Bosch rail pressure sensor 0281006035 / 0281006404 (Hyundai Kia diesel CRDi)
These two numbers refer to interchangeable common rail pressure sensors of the same platform, suitable for Hyundai / Kia 2.0/2.2/3.0L CRDi diesel engines. 

I. Parts and Interchange Information
0281006035 (Standard)
Corresponding to Hyundai / Kia OE: 31401-2F000
0281006404 (Upgrade Version / Alternate Number)
Corresponding to Hyundai / Kia OE: 31401-2F600
Both have 3-pin and 2200bar range. The plugs / threads are exactly the same and can be directly interchanged.
II. Compatible Vehicle Models (2.0/2.2 CRDi are the main types)
Hyundai (Hyundai)
Santa Fe (Santa Fe) 2.0/2.2 CRDi
Tucson (Tucson) 2.0 CRDi
Sonata (Sonata) 2.0 CRDi
Sedona (Sedona) 2.2 CRDi
Kia (Kia)
Sorento (Sorento) 2.0/2.2 CRDi
Sportage (Sportage) 2.0 CRDi
Carnival (Carnival) 2.2 CRDi
III. Installation and Fault Indicators
Installation Position: One end of the common rail pipe, M18×1.5 thread, 3-pin plug.
Common Faults:
Starting difficulty, acceleration weakness, idle instability
Fault Codes: P0189, P0190, P0191 (Rail Pressure Abnormal)
Replacement Recommendation: Prefer 0281006404 (Updated Batch), which can directly replace 0281006035.