1981 International S SERIES
1981 International S SERIES
| State: | Pennsylvania |
| City: | West Alexander |
| Address: | 212 Peachtree St Nw Atlanta, GA 30203-1504 |
| Zip code: | 19611 |
| Make: | Acura |
| Model: | PROSTAR |
| Body type: | Pickup / Truck |
| Year: | 1981 |
| Mileage: | 190000 |
| Interior color: | Gray |
| Exterior color: | Gray |
| Transmission: | manual |
| Engine: | 1 Cylinder |
| Manufacturer: | Navistar International Transportation Corp. |
| Production Seq. Number: | B20847 |
| Fuel Type: | Gasoline |
| Drive Line Type: | 4x2 |
| Vehicle Type: | Truck |
| Vehicle Class: | Truck Delivery |
| Brake System: | Hydraulic |
| Country: | UNITED STATES |
| Assy. Plant: | Springfield, OH |
| Check Digit: | 8 |
| Type: | Car |
| Cab Type: | Chassis & Cab |
| Engine Manufacturer: | Navistar |
| Emissions Code: | unknown |
The International S-Series "Schoolmaster" is a Type C (conventional) bus chassis that was manufactured by International Harvester, which became Navistar in 1986. It was used primarily as a cowled chassis for both school bus and commercial bus applications; it also was the basis for the front and rear-engine stripped chassis that International uses for bus applications as well.
Introduced in 1979 to replace the Loadstar bus chassis, the S-Series was produced in two distinct generations. In 1989, all versions of the S-Series were updated; both versions were offered that year. The 3800 was produced until 2004, outliving other versions of the S-Series/4000-Series by three years. In production for 25 years, the S-Series bus chassis was the longest produced model ever made by International; it was also the last designed by International Harvester before the transition to Navistar.
