Current Autocar ACX®

2026 Autocar ACX® 6X4

2026 Autocar ACX® 6X4

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Exterior Colors:

  • Year 2026
  • Make Autocar
  • Model ACX®
  • Engine Cummins 2021 L9 rated from 300 hp to 380 hp | Cummins 2021 X12 rated from 350 hp to 500 hp | Cummins L9N (natural gas) rated from 300 hp to 320 hp | Cummins ISX12N (natural gas) rated at 330 to 350 hp
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2026 Autocar ACX® 6X4

2026 Autocar ACX® 6X4

  • Year 2026
  • Manufacturer Autocar
  • Model Name ACX®
  • Trim Name 6X4
  • Generic Type (Primary) Conventional without Sleeper
  • Engine Cummins 2021 L9 rated from 300 hp to 380 hp | Cummins 2021 X12 rated from 350 hp to 500 hp | Cummins L9N (natural gas) rated from 300 hp to 320 hp | Cummins ISX12N (natural gas) rated at 330 to 350 hp
  • Exhaust Diesel: Horizontally mounted SMA (single module aftertreatment) with LHVE (left hand vertical exhaust) | Horizontally mounted SMA (single module aftertreatment) with RHVE (right hand vertical exhaust) | Gas: Horizontally mounted 3-way catalyst on BOC with LHVE (Left hand vertical exhaust) | Horizontally mounted 3-way catalyst on BOC with RHVE (Right hand vertical exhaust) | Horizontally mounted 3-way catalyst on BOC with RHUFE (Right hand under frame exhaust) (CNG only) | Horizontally mounted 3-way catalyst on frame rail with RHUFE (Right hand under frame exhaust) (L9N only)
  • Cooling Electrical operated cooling fans - CNG available, Diesel to be released in 2021
  • Air Cleaner 15 inch single stage EPG | 15 inch single stage with safety element EPG | 16 inch 2 stage

2026 Autocar ACX® 6X4

Severe Duty Cabover

Custom built for durability, power, and performance, the ACX has been trusted by professionals for decades. Whether it’s picking up refuse or pumping concrete, this workhorse is relentless and built to last.

Features may include:

  • Galvannealed Steel Cab
  • Is more robust than aluminum featuring two-sided galvanized steel. Its rivetless construction requires less maintenance.
  • B-Pillar Windows.
  • Maximizes visibility and safety. Contributes to 324.5 degree visibility from driver's seat (that's 90% of 360) Removable for easy, quick maintenance.
  • Roomiest Available Cab
  • Visibility, comfort, and durability make the ACX the preferred severe-duty workspace. Autocar offers a severe service cab with all-welded steel construction for strength, weight savings, and driver safety
  • Adjustable Steering Wheel
  • Tilt and reach- adjustable allows for easier operation and more belly room
  • Righthand Drive Options
  • Available in Right-hand Stand-up (RHS) and Standard door layouts and four different driving configurations
  • Constant Torque Clamps
  • Vibrationless constant torque clamps keep connections secure, prevent wear and tear. Avoid mishaps and wasted time on route. Makes electronics and engine maintenance easier. Reduces costs and damage liability. Avoids downtime as well.
  • Clips and Hangers
  • Keep wiring from rubbing against the frame, helping prevent electrical shorts

Engine

Engine Cummins 2021 L9 rated from 300 hp to 380 hp | Cummins 2021 X12 rated from 350 hp to 500 hp | Cummins L9N (natural gas) rated from 300 hp to 320 hp | Cummins ISX12N (natural gas) rated at 330 to 350 hp
Exhaust Diesel: Horizontally mounted SMA (single module aftertreatment) with LHVE (left hand vertical exhaust) | Horizontally mounted SMA (single module aftertreatment) with RHVE (right hand vertical exhaust) | Gas: Horizontally mounted 3-way catalyst on BOC with LHVE (Left hand vertical exhaust) | Horizontally mounted 3-way catalyst on BOC with RHVE (Right hand vertical exhaust) | Horizontally mounted 3-way catalyst on BOC with RHUFE (Right hand under frame exhaust) (CNG only) | Horizontally mounted 3-way catalyst on frame rail with RHUFE (Right hand under frame exhaust) (L9N only)
Cooling Electrical operated cooling fans - CNG available, Diesel to be released in 2021
Air Cleaner 15 inch single stage EPG | 15 inch single stage with safety element EPG | 16 inch 2 stage

