


3000 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
3000 PSI @ 4.0 GPM Horizontal Gas Engine Triplex Plunger Replacement Pressure Washer PumpAnnovi Reverberi AR RRA4G30N horizontal gas engine triplex plunger pump is rated up to 4 GPM at max 3000 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 3000 MaxBar 206 Power EBHP 8. 2 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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4.0 ★★★★★
Based on 1384 reviews
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Product Reviews
★★★★★ 5
Near OEM quality at 1/4 cost
Near OEM performance at 25% of the cost! Bosch Quality replaced NGKs/Toyota OEMs. Great value and now the engine is running smoothly! I have seen a slight improvement in my mpg @1mpg overall in mixed driving conditions.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
★★★★★ 5
Very Expensive
Had one cylinder misfiring so replaced coil and spark plug. Runs fine now, but old plug looked shot after only 5 months so I think the coil was the problem. Really good plug so far but very expensive.
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Reviewed in the United States on February 12, 2026
★★★★★ 5
A reliable set of spark plugs.
They’re made in Germany, what else can you say
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Work as well as the NGK's
Bought for a 2016 Mazda 6, I had NGK's in it for 5 months and had misfires, didnt have the money to throw more NGK's at it for troubleshooting. Bought these to try and they work great so far.
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Reviewed in the United States on April 29, 2026
★★★★★ 4
Faulty plug? Otherwise great set
Definitely better than the old plugs that probably had 80k miles on them.
The one star off is because I had a misfire after installing. Not sure if I damaged the plug or what, but a reinstall didn't fix the misfire. In my genius, I rushed to try to gap it and ended up breaking the iridium tip. Put the old plug into cylinder 3 (where the misfire was) and it was fine.
Gonna have to get a new single tomorrow at my local shop, but a bit frustrating to get a misfire after install.
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Reviewed in the United States on April 27, 2026