Kohler Engines. Relentless Power. Legendary Performance.

Warranty Information

We Stand Behind Our Engines

At KOHLER Co., quality always comes first. That's why we back all of our engines with comprehensive warranties. Find out more about the terms of your engine's warranty.

Kohler Diesel Air-Cooled Warranty Information

The following warranty policies are current for Kohler engines. To determine the warranty and length of coverage associated with your Kohler engine, please refer to the Equipment Owner’s Manual and/or Kohler Warranty Card provided with the engine during sale as some engines may be covered by a warranty policy different than what is listed.

3 Year Limited Warranty, Kohler® Diesel

Kohler Co. warrants to the original retail consumer that each new KOHLER Diesel engine will be free from manufacturing defects in materials or workmanship in normal service for a period of three (3) years or 2000 hours whichever occurs first from the date of purchase, provided it is operated and maintained in accordance with Kohler Co.’s instructions and manuals. If no hour meter is installed as original equipment then 8 hours of use per day and 5 days per week will be used to calculate hours used.

Our obligation under this warranty is expressly limited, at our option, to the replacement or repair at Kohler Co., Kohler, Wisconsin 53044, or at a service facility designated by us of such parts as inspection shall disclose to have been defective. This warranty does not apply to defects caused by unreasonable use, including faulty repairs by others and failure to provide reasonable and necessary maintenance.

The following items are not covered by this warranty:
Engine accessories such as fuel tanks, clutches, transmissions, power-drive assemblies and
batteries, unless supplied or installed by Kohler Co. These are subject to the warranties, if any, of their manufacturers.

INCIDENTIAL OR CONSEQUENTIAL DAMAGES OF ANY KIND, including but not limited to labor costs or transportation charges in connection with the repair or replacement of defective parts.


We make no other express warranty, nor is any one authorized to make any on our behalf.
Some states do not allow limitations on how long an implied warranty lasts, or the exclusion or
limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state.

To obtain warranty service
Purchaser must bring the engine to an authorized Kohler service facility, to find an
authorized service facility near your otherwise, please contact Kohler at 1-800-544-2444 or write to: Kohler Co. Attn: Engine Warranty Service Dept., 444 Highland Drive, Kohler, Wisconsin 53044

Federal and California Emission Control Systems
Limited Warranty
Off-road Diesel Engines

The U.S. Environmental Protection Agency (EPA), the California Air Resources Board (CARB), and Kohler Co. are pleased to explain the Federal and California Emission Control System Warranty on your [current year – following year]* off-road compression ignition (diesel) engine. Kohler Co. warrants that the engine is designed, built and equipped to meet the U.S. EPA and CARB off-road diesel regulations. The warranty period shall begin on the date the engine or equipment is delivered to an ultimate purchaser. The engine must be free of material or workmanship defects for the time period detailed in the manufacturer’s warranty coverage section of this document below. Kohler Co. must warrant the emission control system on the engine for the period of time listed in the section below, provided there has been no abuse, neglect or improper maintenance.

The owner shall not be charged for diagnostic labor that leads to the determination that a warranted part is in fact defective, provided that such diagnostic work is performed at a warranty station.

Your off-road, diesel engine emission control system is covered under warranty for a period of five (5) years or 3,000 hours, whichever occurs first, beginning on the date the engine or equipment is delivered to an ultimate purchaser for all constant speed engines with maximum power 19≤kW<37 and rated speed less than 3,000 rpm, all variable speed engines with maximum power 19≤kW<37, and all variable or constant speed engines with maximum power greater than 37 kW. Your off-road, diesel engine emission control system on variable or constant-speed engines with maximum power less than 19 kW, and for constant speed engines with maximum power 19≤kW<37 and rated speed equal to or greater than 3,000 rpm is covered under warranty for a period of two (2) years or 1,500 hours, whichever occurs first.

(a) You are responsible for the performance of all required maintenance including the use of approved fluids as detailed in your operators/ owners manual. It is not necessary for replacement parts to be the same brand or by the same manufacturer as the original part sold with the engine. Such use shall not reduce the warranty obligations of the engine manufacturer.
(b) Be aware, however, that Kohler Co. may deny warranty coverage if the engine or a part has failed due to abuse, neglect, improper maintenance or unapproved modifications.
(c) You are responsible for initiating the warranty process. The ARB suggests that you present your heavy-duty off-road engine to a Kohler dealer as soon as a problem exists. Call 1-800-544-2444 or access our website at www.kohlerengines.com, for the names of the nearest service centers.

Kohler Co. will repair or replace emission control system parts, components and sub-assemblies found to be defective with respect to materials or workmanship at no cost to you including engine exhaust system related diagnosis, labor and parts. The choice and responsibility of the decision to repair or replace an emission control system defect will be solely that of Kohler Co. Emission control system parts/ components covered by the Federal and California Emission Control Systems Limited Warranty are listed below.

• Fuel injector(s)
• Injection pump(s)
• Exhaust manifold
• Intake manifold
• Exhaust gas recirculation (EGR) tube
• Crankcase ventilation valve
• Electronic control unit (ECU) if equipped
• Sensors associated with ECU operation
• Emission control information labels
• Turbocharger (if equipped)
• Fuel limiting device

Parts/ components that are scheduled to be replaced as part of the required maintenance schedule will be covered under the warranty provisions for a period of time up to the first scheduled replacement point for the subject parts/ components. Subsequent damage to other engine components as a direct result of a warrantable failure an exhaust emission part/ component will be covered under the warranty provisions described herein.

As the heavy-duty off-road engine owner, you should however be aware that Kohler may deny you warranty coverage if your heavy-duty off-road engine or a part has failed due to abuse, neglect, improper maintenance or unapproved modifications. Only due to the above reasons, the manufacturer may deny the warranty coverage.

The owner is responsible for the proper use and maintenance of the engine. Kohler Co. recommends that all receipts and records covering the performance of regular maintenance be retained in case questions arise. If the engine is resold during the warranty period, the maintenance records should be transferred to each subsequent owner. Kohler Co. may not deny warranty repairs solely because of the lack of repair, maintenance or failure to keep maintenance records.

Normal maintenance, replacement or repair of emission control devices and systems may be performed by any repair establishment or individual; however, warranty repairs must be performed by a Kohler authorized service center. Any replacement part or service that is equivalent in performance and durability may be used in non-warranty maintenance and repairs, and shall not reduce the warranty obligations of the engine manufacturer.