What year and vehicles contain a cummins 4BT 3.9L engine?

The Cummins 4BT 3.9L engine wasn't used in a wide range of passenger vehicles like some other engines. It's primarily known for its use in light-duty trucks and specialty vehicles. Pinpointing the exact years and vehicle models is difficult because it was often a factory option or a retrofit.

You're more likely to find it in vehicles from the 1980s through the early 2000s. Precise years depend on the manufacturer and specific model. The 4BT was popular in:

* Ford: Some older Ford trucks might have had them as a conversion or special order. Finding specific years is challenging.

* Dodge/Ram: Again, more likely in older models as a potential aftermarket installation or possibly a less common factory option in certain years.

* International Harvester/Navistar: International trucks were a more common application for the 4BT. You'd be more likely to find this engine in various International models across this timeframe.

* Specialty Vehicles: Many smaller manufacturers or custom builders of equipment like delivery trucks, utility vehicles, and other work trucks used the 4BT.

To find a specific year and model, you'd need to consult resources specific to the manufacturer's historical records or specialized forums for vintage trucks and equipment. A simple search online for "Cummins 4BT vehicles" combined with the manufacturer you're interested in might yield some results. However, comprehensive documentation is unlikely to exist in one place.