Two businesses that share a factory and nothing else
An auto component manufacturer usually runs an OEM business and an aftermarket business at the same time, and they are almost opposites. The OEM side is a small number of enormous decisions, taken over quarters, by four different functions at the customer, with tooling investment on your side before a single part is sold. The aftermarket side is a distribution business: many small accounts, weekly order rhythms, territory coverage and part-number enquiries.
Running both through one undifferentiated lead list is why commercial reporting in this industry is so often useless. The forecast is dominated by two OEM opportunities that may or may not land next year, while the aftermarket revenue that actually pays the bills every month is invisible.