Exmark Replacement Engine — Kohler ZT720-3024 21 HP Confidant Vertical Engine Click to zoom

Exmark Replacement Engine — Kohler ZT720-3024 21 HP Confidant Vertical Engine

MPN ENGINE

In stockReplacement Engine

Overview

🚚 Flat-rate LTL freight: $200
Ships palletized by LTL freight to the lower 48 states + DC for a flat $200. Need it fast? Choose Expedited or Need It Fast ($235.95) at checkout and we'll call you with the fastest options.

Need a replacement engine for your Exmark equipment? This is a brand-new, genuine Kohler ZT720-3024 (Rehlko spec PA-ZT720-3024) 21 HP Confidant vertical-shaft engine with a 1-1/8" x 4-5/16" crankshaft — the engine spec used on Exmark machines.

Kohler Engines now operates as Rehlko; same engine, same factory, same part number. Ships new in the crate with the manufacturer's engine warranty.

Before you order: confirm fitment

  • Check the engine tag on your Exmark machine: it should read ZT720-3024 / PA-ZT720-3024.
  • Match crankshaft diameter and length, mounting pattern, PTO/clutch, fuel and wiring connections.
  • Not sure which engine your machine has? Call (646) 666-7225 with your machine model and serial number and we'll confirm the right spec.

Engine specifications

Manufacturer Kohler (now Rehlko)
Part number (MPN) ZT720-3024
Rehlko spec number PA-ZT720-3024
Series Confidant
Gross power 21 HP
Displacement 725 cc
Cylinders V-twin, OHV
Crankshaft orientation Vertical
Crankshaft 1-1/8" x 4-5/16"
Fuel system Carbureted gasoline
Air cleaner Heavy-Duty Air Cleaner
Fuel pump Yes
Starter Electric Start
Oil capacity 2.0 qt (1.9 L)
Muffler Not Included
Shipping weight 99 lb
Condition New, genuine OEM
Fits Exmark

Frequently asked questions

What engine does the Exmark use?

This listing is the Kohler ZT720-3024 spec (21 HP). Always confirm against the tag on your existing engine.

How much is shipping?

Engines ship palletized by LTL freight for a flat $200 to the lower 48 + DC. Expedited / Need It Fast ($235.95) is available at checkout.

Is this the same engine as Kohler ZT720-3024?

Yes — this is the same new Kohler/Rehlko engine sold on our Kohler ZT720-3024 page, listed here by machine for easy lookup.