1、OE Number: The referencing OE number of this diesel hand primer pump are 2447222126, 2447010038, 2447010039, which is molded and designed depend on the original data. 2、Fitment: The primer hand pump is a replacement for Mercedes‑Benz W110 W116 W123 W126, replacement for Isuzu, replacement for Navistar. 3、Function: When there is no oil or air is entered, the hand pump can be pressed to pump the oil, so that the oil is continuously supplied during operation. 4、Premium Material: The fuel pump is made of high strength metal and ABS plastic material, which is wear resistant, impact proof, anti aging and durable. 5、Easy to Install: Stringently manufactured to meet the original standard, perfect replacement for the old or broken one, improving the time efficiency.