This product is an OEM ignition coil spark plug module unit for Mercedes-Benz AMG models including S-Class, E-Class, C-Class, CL-Class, GL-Class, and SL-Class. It has interchange part numbers 0045843138 and 0045842538 and manufacturer part numbers 1569064400, 1569060500, 1561500280, 1569064300, 1561500080, and 1561500180. The product is made in Germany and comes with a 6-month warranty.