P C Industries Quality Commitment Experience Satisfaction

sales@powerlinecomponents.com
International: 1-307-885-4724
US (Toll Free): 877-885-4724

Back to Detroit Diesel Engine Information

Series 149 Model Description Chart, Serial # Location, Application, Rotation, & Design Variations

91 22-700 0
Series 149# Of
Cylinders
Application
Designation

(see below)
 Basic Engine
Arrangement

(see below)
Design
Variation

(see below)
Specific
Model #
Application Designations
  • 9122 - 7000 Marine
  • 9123 - 7000 Industrial Fan thru Flywheel
Design Variations
  • 9122 - 7000 Non-Turbocharged Engine
  • 9122 - 7300 Turbocharged, Intercoolers Optional
  • 9122 - 7400 Turbochargers, Intercoolers, Bypass Blowers
  • 9122 - 7C00 DDEC Engine Controls
  • 9122 - 7K00 DDEC Engine Controls

Basic Engine Arrangements
Rotation: L (left) & R (right) designates rotation as viewed from the front of the engine.
Cylinder Banks: Left & right cylinder banks are determined from the rear of the engine.

ALL VIEWS FROM REAR (FLYWHEEL) END OF ENGINE

The unit serial # & model # of 8V engines are stamped on the rocker cover rail at the left, rear corner of the block (as viewed from the flywheel end). The unit serial # & model # on 12V, 16V & 20V engines are stamped on the rocker cover rail at the right, front corner of the block (as viewed from the flywheel end).

An example of a Series 12V149 serial # is 12EXXXXXXX. The engine serial # is required when placing a parts order.

Model # 9122-7000 is interpreted as follows: Series 149 Engine (9), twelve cylinder (12), marine engine (2), right-hand rotation with "C" accessory arrangement (7), non-turbocharged engine (0), & specific model variation Number 00 (00).

1. Engine Model Number
2. Engine Serial Number