“Isuzu Smart Tip” in Ordering Service Parts
When ordering parts for your Isuzu diesel engine, it is best to reference the engine model and serial number. This information, paired together, contains the engine build listing of parts originally installed on your Isuzu engine at the time of manufacture. Click on the Isuzu Diesel Engine Model Serial Number Guide for specific reference information.
Isuzu uses “spec codes” to determine the components that make up that particular engine. There should be a tag on the valve cover like the one in the picture below, that tells us the model of the engine and the “spec code”. This one shown is a 4LE1 model with a “spec code” of PW-01. The two letters / two letters gives us the date code of the manufacture of the engine. This is helpful when there is a production change on a part within the engine by date of manufacture. It is helpful to us to insure that we provide you with the correct part when there was a production change in parts within an engine. If the tag is missing or unable to be read, then we can determine the “spec code” from the engine serial number. Information about where to find that is listed below…
(Click the picture to view a larger image of the tag on the valve cover )
| ISUZU ENGINE MODEL DISIGNATION | SERIAL NUMBER LOCATION |
|---|---|
| 3CB1
3CD1 |
Left side, lower center of block between front engine mount and starter |
| 3YA1
3YC1 |
Right side of block above injection pump. |
| 2KC1
3KC1 3KR1 |
Right front, on injection pump mounting flange |
| 2AB1
3AB1 |
Right front, top part of the cylinder block. |
| 3LA1
3LB1 3LD1 3LD2 4LB1 4LC1 4LE1 4LE2 |
Right front, top part of cylinder block. Between 1s injection pump and front cover. |
| C240 | Left front, top part of the cylinder block. |
| 4JA1
4JB1 4JC1 4JG1 4JG2 |
Left rear, top part of cylinder block. |
| 4BB1
4BC2 4BD1 |
Left front, top part of cylinder block. |
| 6BB1
6BD1 6BD1T 6BG1 6BG1T |
Left front, lower part of the cylinder block. |
| 6HK1 | Right front, top part of cylinder block below number one exhaust port. |
| 6SA1
6SA1T |
Left rear, top part of the cylinder block. |
| 6SD1
6SD1T |
Left center, lower part of cylinder block. |
| E120
E120T 6RB1 6RB1T |
Right side of the cylinder block, below the injection pump and to the rear of the oil filter. |
| 6WG1 | Left front, top part of the cylinder block in front of the injection pump. |
NOTE: ALL SERIAL NUMBERS ARE STAMPED AND CONSIST OF SIX (6) NUMERICAL DIGITS. All directions are as viewed from the flywheel end of the engine. The Engine Model is cast on the side of the block or located on the ID tag, which is found on the valve cover.