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The document linked below is compiled by CARB staff to provide commercial harbor craft owners/operators a resource of certified Tier 4 engines. CARB staff will make every effort to update this list regularly. It does not constitute an endorsement of the listed engines and is intended as a resource only.

Listing of Certified Tier 4 Marine Engines and Marinized Tier 4 Final Non-Road Engines (Updated 10/11/2023)