| Isuzu FXR Diesel Specifications | ||
| Base Model Description | FXR Single | FXR Tandem |
| GVWR | 33,000 lbs | 52,350 lbs |
| Engine | 6 Cylinder Turbo/Intercooled Diesel 6HK1-TC | |
| -Horsepower (Gross) | 230 HP @ 2,200 RPM | 250 HP @ 2,200 RPM |
| -Torque (Gross) | 660 lbs./ft. @ 1,450 RPM (A/T) | 660 lbs./ft/ @ 1,450 RPM (A/T) |
| -Displacement | 7.8 L (475 CID) | |
| Transmission | Allison MD3060P 6-speed (A/T) | |
| Front Axle | ||
| -Standard | 12,000 lbs. | 14,600 lbs. |
| -Available | 14,600/16,000 lbs | 2,000/16,000 lbs |
| Front Suspension | ||
| -Standard | 12,000 lbs. Tapered-leaf | 14,600 lbs. Multi-leaf |
| -Available | 14,600/16,000 lbs. | 12,000/16,000 lbs. |
| Rear Axle | Dana | |
| -Standard | 21,000 lbs. - single speed | 40,000 lbs. - single speed |
| -Available | 21,000-23,000 lbs. - single or two-speed n/a | |
| Rear Suspension | ||
| -Standard | 23,000 lbs. Multi-Leaf | 40,000 lbs. |
| Fuel Capacity | 50 gal. | |
| Frame Width | 33.5 in. | |
| Section Modulus | 12.69 in.(3) | |
| RBM | 1,015,000 lbs.-ft./in. | 1,396,000 lbs.-ft./in. |
| Tires | 11R-22.5G (14 Ply) | |
| Brakes | Air Brake ABS 4-Channel | |
| Alternator | 100 AMP | |
| Battery | Two - 750 CCA each | |