The Weiler B457 track feller buncher models have the latest Cat® C9.3 engine that produces 298 hp (222 kw) and meets U.S. EPA Tier 4 Final emission standards. A Tier 3 engine option is also available. The B457 is a non-leveling model best suited for plantation thinning, biomass harvesting, and medium-production select or clear-cut applications; The B457 provide a leading combination of lift capacity, swing torque, and drawbar. Multi-function performance is achieved through dedicated pumps and optimized circuit configurations. 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 | 33" |
| Weight w/out Head | 67,020 lb |
| Engine Displacement | 568 in^3 |
| Max Flow | 322 gpm |
| Max Reach | 27'4" |
| Lift at Max Reach | 13,918 lb |
| Tractive Effort | 68,848 lbf |
| Undercarriage Size | 336 HD HEX |
| Undercarriage Pitch | 8.5" |
| Track Gauge | 102" |
| Track Length | 192" |
| Fuel Tank Capacity | 216 gal |
| Engine Oil Capacity | 10.6 gal |
| Hydraulic System Capacity | 79.8 gal |
| Transport Width | 10'11" |
| Height | 11'3" |
| Length (w/201 saw) | 34'6" |