Dimensions
| Configuration | Standard | Optional |
|---|---|---|
| Drive | 4×2, 6×4 | 4×2, 6×4 |
| BBC | 132″ | 132″ |
| BA | 33″ | 33″ |
| Wheelbase | Up to 448″ | Up to 448″ |
| Frame | Single-channel @ 2.5 million RBM | Double-channel @ 3.2 million RBM and 4.5 million RBM / Triple-channel @ 5.6 million RBM / Partial frame liners available for increased RBM in specific areas |
Western Star 4900 EX Cab
| Configuration | Standard | Optional |
|---|---|---|
| Cab Type | Standard with roped in windshield | Severe Duty with bonded windshield |
| Cab Interior | Obsidian Black Trim with Grey Upholstery | Grey Trim with Maple Leaf Red Upholstery / Grey Trim with Smoky Mountain Gray Upholstery / Tan Trim with Prairie Buckskin Upholstery |
| Hood | Fiberglass Traditional Non-Sloping Hood |
Engine Details
| Configuration | Standard | Optional |
|---|---|---|
| Number Of Cylinders | 6 | 6 |
| Engine Make | Detroit Diesel | Detroit Diesel / Cummins |
| Engine Model | Detroit DD13 / Detroit DD15 | Detroit DD16 / Cummins ISX15 |
| Displacement | 12.8L / 14.8L | 15.6L / 15.0L |
| Power | 350-505 hp / 400-505 hp | 500-600 hp / 400-600 hp |
| Power Measured @ | 1625 rpm / 1800 rpm | 1800 rpm / 1900 rpm |
| Peak Torque | 1250-1850 lb-ft / 1550-1750 lb-ft | 1850-2050 lb-ft / 1450-2050 lb-ft |
| Torque Measured @ | 975 rpm / 1100 rpm | 975 rpm / 1200 rpm |
| Aspiration | Turbocharged | Turbocharged |
Transmission
| Configuration | Standard | Optional |
|---|---|---|
| Drive | 4×2, 6×4 | |
| Transmission | Eaton Fuller FR-13210B (7, 10, 11, 13, 15 and 18-speed) | Eaton Fuller UltraShift PLUS / Allison Automatic 4000, 4500, 4700 |
| Front Axle | Detroit single 12,000-20,000 lb | Hendrickson single 12,500 lb / Meritor single 12,000-23,000 lb |
| Rear Axle | Detroit tandem 40,000-46,000 lb | Meritor single 23,000 lb / Meritor tandem 40,000-70,000 lb / Meritor tridem 69,000-77,000 lb / Sisu tandem 70,000 lb / Sisu tridem 105,600 lb |
| Front Suspension | Taperleaf 12,000-20,000 lb | Flatleaf 14,600-23,000 lb |
| Rear Suspension | AirLiner 23,000-69,000 lb | Hendrickson 40,000-65,000 lb / Chalmers 46,000-52,000 lb / Neway 46,000-78,000 lb / Reyco 23,000 lb / TufTrac 40,000-52,000 lb |
| Brakes | WABCO 4S/4M and 6S/6M ABS with and without traction enhancement |
Service Refill Capacities
| Configuration | Standart | Optional |
|---|---|---|
| Fuel Tank Capacity | 60-150 gal (227-567 L) | 50-150 gal (189-567 L) |
| Fuel Tank Type | Aluminum 25″ cylindrical – RH or LH | Aluminum 23″ cylindrical – RH or LH / Combination fuel / hydraulic tanks |
| DEF Tank Capacity | 6, 13, 23 gal (23, 49, 87 L) | 6, 13, 23 gal (23, 49, 87 L) |
