The letters of diesel filter element are pl and es. What do you mean?

There is no uniform standard for 490 diesel oil filter element, and each manufacturer has its own model. For example, WB202E is used for the oil filter of faw liberation Xichai 490 diesel engine. The model of oil filter for Yunnei 490 engine is 08 10Y. The model of oil filter element used in Chai Quan 490 diesel engine is 08 10d 1. So you should choose the corresponding oil filter according to the engine assembled by your car.