Peterbilt 320

PETERBILT VOCATIONAL MODEL 320

So you want to know what makes up the 320? Read the full truck specifications, including fuel exhaust, axles, lighting and aerodynamics.

Powertrain, Drivetrain & Exhaust

Engine

  • Cummins ISX12
  • Cummins Westport ISL G
  • Cummins Westport ISX12 G
  • PACCAR PX-9
  • PACCAR MX-11

Transmission

  • Fuller Manual
  • Allison Automatic

Exhaust

Vertical Single

Exhaust Guards

Vertical Stainless Steel

Hood, Bumper, Wheels, Tires & Fuel / Def Tanks

HOOD

  • N/A

Bumper

  • Steel Painted
  • Chrome Painted
  • Aluminum Polished

Wheels

Aluminum 22.5" / 24.5"
Steel 22.5" / 24.5"

Tires

  • Bridgestone
  • Goodyear
  • Michelin

Fuel Tanks

23" Aluminum 50-120 gallon
26" Aluminum 50-150 gallon

Cab & Sleeper

Cab

Steels Structure with Aluminum Skin
and Fiberglass Roof

Sleeper

  • N/A

Seats

Driver Peterbilt
  Sears
Passenger Peterbilt
  Sears
  2 Person

Battery Box

  • Aluminum
  • Steel

Tool Box

  • Optional

Frames, Axles & Suspensions

Frame

Steel 10-3/4"

5TH Wheels

  • Holland

FRONT AXLES

Dana Spicer 12-20K lbs.
Meritor Single – 12K lbs.
  Tandem – 36K lbs.

Front Springs

  • Taper Leaf

Front Hubs

  • Iron
  • Aluminum

REAR AXLES

Dana Spicer Single – 21-30K lbs.
  Tandem – 40-60K lbs.
  Tridem – 69K lbs.
Meritor Single – 21-23K lbs.
  Tandem – 40-46K lbs.
  Tridem – 66K lbs.

REAR SUSPENSIONS

Peterbilt Air Leaf
  Low Air Leaf
  Air Track
Reyco 79KB
  102AR
  102
Hendrickson RT
  HMX
  HN
Chalmers 854
Neway  

REAR HUBS

  • Iron
  • Aluminum

Front Brakes

Air Disc  
Air Cam Drum  

Rear Brakes

Air Disc  
Air Cam Drum  

ABS SYSTEM

Bendix 4S4M
  6S4M
  6S6M Air

Other

Quarter Fenders

  • Black Molded
  • Stainless Steel

Air Cleaners (Single)

  • Single Back of Cab

Air Dryers

  • Bendix

Air Tanks

  • Aluminum
  • Steel

Chassis Hose

  • Nylon
  • Wire Braid

Air & Electric Mounting (Optional)

  • End of Frame
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Signature Peterbilt Grille