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49X

MODEL

49X

The industry leading heavy-duty truck for durability, safety, and getting the job done.

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OVERVIEW

TURNING MOUNTAINS INTO MOLEHILLS

The Western Star 49X isn't just another truck pulling into a jobsite - it's a statement. A statement of strength, of durability, and of expertise. 

 

Engineered for the demands of Class 8 vocational work, the 49X delivers uncompromising durability and power for every application ranging from construction, logging, oilfield, to over the road hauling. Each component is crafted to withstand any type of environment, while advanced technology and operator-focused design ensure you can tackle the job with confidence. The workday is demanding - the 49X makes it easy.

49X

FEATURES

Chassis

CHASSIS

Built For The Challenge

The heavy-duty vocational frame underneath the 49X is engineered to stand up to the demands of severe service applications.

Cab

CAB

Making Legendary Performance Lighter And Safer

Constructed from a premium-grade aluminum and enhanced with steel reinforcements.

powertrain

POWERTRAIN

Powered By Proven Performance

Whether you're working on construction sites, in quarries, in logging, or even on the road, there's a Detroit or Cummins engine option for you.

upfit

UPFIT

Engineered For Upfit

The X-Series was created with Truck Equipment Manufacturers (TEMs) in mind. We designed the truck to ease body upfit for every type of truck including dump trucks, cement mixers, cranes, and engineered it with features to make it fast and simple to access wiring and add controls. 

planetary axle

PLANETARY AXLE

Expanding Heavy Haul

Meritor P600 available in tandem or tridem configurations for heavy haul applications with GCWs of 200,000+ lbs.

doors

DOORS

Forged Steel Door Hinges

Internally mounted protection from the elements. Greater durability to prevent sagging -- a common problem with piano hinges.

roof

ROOF

Trench-style Low Roof

Composite roof with a lowered center section enables optimized packaging of overcab equipment, giving you a purpose-built vehicle that minimizes overall vehicle height while maximizing interior headroom and door opening.

uptime

UPTIME

Our Job Is To Keep You Doing Yours

Our X-Series trucks represent a big advancement in productivity for vocational trucks thanks to Detroit Connect®. Detroit Connect translates the performance data of any type of truck into real-time information you can use to make the decisions that can help you keep those trucks working and earning.

POWER HOOD

BUILT FOR TORQUE. DESIGNED TO STAND OUT.

Built for operators who need serious pulling power, the optional Power Hood on the Western Star 49X (available for set-forward configuration) is purpose-built to support larger radiator packaging for high-output engines, including DD15 and DD16. By accommodating the increased cooling demands of applications that require the highest gross combined weight limits, it delivers the performance needed for jobs ranging from heavy-haul, to oil field, and to severe-duty use cases - all while turning heads with its long and tall Western Star hood design. 

BEST-IN-CLASS

SAFETY

The safest and most advanced
truck we've ever built.

Detroit Assurance Suite of Safety Systems

The 49X is setting the vocational standard for safety and technology.

Introducing Detroit Assurance

Technology gets tough in the X-Series, the Western Star trucks to feature the most advanced suite of active safety systems ever offered to the vocational market — Detroit Assurance. Detroit Assurance not only helps keep people safe, it helps you reduce the repair and operational costs of having a truck out of service by avoiding collisions — which can mean game-changing productivity to you.

LEARN MORE ABOUT DETROIT ASSURANCE
Active Brake Assist 5

Active Brake Assist 5 detects distance and speed to moving and stationary objects in its path and determines if warning or braking is necessary. It's the only system on the market that works down to 5 MPH*, making it ideal for travel in congested urban areas. It also recognizes pedestrians who are about to cross in the truck's path, alerting the operator while partially braking, followed by full braking if the operator does not react.

* with DT12 Transmission

Side Guard Assist

A game changer for safety in and around busy jobsites, Side Guard Assist detects objects on the passenger side of the truck and alerts the operator.

Adaptive Cruise Control To 0 MPH And Tailgate Warning

Detroit Assurance technology enables state-of-the-art features such as Adaptive Cruise Control to 0 MPH* and Tailgate Warning to ease driving in stop and go traffic, as well as help reduce collisions as operators travel from one jobsite to the next.

* with DT12 Transmission

Brake Hold Mode

Brake Hold Mode enhances driver safety and comfort on the road and at the jobsite. This state-of-the-art feature keeps a truck* stopped when the driver removes their foot from the brake pedal, or if their foot unintentionally slips off.

