I use the VM Diesel Specialists for the Jeep engine parts, it doesn't need them very often, but these guys have always come up trumps, and they also offer some good advice.
The Jeep has the 2.8L VM diesel, which actually started life as a marine diesel until VM (VM Motori ) were bought out by Detroit diesel, which are owned by the Chrysler group, however, I have never seen a VM marine diesel !