B-4 ? Is this motor type ?

Okay… Simple question to answer. Right above my exhaust manifold(I think that is what it is called lol) on the left there is a small box with E-4 stamped. Is this this the motor type ?
on the right side it says ..Pk2
I was just wondering if this is my motor type.
If not were about do i have to look. Down more up more ?
Thanks