C4 torque converter Also, keep in mind that there are several different versions of the C4 transmission, so it's important to do some research before you make your purchase. Keep in mind that some newer models are designed exclusively for certain makes and models of vehicle. As a result, it may not be possible to find a replacement that's suitable for your vehicle. Let's take a look at some of the most common questions about the C4 Ford transmission and how it compares to other transmission options on the market. You can buy from link below – https://www.totalperformance.net.au/torque-converters-case-fill-ford-c4-windsor