The Ferrari Q1 earnings call was full of information , and perhaps the biggest revelation was that Ferrari is going to stop supplying engines to Maserati . CEO Louis Camilleri broke the news, and The Motley Fool posted a transcript of the whole call online."Eventually, we will no longer supply engines to Maserati, which actually from our perspective is actually a good thing, both from a margin perspective, but also the fact that we can transfer a lot of the labor that's been focused on the engines to the car side of the business," Camilleri says.Maserati has used Ferrari engines (arguably, one of the most compelling reasons to buy a Maserati) in its vehicles since 2002, a little while after Fiat passed Maserati off to the prancing horse. The partnership continued as both Ferrari and Maserati were under the same house at FCA . Then when Ferrari was spun off from FCA in 2015, they kept the supply steady to Maserati. Those engines include a 3.8-liter twin-turbo V8, 3.0-liter twin-turbo V6 and a 4.7-liter naturally aspirated V8.Camilleri said Ferrari will officially stop in 2021 or 2022, with no intention of supplying anybody with engines beyond that. Of course, this leaves Maserati high and dry with no engines for its growing lineup . Maserati will have to reach into the FCA parts bin, find a new outside supplier or develop its own engines. Battery electric sounds out of the question . As of now, there doesn't appear to be a clear plan going forward. We've reached out to Maserati to see if they have any comment on the situation as it stands.