Tech Tip #186: Isuzu Industrial Diesel Engine Serial Number Location

Dr. Diesel
Written by Dr. Diesel

This Tech Tip is a number we publish regarding industrial engines. While most have focused on Perkins, Deutz, Wisconsin and other industrial engines, this one focuses on a new engine brand for us, Isuzu industrial engines. Many engine pros have complained about the difficulty they have in ordering Isuzu industrial engine parts.  This Tech Tip, similar to one on how to find the Perkins engine serial number (Tech Tip #20 : Perkins Serial Numbers), shows you where to find the engine serial number on an Isuzu industrial engine.

Ordering parts for Isuzu industrial engines can be difficult because everything is based on the Isuzu industrial engine’s serial number. But Foley can help. We have listed below the location of the all-important serial number. Please note that this list DOES NOT include information about the on-the-road Isuzu truck engines. Foley Engines only supports Isuzu industrial engines used in off-road applications.

 
Isuzu Model Designation Serial Number Location

2CA1

Left side, lower center of block between front engine mount and starter.

3YA1
3YC1

Right side of block above injection pump.

2KC1 – QT-15
– QT-23
3KR1 – QT-35

Right front, on injection pump mounting flange.
2AB1 – QD-27
3AB1 – QD-40
Right front, top part of block.

3LA1
3LB1
3LD1 / 2
4LB1
4LC1
4LE1 / 2

Right front, top part of cylinder block.  Between the first injection pump and front cover.
C240 – QD-60 Left front, top part of cylinder block.
4JA1 – QD-63
4JB1 – QD-70
4JC1 – QD-55
4JG1 / 2
4JJ1
Left rear, top part of cylinder block.
4BB1 – QD-90
4BC2 – QD-85
4BD1 – QD-100
4BG1
Left front, top part of cylinder block.
6BB1- QD-130
6BD1 – QD-145
6BF1
6BG1 – QD-165
Left front, lower part of cylinder block.
4HK1 Right center, lower part of cylinder block.
6HK1 Right front, top part of cylinder block below number one exhaust port.
6SA1 – QD-170 Left rear, top part of cylinder block.
6SD1 – QD195 Left center, lower part of cylinder block.
6UZ1 Left center, lower part of cylinder block.
E120 – QD-200
6RB1 – QD-250
Right side of cylinder block, below injection pump and to the rear of the filter.
6WG1 Left front, top part of cylinder block in front of injection pump.

Note: All directions are as viewed from the flywheel end of the engine.  All serial numbers are stamped and consist of six numerical digits.  Engine Model is cast on the side of the block and/or located on the identification label, which is found on the valve cover.

Dr. Diesel
Written by Dr. Diesel
Knowledge is power. Power to build ties to engine users. To build a relationship with our customers, we share with you our 104 years of knowledge in many ways. We have this special section called “Ask Dr. Diesel™” where you can pose questions about engines, transmissions, industrial hand clutches, exhaust scrubbers, etc.
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