Catalytic Converter Type Approved + Fitting Kit BM80213HK BM Catalysts 24423926 Posted on December 1, 2023 by admin VAUXHALL 24423926, 5854182, 5854358, 854182, 93189886, R1620077. Unique approval number for each BM part number. It works by converting exhaust emissions into less harmful ones when the gasses pass through it, triggering a chemical reaction.