| Databook | Sales Code | Description |
| IC Bus | | |
| | 49BRM | HEATER, ENGINE COOLANT Fuel Fired, Espar, 17,000 BTU, Mounted Forward of Rear Wheel Pocket, with Exhaust Exit Out left side, AFT of Wheel Pocket |
| | 49EAS | HEATER, ENGINE COOLANT Fuel Fired, Espar, 42,000 BTU, with Exhaust Exit Ahead of Rear Axle |
| | 49MSY | HEATER, ENGINE COOLANT Fuel Fired, Espar, 42,000 BTU, with Exhaust Exit Under Bumper, Mounted Aft of Between the Rail Fuel Tank, Left Side |
| | 49WNS | HEATER, ENGINE COOLANT Fuel Fired, Espar, 17,000 BTU, with Exhaust Exit Ahead of Rear Axle |
| | 49NAA (Temp Controller) | TIMER, FUEL FIRED HEATER {Multi Max F1000} Digital, for Espar Fuel Fired Heater Mounted in Right Hand Shifter Panel |
