The Weiler B458 is a leveling machine for steeper terrain and excels in select or clear-cut logging. The B458 provide a leading combination of lift capacity, swing torque, and drawbar. Multi-function performance is achieved through dedicated pumps and optimized circuit configurations. The B458 has an extended track roller frame option that includes two additional bottom rollers for a total of eleven, enhancing overall machine stability in steep terrain. In addition, a standard or heavy counterweight option is available for a diversity of harvesting conditions. Unobstructed ground clearance enables unimpeded travel over stumps, rocks, and other debris.
| Engine Model | Cat C9.3 Tier 4 Final |
| Gross Power | 298 hp |
| Ground Clearance | 35" |
| Weight w/out Head | 79,221 lb |
| Engine Displacement | 568 in^3 |
| Max Flow | 322 gpm |
| Max Reach | 26'10" |
| Lift at Max Reach | 13,918 lb |
| Tractive Effort | 81,229 lbf |
| Undercarriage Size | 336 HD HEX |
| Undercarriage Pitch | 8.5" |
| Track Gauge | 114" |
| Track Length | 191" |
| Fuel Tank Capacity | 216 gal |
| Engine Oil Capacity | 10.6 gal |
| Transport Width | 11'11" |
| Height | 12'11" |
| Length (w/201 saw) | 34'1" |