OXE Marine AB has received the official approval and issuance of the U.S. Environmental Protection Agency (EPA) Tier 3 certificate for its OXE300 outboard diesel engine. The company said that the certificate is valid for all power ratings it had applied for, 200 hp-310 hp (prop power), which further extends the potential of the power-range for the certified OXE300 unit.
The EPA certification approval allows OXE Marine AB to sell and distribute its OXE300 in all markets where EPA Tier 3...
https://www.workboat.com/news/people-and-products/oxe300-outboard-gets-epa-tier-3-certificate/