Performance

Fan Speed 2-speed fan drive | On/Off fan drive | Variable speed fan drive

Drivetrain

Drive Shaft Dana Spicer® half-round, yoke size 1710, 1760 or 1810 dependent on transmissions and driveline rotational speeds
Transmission Model: Allison 3000 RDS (not available with X12 or ISX12N) | Allison 4000RDS | Gearing: 5 or 6-speed | Controls: Allison push button | Cooler: Remote mounted oil to coolant layered core oil cooler | Lubricant: TES 295 Allison approved synthetic auto trans fluid
Drive System Cab drive configuration: Single LH drive | Single RH drive | Dual drive dual sit | Dual drive RH standup | Single LH drive RH standup
Dynamic Power Steering Sheppard M100PPV3 with assist ram
Axle Bearing Extensions, Front Model: Meritor MFS-20 | Meritor MFS-18 | Meritor MFS-16 | Dana D-2200W | Hendrickson Steertek 20K
Axle Bearing Extensions, Rear Model: Meritor MT40-14X | Meritor MT40-14X with 1/2 inch housing | Meritor MT44-14X | Meritor MT46-160 | Meritor MT46-164 EH | Meritor RT52-185 | Rear axle ratio: 4.89 to 6.14 Dependent on axle model, vehicle configuration and application
Steering Wheel: 16 or 18 inch diameter

Brakes

Front braking system Meritor 16.5 x 6 QP | Meritor 16.5 x 7 QP | Meritor 16.5 x 7 SSQ | Meritor EX225H2 air disc
Rear braking system Meritor 16.5 x 7 QP | Meritor 16.5 x 7 QS | Meritor 16.5 x 8.62 QP | Meritor 16.5 x 8.62 SSQ | Meritor 16.5 x 7 BGS | Meritor EX225H2 air disc

Suspension

Front Suspension 7,500 lb Flat leaf rated at 16,500 lb capacity | 8,500 lb Flat leaf rated at 18,800 lb capacity | 9,500 lb Low camber flat leaf rated at 20,800 lb capacity | 10,100 lb Flat leaf rated at 22,000 lb capacity | 10,200 lb Taper leaf rated at 22,000 lb capacity | Hendrickson 20K taper leaf front suspension (Only available with Steertek axle)
Rear Suspension Haulmaax HMX-EX 400 at a 54 inch axle spread, rated at 40,000 lb capacity | Haulmaax HMX-EX 460 at a 54 inch axle spread, rated at 40,000 lb capacity | HN522 at a 54 inch axle spread, rated at 52,000 lb capacity | Primaax EX-462 Air Ride at a 54 inch axle spread, rated at 46,000 lb capacity

Dimensions

Wheelbase Available in 3 inch increments between 144 inch and 264 inch

Chassis

Frame Type 3/8 inch Variable drop rail, 120 kPsi heat treated steel, RBM of 3,259,000 lb. in to 4,220,000 lb. in dependent on drop configuration and liners

Cab

Cab Construction The cab is constructed from corrosion-resistant steel followed by a Cathodic Electrocoat dip process before the top coat is applied
Mirrors Black or chrome plastic housing with dual pane mirrors. Options include power adjustment, heat and integrated marker lights
Towing Capacity Device: Two tow pins integral with front crossmember

Features

Features Radiator: 1300 sq. inch aluminum , 1118 sq. inch bar plate | Coolant hoses/piping: Silicone hoses with constant tension clamps | Coolant: Extended life coolant | Heavy-duty front end: Available for severe duty service applications such as snow plowing| Cab climate control system: 30,000 BTU air conditioner with heater | Cab doors: Steel doors with power or manual crank window regulators | Aluminum fold-up doors for stand-up and low entry options
Seat Type Driver seats: National Cush II low back air ride | Sears C2 air ride | Sears C2+ air ride | Sears C2+ air ride with air lumbar support | Sears C2+ air ride with air lumbar support and headrest | Various Bostrom selections | Passanger seats: Fixed type low back | Sears C2 fixed or air ride | Sears C2+ fixed or air ride | Sears C2+ air ride with air lumbar support | Sears C2+ air ride with air lumbar support and headrest | Various Bostrom selections

Product Photography