It is a roll pin you can get one at the hardware store. Have you gotten all of it out of the crank? Do you have what you need to torque it down properly?

99 Montero....15mpg! Sold (so sad)
02 Jetta TDI....48mpg!
03 2500 Ram QCLB Cummins....18mpg
02 2500 Yukon XL, We out grew the montero, at least it has one locker.....13mpg (sold)
01 montero limited