I would play it safe and go for a metal one.

May cost a little more, but if the plastic one goes then its basically another cambelt strip-down.
 
I've spoken to some people who say the metal one has never existed, it has always been plastic just the new ones are harder plastic
 
VW never changed from plastic..
after market ones were somtimes metal depending on who they bought from

so say, latest VAG ones are an improved, but still plastic design. I can say they look just the same construction to me, but maybe the grade of plastic this time is better.. only time will tell

badgerwagen runs a metal one however.
 
I just had a metal on fitted. Was a tad more expensive.

My mechanic explained the big design flaw in the nylon vs metal. Seemed like they really dropped the ball when they designed the originals.

He showed me my plastic one when I picked teh car up, the impellor was all cracked where it connects to the spindle where it had heated up and expended.
 
Mine was metal too, got it from seremotors on here.

Here is my broken plastic one

pump.jpg
 
I had my water pump and cambelt changed by a dealer and at the time I was in a similar situation. I asked the steamer to source and fit a metal one but they said couldn't source one and it wouldn't be covered by them if it went wrong. So ended up with the plastic one they recommended.
They also said that yes the plastic one could fail but wouldn't cause as much damage as a metal one failing.
That doesn't mean to say I've heard of a metal one failing.
 
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thanks for the reply..
yeah i got plastic too.. i guess if the car does 60k before its changed with plastic, then its good for another 60k ish :)
 
i fitted the metal one myself, it was a 3rd party product,


the metal impellor will not physically break, if anythings to go on a waterpump barring the plastic version it'd be the seal or phospor bushing, which if seized would strip your cambelt anyways,

i wouldnt personally worry about it, a lot of water pumps are plastic impellored, a big factor that causes an impellor is the incorrect anti freeze mix in the winter, in which the coolant can freeze and causes damage once the engine is fired up, = bang dead waterpump