Koshin STH-80X

Last updated: November 2, 2026

Koshin STH-80X
3.3/5#9 of 14 in 3 in and up water pumps
3.3

A Japanese-built 3 in semi-trash pump with a Honda engine, for dewatering and irrigation.

  • 238 gpmFlow
  • 85 ftHead
  • Semi-trashType
  • 3 inPorts
Check price at Amazon$725.54

Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Honda GX160 engine
  • Cast iron impeller and volute with silicon carbide seals
  • Full roll cage
Cons
  • Solids size and warranty not published
  • About 2 hours per tank

How it scores

The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.

Specifications

Model numberSTH-80X
Pumping
TypeSemi-trash
Ports3 in
Maximum flow238 gpm
Maximum head85 ft
Suction lift26 ft
Engine and build
EngineHonda GX160, 163 cc
Fuel tank0.8 gal
Runtime on a tank2 hr

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