008 Mercedes C300 4matic sport.
I bought another one on Amazon from a different company and it did fit. Eochi or something brand.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 6, 2025
★★★★★ 1
Does not fit Boxster. Not even 74mm
Color: Silver
This is not measuring 74mm and absolutely does NOT fit my 2003 Porsche Boxster like the Amazon compatible check says it does.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 9, 2025
★★★★★ 1
Amazon Vehicle Tool Parts Fitting App incorrect
Color: Silver
Amazon your Vehicle fit is Wrong this tool will not work at all on 1981 240D Mercedes oil filter
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 24, 2025
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