KIT KIT KIT!
Includes 3 parts in photo.

Oil Trap, Breather Box, Oil Separator membrane service kit for
Volvo models P1 and P3, with 5 cylinder gasoline fuel injected engines. There is a diaphragm installed on the top of the oil separator breather box assembly of the 5 cylinder P1 and P3 cars. When the diaphragm is ruptured and torn it results in loud squeal noise from the engine, lack of power, rough idle at slow speeds , and engine stalling at intersections.

You absolutely do not have to disassemble one half of the vehicle and install a new complete oil separator box to remedy the problem. You can only replace the damaged part of the oil separator. The replacement procedure calls for a simple removal of the plastic cover, membrane and the spring and installing what we are providing.
This diaphragm fits on the top of the oil separator with the part number 31338685 on the top cover

For all P3 five cylinder Turbo S60, V60, XC60 V70 and P1 five cylinder C30 C70 S40 V50 from engine 3285662-