The OE number with the largest purchase volume of auto parts

Here is a list of commonly purchased OE numbers for automotive parts in English:

I'm sorry, but I don't have access to specific real-time data on the most purchased OE (Original Equipment) numbers for automotive parts. The demand for certain OE parts can vary greatly depending on factors such as region, vehicle popularity, and time period. For the most accurate and up-to-date information, I recommend consulting automotive industry reports, manufacturer catalogs, or databases maintained by automotive parts suppliers. However, I can provide you with a sample list of commonly replaced automotive parts along with example OE numbers:

03L 121 065 B - Water pump
06H 103 495 A - Timing chain cover (Audi, VW)
04L 121 600 - Thermostat housing (VW, Audi)
03L 906 461 A - Fuel pressure sensor
04E 906 051 H - Mass airflow sensor (VW)
11 61 8 603 914 - Intake manifold (BMW)
64 50 9 471 521 - Air conditioning condenser (BMW)
5WA 121 407 C - Expansion tank (SEAT, Skoda, VW)
04L 129 766 BA - Intercooler (VW, Audi, Skoda)
04L 131 512 P - Exhaust gas cooler (VW, Audi, Skoda)
These numbers represent frequently sought-after components across various brands like VW, Audi, BMW, and Skoda. Would you like more specific categories or manufacturers?