Several manufacturers of automobile parts conspired to fix prices on filters, Bay Area Truck Services claims in a class action filed in San Jose Federal Court. Defendants include Champion Laboratories, United Components, Purolator Filters NA, Honeywell International, Wix Filtration, Cummins Filtration, The Donaldson Co., Baldwin Filters, Bosch USA, Mann + Hummel USA, and Arvinmeritor.
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