I believe most (all??) emissions warranties are 10 years.
Edit - looks like its a minimum of 8 years by federal law.
Dan
From Kubota's Owner's Warranty Information Guide valid for all products sold on or after January 1, 2023.
Kubota Tractor Corporation
Federal California Emission Control Systems Limited Warranty for
Non-Road Engines (Compression Ignition or CI)
The U.S. Environmental Protection Agency (EPA), the California Air Resources Board (CARB), and
KUBOTA Corporation (KUBOTA) are pleased to explain the Federal and California Emission
Control System Warranty on your non-road engine. In California, new 2023 model year heavy duty offroad
engines must be designed, built and equipped to meet California’s stringent anti-smog standards
adopted by the Air Resources Board pursuant to its authority in Chapter 1 and 2, Part 5, Division 26 of
the California Health and Safety Code. In other states of the U.S.A., new non-road engines subject to the
provisions of 40 CFR 1039 subpart A must be designed, built and equipped, at the time of sale, to meet
the U.S. EPA regulations.
KUBOTA must warrant the emission control system on your Compression Ignition engine for the period
of time listed below provided there has been no abuse, vandalism, neglect, improper maintenance or
unapproved modifications to your engine.
This emission warranty is applicable in all states of the U.S.A., its territories regardless of whether an
individual state, province, or territory has enacted warranty provisions that differ from the Federal
warranty provisions.
Your emission control system may include parts such as the fuel injection system and the air induction
system. Also included may be hoses, belts, connectors and other emission-related assemblies.
Where a warrantable condition exists, KUBOTA will repair your engine at no cost to you, including
diagnosis (if the diagnostic work is performed at an authorized dealer), parts and labor.
EMISSION DESIGN AND DEFECT WARRANTY COVERAGE
The emissions warranty period for the engine begins on the original date of sale to the initial purchaser
and continues for each subsequent purchaser for the period mentioned below.
If any emission related part on your engine is defective, the part will be repaired or replaced by KUBOTA
free of charge.
Page | 12
Coverage Periods
1. For non-road, Compression Ignition engines
The emissions warranty period for all engines rated under 19kW (~25 HP) is 2000 hours of operation or
two (2) years of use, whichever first occurs.
The emissions warranty period for constant speed engines rated under 37kW (50HP) with rated speeds
greater than or equal to 3000 rpm is 2000 hours of operation or two (2) years of use, whichever occurs
first.
The emissions warranty period for all other engines not already listed is 3000 hours of operation or five
(5) years of use, whichever first occurs.
If any emission related part on your engine is defective, the part will be repaired or replaced by KUBOTA
free of charge.
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