



CAT Triplex Plunger Replacement Pump
Marsoni
M251S
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
Quick Dispatch:
Your CAT Triplex Plunger Replacement Pump orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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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.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.8 ★★★★★
Based on 47 reviews
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Product Reviews
★★★★★ 4
OEM quality
Style: One Piece
Good quality replacement. Perfect fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2025
★★★★★ 5
Exact fit, no trimming needed
Style: One Piece
Ordered this for my Ford F-150 and it dropped right into the airbox perfectly — same dimensions as the OEM filter, same end seals, same fit. No gaps, no air bypass around the edges. Clean swap in under five minutes. Engine runs smooth and the price is unbeatable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
★★★★★ 5
very nice product
Style: Two Pieces
It fits perfectly. Easy to install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
★★★★★ 5
Good Product and Price.
Style: One Piece
Great filter, fits perfectly. Very close to OEM fit. I have 2015 Mercedes E350, fit perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
★★★★★ 5
good name bosch ,works well
its a bosch it fits does not leak so its good in my opinion
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026