# 40 C.F.R. § 1068.225 (2026): Exempting engines/equipment for national security > Federal · Regulations · In force URL: https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_225 ## Section - **Citation:** 40 C.F.R. § 1068.225 (2026) - **Heading:** Exempting engines/equipment for national security - **Jurisdiction:** Federal - **Kind:** Regulations - **Status:** In force - **Text as of:** August 14, 2026 - **Source:** Compiled text - **Location:** Title 40 CFR: Protection of Environment / Chapter I / Part 1068 / Subpart C / § 1068.225: § 1068.225 Exempting engines/equipment for national security. ## Text The standards and requirements of the standard-setting part and the prohibitions in § 1068.101(a)(1) and (b) do not apply to engines exempted under this section. (a) An engine/equipment is exempt without a request if it will be owned by an agency of the Federal Government responsible for national defense and it meets at least one of the following criteria: (1) An engine is automatically exempt in cases where the equipment in which it will be installed has armor, permanently attached weaponry, or other substantial features typical of military combat. Similarly, equipment subject to equipment-based standards is automatically exempt if it has any of these same features. (2) In the case of marine vessels with compression-ignition engines, an engine is automatically exempt if the vessel in which it will be installed has specialized electronic warfare systems, unique stealth performance requirements, or unique combat maneuverability requirements. (3) Gas turbine engines installed in marine vessels are automatically exempt. (4) An engine/equipment is automatically exempt if it would need sulfur-sensitive technology to comply with emission standards, and it is intended to be used in areas outside the United States where ultra low-sulfur fuel is unavailable. (b) For the circumstances described in paragraphs (a)(1) and (2) of this section, an engine/equipment is also exempt without a request if it will be used, but not owned, by an agency of the Federal Government responsible for national defense. (c) Manufacturers may produce and ship engines/equipment under an automatic exemption as described in paragraph (a) or (b) of this section if they receive a written request for such engines/equipment from the appropriate federal agency. (d) Manufacturers may request a national security exemption for engines/equipment not meeting the conditions of paragraphs (a) and (b) of this section as long as the request is endorsed by an agency of the Federal Government responsible for national defense ibed in paragraph (a) or (b) of this section if they receive a written request for such engines/equipment from the appropriate federal agency. (d) Manufacturers may request a national security exemption for engines/equipment not meeting the conditions of paragraphs (a) and (b) of this section as long as the request is endorsed by an agency of the Federal Government responsible for national defense. In your request, explain why you need the exemption. (e) Add a permanent label to all engines/equipment exempted under this section, consistent with § 1068.45, with at least the following items: (1) The label heading “EMISSION CONTROL INFORMATION”. (2) Your corporate name and trademark. (3) Engine displacement, family identification, and model year of the engine/equipment (as applicable), or whom to contact for further information. (4) The statement: “THIS [engine, equipment, vehicle, etc.] HAS AN EXEMPTION FOR NATIONAL SECURITY UNDER 40 CFR 1068.225.” [81 FR 74227, Oct. 25, 2016] ## Nearby sections - [40 C.F.R. § 1068.201 (2026) § 1068.201 General exemption and exclusion provisions.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_201.md) - [40 C.F.R. § 1068.210 (2026) § 1068.210 Exempting test engines/equipment.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_210.md) - [40 C.F.R. § 1068.215 (2026) § 1068.215 Exempting manufacturer-owned engines/equipment.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_215.md) - [40 C.F.R. § 1068.220 (2026) § 1068.220 Exempting display engines/equipment.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_220.md) - [40 C.F.R. § 1068.225 (2026) § 1068.225 Exempting engines/equipment for national security.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_225.md) - [40 C.F.R. § 1068.230 (2026) § 1068.230 Exempting engines/equipment for export.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_230.md) - [40 C.F.R. § 1068.235 (2026) § 1068.235 Exempting nonroad engines/equipment used solely for competition.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_235.md) - [40 C.F.R. § 1068.240 (2026) § 1068.240 Exempting new replacement engines.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_240.md) - [40 C.F.R. § 1068.245 (2026) § 1068.245 Temporary provisions addressing hardship due to unusual circumstances.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_245.md) - [40 C.F.R. § 1068.250 (2026) § 1068.250 Extending compliance deadlines for small businesses under hardship.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_250.md) - [40 C.F.R. § 1068.255 (2026) § 1068.255 Exempting engines and fuel-system components for hardship for equipment manufacturers and secondary engine manufacturers.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_255.md) - [40 C.F.R. § 1068.260 (2026) § 1068.260 General provisions for selling or shipping engines that are not yet in their certified configuration.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_260.md) - [40 C.F.R. § 1068.261 (2026) § 1068.261 Delegated assembly and other provisions related to engines not yet in the certified configuration.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_261.md) - [40 C.F.R. § 1068.262 (2026) § 1068.262 Shipment of engines to secondary engine manufacturers.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_262.md) --- Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T40_P1068_S1068_225. Check the current official text before relying on it. Not legal advice.