"Air-kit" Volvo Penta 31-41 A-B motorerna

Let your engine breathe and save on changing the crankcase filter at every service and get your engine running more smoothly.

With this "Air-kit" you move the crankcase ventilation outlet to the valve cover.

This upgrade is available on newer versions of the 31-41 engine, eg the "P" engine which stands for "plessure" which has, among other things, better performance.

Workshop:

In order to do this upgrade at a repair shop, it is necessary to change one of the valve lifter covers on which the crankcase filter sits.

This cover sits under the intercooler so disassembly of the intercooler and a new cover without connection must be fitted including studs and screws.

A cost that takes about 2-3 hours to perform + materials at a workshop.

Do it yourself:

We at Sweden parts have developed a simpler version of the upgrade that you can easily assemble yourself in a few minutes.

Instead of dismantling the intercooler etc., a specially made plug is used to facilitate the work.

Do this:

Unscrew the crankcase filter (876069) and plug the hole with our specially made plug.

Replace the 1st 2nd or 3rd valve cover with the new upgraded valve cover with oil trap.

Mount the hose and route it down the side of the engine.

Engine problems :

The engine has problems with the crankcase filter clogging (leaking oil around the filter) or letting oil mist through which then sticks and clogs the air filter (black filters) and also the intercooler if you are unlucky.

(The engine becomes sluggish and can emit heavy black smoke as it does not get air as it should)

The new valve cover has an oil trap which means that the oil mist remains in the engine and only crankcase air comes out of the connection on the valve cover

The insert in the valve cover is completely maintenance-free and never needs to be replaced.

The new valve cover is aluminum and needs to be painted.