EPA Information

What the EPA counts as an engine

The EPA defines an engine as an assembled block and crank. Everything from a short-block assembly upward falls under the same EPA engine rules.

A bare block and a bare crank are unrestricted parts. Anyone who assembles a new block to a new crank becomes an engine manufacturer, with the EPA responsibilities that go with it. That is why the level of completeness you order is not only a question of how much labor stays in your shop.

New certified engines

• Typically supplied through Industrial Engines.
• Certified compliant with the emissions rules in force when they were imported — now Tier 4.
• New old stock certified before 2013 is still certified for new replacement use, up to the year it was certified to.
• YANMAR’s Repurpose program originally ran on new old stock certified engines. The popular specs have been consumed; Mastry still holds a few of the less common ones.

New replacement-only engines

New replacement-only — NRO — engines come through different departments depending on how complete they are.

• Complete NRO engines have the same availability as above, typically through Industrial Engines.
• NRO short-block engines are supplied through REMAN, purchased through Parts.
• NRO engines built up from an NRO short block — to HBC, long-block, 3/4 or complete — are supplied through REMAN.
• Repurposed NRO engines are supplied through REMAN at any level of completeness.

Tracking, and what can leave the country

• All NRO engines, from short block to complete and from any department, fall under the same EPA NRO rules and must be tracked.
• Tracking covers engine models and serial numbers for every engine involved — imported, remanufactured or repurposed, and the recovered core.
• Remanufactured engines cannot be exported. If they could, the core pool the whole program runs on would slowly drain away.
• Repurposed NRO engines can be exported, but a core charge applies.
• NRO engines can be exported, and relabeled, with the appropriate documentation.