OTC's 6787 EVAP Access Port Tool is designed to help technicians diagnose all GM 5/16" EVAP line systems. Adapter connects into the EVAP system line at the canister quick-connect fitting. EVAP port fitting allows EVAP system testing and diagnosis. Use with the OTC 6522 LeakTamer smoke machine (not included) to perform flow testing and leak testing based on service information procedures. Applications include all GM 5/16 inch EVAP line systems. Similar to OE tool number CH-48096. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it's a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians' productivity and shop profits.