4.0L has 5,000,000

[PEI-XJ]

http://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/Jeep_5_millionth_4.0_engine_r.jpg/450px-Jeep_5_millionth_4.0_engine_r.jpg

http://en.wikipedia.org/wiki/File:Jeep_5_millionth_4.0_engine_r.jpg

[prcjeep]

5 millionth 4.0... figured they would have gold plated it of something...