Off-Road Mobile Equipment Repowers

Other Grant Programs

Program Overview

This program provides incentives for engine replacement (repower) of off-road self-propelled vehicles such as tractors, backhoes, excavators, etc. Funds are provided on a first come, first serve basis and applicants must obtain approval and have a signed, executed contract from the SJVAPCD prior to purchase of new equipment. Any equipment purchased prior to contract execution is ineligible as this is not a rebate program.

Please review the Program Guidelines for complete information about requirements and eligibility.


The maximum funding amounts are:

  • Tier 2 Repower 80%
  • Tier 3, Interim Tier 4 or Tier 4 Repowers 85%


  • Existing diesel engine must be greater than 25 horsepower and provide motive power for a self-propelled off-road vehicle.
  • Be in operating condition and have operated in the state of California for at least 12 months prior to application submission.
  • Vehicle must operate at least 75% of the annual hours within California and 50% within SJVAPCD boundaries.
  • Must be in compliance with the In-Use Off-Road Diesel Vehicle Regulation, if applicable