* with DT12 Transmission

A windshield that makes it easy to see everything, including an advantage in safety.

  1. Field of Vision - enjoy exceptional visibility, thanks to one of the largest windshields in its class.

  2. One-piece Design - the single-piece, roped-in design enhances the field of vision with an unobstructed view, while providing easy replacement in case of damage.

  3. Solar Film - standard solar-tinted glass reduces heat in the cab, improving operator comfort.

  4. Wider Wiper Zone - 24-inch wiper blades that cross over the center of the glass create an expansive wiper zone, giving operators greater visibility.

  5. Heated Windshield - an optional integrated heating element helps to reduce snow and ice accumulation and rests directly beneath the wipers' resting location to prevent sticking.

Dual Stage Intelligent LED Headlights

  1. Impact Resistance - high-impact polycarbonate lenses with an additional hard coating to protect against cracking, scratching, and damage to the headlight from rocks or road debris.

  2. Heated Lens - optional dual-stage intelligent heat grids melt ice and eliminate condensation in minutes. 

  3. Integrated Amber DRL - daytime running lights double as turn signals, making X-Series trucks more visible to oncoming traffic.

  4. Wide Illumination - LED output is designed to fully illuminate the road, including off to the sides of the vehicle, to reduce eye fatigue and help operators detect objects sooner. 

Factory Installed Exterior Camera System

  1. Standard Backup Camera - all X-Series vehicles come standard with a relocatable backup camera mounted on the rear end of the frame (or top of cab backwall for tractor configurations).

  2. 360-degree Visibility - beyond the backup camera, operators can add up to 3 additional external cameras on the grille and the right and left sides of the cab, and all four views can be displayed simultaneously on the Interactive Touchscreen Display in the dash.

  3. Automatic Camera Toggling - the easy-to-use backup camera displays automatically when the truck is put in reverse, and side cameras display when corresponding turn signals are engaged.

  4. Relocatable Backup Camera - the backup camera can be placed at the end-of-frame for straight trucks or at the top of the cab for tractors, and if body equipment position requires relocation, the camera can be ordered with 10 additional feet of cable and repositioned as necessary.

LEVEL UP CAB LIFE

INTERIOR

Inside and Out, Your Western Star is Anything but Ordinary

 

When you’re behind the wheel of your X‑Series, the workday immediately feels easier. Western Star cabs are designed around the operator—featuring a wing dash layout, intuitive controls, and customizable trim options that work together to create a quieter, more comfortable, and more productive environment from the moment the door opens.

LEARN MORE

TAKE A WALKAROUND WITHOUT EVEN STANDING UP.

Experience a 360-degree view of the 49X with the options and color of your choice. It's the closest you can get until you're standing next to a real one.

Best-In-Class

SPECIFICATIONS

The 49X has all the options you need to build the truck you want.

1. X-Series steel-reinforced aluminum cab with X-Series steel door

2. Trench-style low roof with lowered center section for optimal packaging of over cab equipment

3. One-piece roped-in windshield

4. Optional impact-resistant and heated windshields available

5. Optional single or high-visibility three-piece rear window

X-Series Base

  • Mordura cloth seat
  • Vinyl sleeper upholstery
  • Standard insulation
  • Standard LED cab lighting
  • Black finish steering wheel switches
  • Black finish dash gauge bezels
  • Carbon with black trim accents

 

X-Series Premium

  • Laredo leather seats
  • Upgraded sleeper upholstery
  • Premium insulation
  • Premium LED cab lighting
  • Bright finish steering wheel switches
  • Bright finish dash gauge bezels
  • Premium teak trim

1. Quarry Grey

2. Charcoal Black

3. Timber Brown (available on Premium Package only)

1. Impact-resistant, durable, lightweight molded resin hood with sloped high-visibility design

2. ISO TECH Hood Suspension System

3. Standard with locking hood strut

4. Optional Power Hood for high horsepower needs in set-forward axle configurations

Radiator-mounted steel grille with stainless steel surround

1. Best-in-class HVAC with 5 face outlets, 4 floor outlets, 2 side window defrost outlets and 10 blower speeds

2. Available only on sleepers, optional Idle-Free Dual HVAC that provides up to 10 hours of cooling or 34 hours of heating when parked

Engine mounted air intake, plus optional hood-mounted pre-cleaner deliver improved dust capacity

1. Detroit® DD15®, 400-505 HP, 1550-1850 lb-ft

2. Detroit® DD16®, 500-600 HP, 1850-2050 lb-ft

3. Cummins X12, 350-500 HP, 1450-1700 lb-ft

4. Cummins X15, 400-605 HP, 1450-2050 lb-ft

 

Western Star provides a wide range of new vehicle engines compliant with EPA, CARB emissions, GHG, and OBD requirements.

