Nonconforming marine engine.
Nonconforming marine engine. A marine SI engine which is not covered by a certificate of conformity prior to importation or being offered for importation (or for which such coverage has not been adequately demonstrated to EPA). Also, a marine SI engine which was originally covered by a certificate of conformity, but subsequently altered or modified such that it is no longer in a certified configuration.
40 CFR § 91.702
The definitions in subpart A of this part apply to this subpart. The following definitions also apply to this subpart.