UNSPSC 25173700: Exhaust and emission controls

UNSPSC 25173700 Exhaust and emission controls is a Class code that encompasses the removal, replacement, and supply of exhaust system components for vehicles, equipment, and facilities—ranging from transit bus exhaust parts and aftermarket automotive components to facility-level exhaust evacuation systems. State and local governments procure under this code through departments of transportation, county and municipal fleet services, school districts, transit authorities, and facility maintenance operations. Recent solicitations show activity across multiple issuing bodies: the California Department of Transportation (Caltrans) has issued multiple Invitation for Bids for exhaust evacuation system replacements at equipment shops; the Metropolitan Transit Authority of Harris County, Texas (METRO) is procuring exhaust parts for transit buses; and school districts and county fleet services are establishing supply agreements for automotive exhaust and emission-related repair parts. The work ranges from capital replacement projects—such as Caltrans' removal and installation of new exhaust evacuation systems with motorized hose reels, ducting, and variable frequency devices—to consumable supply contracts in which vendors furnish OEM or equivalent exhaust components to support ongoing fleet maintenance.

Activity concentrates in California, Texas, and Florida, with Caltrans District 32 representing a significant repeat buyer with consecutive IFBs for exhaust evacuation system replacements in Fresno, Humboldt, Alameda, and San Bernardino counties through March 2026. Representative opportunities include Caltrans District 32's IFB 32A0692 for exhaust evacuation system replacement at Equipment Shop 6 in Fresno County (due March 12, 2026, estimated project value $461,000); METRO's IFB for purchase and delivery of exhaust parts for transit buses (due March 11, 2026, brand-name components from Cummins, MCI, NABI, and other manufacturers); Milwaukee County's sealed bid for laundry exhaust system installation at the Community Reintegration Center (due June 3, 2026); and the School Board of Sarasota County's Bid #26-0124 for automotive and light truck repair parts including exhaust components across 19 OEM manufacturers (due February 12, 2026, one-year term with two optional renewals). Caltrans procurements carry mandatory small business and disabled veteran business enterprise participation requirements with bid caps at $461,000 and prevailing wage compliance. METRO's procurement includes local preference provisions favoring eight-county area vendors within three percent of the lowest bid and actively encourages small business participation.