If you want the OEM part code for it the part code is PZ32118002. I just had to get mine replaced on the insurances dime and I work at a body shop and with plenty of digging the part number was found. Be aware this is very pricey option if you want to make a non release series look like one and the splitter is already painted the yuzu yellow. the price on the splitter alone is $1,958.68. If you are looking to convert your car to have the oem looking splitter I would recommend the one from the link here.
https://www.ebay.com/itm/37220509738...RoClyEQAvD_BwE