Ceramic Substrates – Millennium Scoop Canada
Auto Parts Class Action

Ceramic Substrates

This class action alleges that the defendants unlawfully conspired to rig bids for and artificially inflate the prices of ceramic substrates for catalytic converters installed in new automotive vehicles and sold to dealers and consumers across Canada from July 1, 1999 to July 31, 2011.

Ceramic Substrates are uncoated ceramic monoliths (cylindrical or rectangular tubes) containing a fine mesh-like inner structure that runs the length of the tube.  Ceramic Substrates are coated with a mix of metals and other chemicals and then incorporated into catalytic converters.  Catalytic converters are emissions control devices that convert certain pollutants into less harmful gases and are essential for Automotive Vehicles to meet emissions standards.


  • January 24, 2020 – The Denso defendants have agreed to settle this action for $439,000.00 . A Court hearing is scheduled for February 28, 2020 to approve this settlement. Click here to read the Notice.
  • February 4, 2019 – the plaintiffs entered into a settlement agreement with NGK

Settlement Agreements

Settlement Agreement with NGK dated February 4, 2019

Notices to the Class

Notice of Hearing (EN, FR)