4.0 timing belt

[59Willys]

Does anyone know at what mileage the timing belt should be changed?

 

[Bullardbs]

in what car truck?

 

[59Willys]

Jeep 4.0 in a 99TJ

 

[sha_ba_do_bang]

doesn't have a timing belt, it has a timing chain which only needs to be replaced if bad