BAR-97 Emissions Inspection System

The BAR-97 Emissions Inspection System (EIS) inspects vehicles under simulated driving conditions to detect oxides of nitrogen (NOx), hydrocarbons (HC), and carbon monoxide (CO) emissions.

Model-year 1999 and older gasoline vehicles, any model year gasoline vehicle not equipped with OBD II, and any model year gasoline vehicle over 14,000 GVWR require inspection on the BAR-97 EIS.

For information on BAR-97 EIS inspection requirements, refer to the Smog Check Manual.

Certified Equipment, Parts, and Gases

Gas Cap Adapters

Fuel cap functional tests are required to be performed only on 1995 and older model year vehicles as part of a BAR-97 EIS inspection. Stations performing BAR-97 EIS inspections on these vehicles are required to maintain the following fuel cap adapters for use when completing fuel cap functional tests:

Stant Adapters

  • Blue 12403
  • Yellow 12404
  • Red with white ring 12405
  • Green 12406
  • Black with white ring 12407
  • Gray 12408
  • Pink 12426

Waekon Adapters

  • Red FPT25-1
  • Gray FPT25-2
  • Yellow FPT25-3
  • Black FPT25-4
  • Green FPT25-5