how many outlets should it have 2 or 4? i want it too fit my g40 so how many does it need too have? as i,ve found one with 2 outlets and one with 4

Just to confuse you, mine has 3. It's from a Passat though. If you get one with 2 outlets, just use a T piece.

The one on my G40 has four outlets but I only use three. I bunged t'other one up by filling a brake pipe fitting with solder but you can also buy bungs for them.

I bought mine from GSF and it came with a bung to fill the 4th hole.

you need 3 as above, i used a brake bleed nipple to plug the other hole up!