CAT Triplex Plunger Replacement Pump

Marsoni

M251S

$541.76

Get it in 3 business days with 1 day shipping. Friday, May 29

CAT Triplex Plunger Replacement Pump5CP Plunger Pump Industrial Duty, Long Lasting, Dependable Pumps This is a triplex (three plunger rods) positive displacement, reciprocating, plunger pump, constructed of a forged brass manifold, 304SS valve assemblies, solid ceramic plungers and standard NBR (Buna N) seals and o rings. Max Flow 4. 3 gpm Max Pressure 3500 Inlet Port Size 1 2" NPT(F) Discharge Port Size 3 8" NPT(F) RPM 1645 Drive Type(s) Belt, Clutch, Flexible Coupling and Bellhousing

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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I haven't had a flat tire yet, so I also haven't had occasion to test these but they seem like great value for an extremely low price (especially versus a new tire.) I have handled them to try and gauge how quickly they'd smooth a hole, and they're rough / sharp and aggressive enough that I expect them to work quickly and well on not only tires, but on a variety of other materials. This pattern in particular should allow material to be shed and then passed backward pretty easily without clogging things up or slowing them down. If you've bothered to buy a patch kit for your tires, you really ought to have one of these around.

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Reviewed in the United States on January 18, 2026

Verified Purchase

Don

Birmingham, US

★★★★★ 5

Thank you!

Size: 1/4-Inch - With Adapter

Thank you!

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Reviewed in the United States on April 27, 2023

Verified Purchase

Ken C.

Omaha, US

★★★★★ 5

Makes plugging easy

Size: 1/4-Inch - With Adapter

Screw that T handle punch tool!!

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Reviewed in the United States on April 4, 2021

Verified Purchase

B Rukaz

Alexandria, US

★★★★★ 5

as advertised

As advertised

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Reviewed in the United States on June 2, 2026

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Drewski

Massapequa, US

★★★★★ 5

Great value, easy to use, and do a great job.

Great for tire repair! It fits in any drill in a snap, so you are able to ream the hole out in a tire so you can patch and repair the tire. My shop used these all the time, and never had any issues with them. They hold up well, and do the trick for just about any size hole in a tire. Great buy!

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Reviewed in the United States on January 27, 2026