Please consult your local dealer to ensure the selection of a product that meets your specific needs.

1. Detroit® DT12®-V and Detroit® DT12®-VX

2. Allison Automatic 4000, 4500, 4700

3. Eaton Fuller Manual 10- 13- 18-speed; 8LL and 9ALL

4. Eaton Endurant AMT 12- 18 speed

1. Intuitive and simple to use PTO control system that makes programming easy

2. FEPTO and REPTO available

3. Factory installed transmission PTO

1. Detroit® single 12,000-23,000 lbs

2. Detroit® tandem 36,000 and 40,000 lbs

3. Meritor single 12,000-22,000 lbs

1. Detroit® single 23,000 lbs

2. Detroit® tandem 40,000-44,000 lbs

3. Dana tandem 52,000-60,000 lbs

4. Meritor single 21,000-30,000 lbs

5. Meritor tandem 40,000-84,000 lbs

6. Meritor tridem 69,000-126,000 lbs

1. Flatleaf 14,600-23,000 lbs

2. Taperleaf 12,000-20,000 lbs

1. AirLiner® single 21,000-23,000 lbs

2. AirLiner® tandem 40,000-46,000 lbs

3. AirLiner® tridem 69,000 lbs

4. Chalmers tandem 40,000-70,000 lbs

5. Flatleaf single 23,000-30,000 lbs

6. Hendrickson tandem 40,000-52,000 lbs

7. Neway single 26,000 lbs

8. Neway tandem 46,000-52,000 lbs

9. Neway tridem 69,000-78,000 lbs

10. TufTrac tandem 40,000-52,000 lbs

1. WABCO® 4S/4M and 6S/6M Anti-lock Braking System (ABS) with and without traction enhancement

2. Air Disc Brakes

1. Detroit Assurance® suite of safety systems including: Active Brake Assist 5, Adaptive Cruise Control to 0 MPH, Side Guard Assist, Tailgate Warning, Lane Departure Warning, Automatic Headlights/Wipers and Intelligent High Beams, Brake Hold Mode, Traffic Sign Display and Active Speed Intervention, available with Detroit® engines

2. WABCO® OnGuard including collision mitigation and adaptive cruise control, optional with Cummins engines

1. Single-channel RBM @ 1.8-3.8MM inch-lbs

2. Inner C-channel reinforced RBM @ 4.4-5.5MM inch-lbs

3. 8"-30" parent rail front frame extensions options available

49X offers three bumper styles in various finishes and thicknesses, as well as a boxed-in bumper with an optional grille guard for logging applications. All 49X bumpers are tapered at the wheel ends for ground clearance and weight savings
  • Standard 1/8" stainless steel vocational
  • Optional 3/16" painted steel
  • Optional 1/4" plain or polished aluminum
  • Optional 5/16" bright steel severe service
  • Optional 3/8" painted steel severe service
  • Optional 1/4" painted or bright steel logger

There are a number of towing device options mounted directly to the front frame head for increased strength and durability, with ratings from 80,000-140,000 lbs
  • Dual Removable Tow Hoops, 80,000 lbs
  • Center Tow Pin, 80,000 lbs
  • High Capacity Center Tow Pin, 140,000 lbs

1. Aluminum 25" cylindrical, plain or polished

2. LH 60-150 gallon (227-568 liter)

3. RH 60-, 70-, 80-, 100-, 120-, 150-gallon (227-, 265-, 303-, 379-, 454-, 569-liter)

4. Standard forward mounting; optional aft mounting

5. LH and RH split fuel/hydraulic tank options available

6. LH and/or RH auxiliary fuel supply and return ports available

1. 8-, 13- and 23-gallon (23-, 49- and 87-liter)

2. Standard forward mounting

3. Optional LH or RH aft mounting

All-new QuickFit Interface System

1. Easier to integrate truck equipment with the vehicle's electrical power and communication sources

2. Advanced multiplexed electrical system for easy Truck Equipment Manufacturer (TEM) interface, programming and power access

3. Auxiliary in-cab backwall mounted E-Vault available, which houses:

  • QuickFit Programmable Modules
  • QuickFit Programmable Interface Connector
  • TEM-specific power distribution module
  • High-current power access
49X

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