Once you find that stamped 4HK1 number, write it down in your owner’s manual. You’ll thank yourself later.

On the 4HK1, the high-pressure common rail fuel pump is mounted on the front left side of the engine. Look for a silver, multi-line pump driven by the gear train.

4HK1 - 1234567

Let’s cut the confusion. Here is exactly where to find the 4HK1 engine number.