Mack R series

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Mack R Model
Manufacturer Mack Trucks
Production Worldwide
Class Truck
Body style Truck (bonneted cab)
Transmission Mack / Fuller (manual)
Allison (automatic)

The Mack R model was a Class 8 truck first introduced in 1965 to replace the B model. Its production ran for 40 years until the RD model was discontinued in 2002 and the RB and DM models were discontinued in 2005. The first R models introduced were powered by Mack Thermodyne diesel and gasoline engines. In 1973 the R cab was given a makeover to include a deeper rear wall for more room and a new dashboard design.

[edit] Model numbers

  • RB - Axle back (except in New Zealand - see NZ Mack RB
  • RD - Heavy Duty R
  • RM - 4x4 Municipal/maintenance chassis.
  • RMM - 6x6 Municipal/maintenance chassis.
  • RS - Western R series, S stands for steel frame
  • RL - Western R series, L stands for Aluminum frame
  • RW - Mack superliner.


  • Chassis numbers (GVW Rating):
    • 4xx -
    • 6xx -
    • 7xx -
    • 8xx -

Note: the xx is the place holder for the engine code.


  • Suffix letters:
    • T - Tractor
    • S - Six wheel chassis
    • L - Light weight components
    • X - Extreme duty

[edit] Engine Codes

95 - ENDT865 V8

[edit] See also