1、Applicable Models: Oil pump is compatible for CS3050 CS3400 CS3450 GC34 CS340 CS341 CS345 CS346 chainsaw. Replace OEM is for 43700239130. 2、Aluminum and Iron: The oil pump is made of excellent aluminum and iron materials, which make the product more durable, wear resistant, long service life. 3、Closely Fitting: The oil pump can closely fit the original machine with professional manufacturing, exquisite craftsmanship and high accuracy. 4、Stable Performance: The oil pump can effectively prolong the service life of the machine, with stable performance, help to provide the best performance. 5、Easy to Install: The oil pump is easy to install and replace, and the old one can be replaced directly, perfect accessory for garden tools.