Peterbilt 337

PETERBILT MEDIUM-DUTY MODEL 337

So you want to know what makes up the 337? Read the full truck specifications, including fuel exhaust, axles, lighting and aerodynamics.

Powertrain, Drivetrain & Exhaust

Engine

PACCAR PX-9 260-380 hp
PACCAR PX-7 200-360 hp

Transmission

  • Fuller Manual
  • Fuller Automated
  • Allison Automatic

Exhaust

  • Vertical Cab Mounted
  • Horizontal

Exhaust Guards

Vertical Stainless Steel

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

HOOD

  • 108" BBC Metton

Bumper

  • Steel Stylized Aerodynamic
  • Steel Swept Back
  • Aluminum Channel

Wheels

Aluminum 19.5" / 22.5"
Steel 19.5" / 22.5"

Tires

  • Bridgestone
  • Goodyear
  • Michelin

Fuel Tanks

Steel 45 gallon
23" Aluminum 50-100 gallon
26" Aluminum 50-90 gallon

Cab

Cab

  • Aluminum

Seats

Driver Peterbilt UltraRide
  Atlas 70 & 80
  Rolltek
Passenger Peterbilt UltraRide
  2 Person
  Atlas 70 & 80

Battery Box

  • Steel
  • Aluminum

Tool Box

  • Optional

Frames, Axles & Suspensions

Frame

Steel 10 5/8" / 10 3/4"

5TH Wheels

  • Holland
  • Jost

FRONT AXLES

Dana Spicer 8-13K lbs.
Fabco 10-13K lbs.
Marmon-Herrington 12 lbs.

Front Springs

  • Taper Leaf

Front Hubs

  • Iron LMS
  • Aluminum LMS with Air Brakes
  • Iron with Hydraulic Brakes
  • All-Wheel Drive

REAR AXLES

Dana Spicer Single – 17-23K lbs.

REAR SUSPENSIONS

Peterbilt AirTrac
  Low Air Leaf
Reyco  

REAR HUBS

  • Iron

Front Brakes

Air Drum  
Hydraulic Disc  

Rear Brakes

Air Drum  
Hydraulic Disc  

ABS SYSTEM

Bendix 4S4M Air
Meritor Wabco Hydraulic

Other

Quarter Fenders

  • Black Molded
  • Stainless Steel

Air Cleaner(s)

  • Under Hood

Air Dryers

  • Bendix

Air Tanks

  • Steel
  • Aluminum

Chassis Hose

  • Nylon

Air & Electric Mounting

  • Optional
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Signature Peterbilt Grille