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Koshin Pumps

Koshin pumps are the standard and known world wide in the contractor, rental, and portable pump markets as the brand to use. Most portable water pumps by Koshin feature Honda gas engines. Need replacement Parts or repair kits for your Koshin pump, we have them with many available on our web site.

All pumps can be provided in dual fuel system, gas and Propane LPG. Propane offers less expensive fuel, cleaner, safer and long lasting.

Koshin Trash Pumps

Koshin Trash Pumps powerfully handle solids ranging from 1.5 inches to 6 inches and the semi-trash pumps handling solids from 1.5 inches to 3 inches. Each trash pumps is designed for different sized debris, so check the specifications to ensure the pump is appropriate for your application. If you are not sure, give us a call and we will assist you in selecting the right trash pump. 3 YEAR Warranty!

Koshin High-Pressure Pumps

High pressure pumps are not a one size fits all pump category. Koshin High Pressure pumps come in gas and propane powered engines, with specifications designed for fire pumps, irrigation pumps, roofer pumps and more. 3 YEAR Warranty! 

Koshin Electric Submersible Pumps

The Koshin Submersible pumps are a heavy duty lineup of contractor pumps designed for dirty water pumping. These workhorses are ideal for contractors who need a submersible dewatering solution in a variety of conditions. 3 YEAR Warranty!

Koshin Pump Parts

As an authorized Koshin Pump dealer, you can order the full line of Koshin Parts from PumpBiz. If you are not sure of the correct part of kit, give us a call and we will make sure you get the right parts.


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  1. Koshin Pumps

    2" Trash Pump Impeller


    Trash pump replacement impeller. KTH50

    Koshin Impeller for Trash Pump KTH-50x Fits All Koshin WP30 Honda 0115558-H

    Impeller for Trash Pump 2"

    KTH-50X Learn More
  2. Koshin Pumps

    Submersible Dewatering Pump



    Heavy duty submersible dewatering pump, electric. 4760 GPH. Ponstar unique pump easily handles leaves, sewage and solids up to 5/8" diameter. PKS65011 PKS-65011CR. Submersible trash pump, electric. Minimum operating water level is 5.5". pks65011

    115v 1/2HP 4760 GPH Learn More
  3. Koshin Pumps

    High Pressure Water Fire Pump 2 inch Honda



    High Pressure water Pump 2 inch Honda. Koshin Pump with Honda engine Water Pump 2 inch. 6960 GPH. All aluminum die cast wet-prime pump housing, impeller and volute for lightweight and portability. Metal Carry handle and base. Honda GX160 4-cycle e...

    Honda GX160 5HP 7000GPH Learn More
  4. Koshin Pumps

    Roofers Pump, Flat Roof Dewatering Pump Kit



    Roofers Pump KIT. Ponding water on a roof causes damage to the flat roof. Why worry about roof drainage get a roof pump, Portable Damage Control at fire scene. Honda engine Water Pump 1-1/2 inch. Perfect complete kit for roofers. All aluminum die ...

    Pump kit w/hose Learn More
  5. Koshin Pumps

    Replacement power cord



    Replacement power cord for Koshin PS-65011, PKS 65011 submersible pumps. Genuine replacement parts. 20 foot long with molded 3-prong plug. 

    Impeller is 0390164, order separately.

    replaces 0430088

    20ft cord Learn More
  6. Koshin Pumps

    Submersible Dewatering Pump Heavy Duty


    10% Off Special Price $1,814.67 Regular Price $2,016.30

    3" Heavy duty submersible dewatering pump, Ponstar. Electric pump for dirty water in ditches. Often found in rental shops, contractor fleets.

    FREE 50 feet of discharge hose with order upon request.

    Industrial Grade Pump, Equipped With a Centrifu...
    115/230v 7200GPH 3" 2HP Learn More
  7. Koshin Pumps

    Koshin Impeller SEV-50x


    Koshin centrifugal pump impeller, OEM. 3/4" shaft
    SEV-50x Learn More
  8. Koshin Pumps

    Wheel Kit for Pumps

    WK-12 BAF

    Wheel kit for Koshin pumps with roll cage. WK-12 BAF is for all Koshin pumps except the KTZ-50, 80 and 100, KTH-80s and KTH-100S by Koshin. Epoxy coated steel handles with grips, zinc shaft and fasteners.
  9. Koshin Pumps

    Koshin Impeller Removal Tool



    Koshin Honda impeller removal tool. Why struggle to remove the threaded impellers off gas engine pumps like Koshin, Subaru, Honda, Northstar, MiTm, Hyundai, BE, Duromax, Generac, Multiquip, Wacker. Fits Semi-Trash and centrifugal pump impellers,

    Repair Tool Learn More
  10. Koshin Pumps

    Shaft Seal



    Mechanical shaft seal for Koshin STH-50x, KDH-50x, STV-50x, STH-80x, KDH-80x, STV-80x, KTH-50x SEH-50T. Repair part for semi-trash and trash pump made by Koshin and as a upgrade to cheap china clones. Includes solid silicon carbide seal faces alon...

    SiC water pump seal Learn More
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