it's a 4.0 all the ones I've ever had to change is abused even if the engine does go $400 buck is great for this clean truck besides it don't matter if you get drive it for 20 or 30,000 more miles but I understand the mileage thing being a mechanic we get people at the shop that swear they're car is totally worn out at 100,000 I have pick up some good deals because of it GLWS man maybe someone will buy it if to just run the rest of the way in the ground or mud ride the s&*t out of lol