As a general reference, the 80 amp alternator was typically installed in earlier models of the BMW 328IC, while the 140 amp alternator was introduced later. However, it's important to note that there may be variations depending on your vehicle's production year, trim level, and specific equipment.
To ensure you get the correct alternator for your vehicle, it's recommended to provide your vehicle's exact specifications and details, such as the VIN (Vehicle Identification Number) when making an inquiry or placing an order. This information will help the retailer or mechanic identify and supply the appropriate alternator for your 1996 BMW 328IC.