4L80E Rebuild Kit

The Monster-In-A-Box transmission rebuild kit for the 4L80E is available for GM vehicles. Found in this kit are all the parts you need to get your transmission running like a Monster. It comes as a performance Mega package and also has a SS variant for those needing a higher horsepower and torque rating. The Mega Monster-In-A-Box is applicable to 4L80E transmissions ranging from 1991 and up.