Spot the difference. New metal.

Does the one on the left have a plastic impeller?😮

They both do. Not much wear on the old one but considering the price rather than inspect it, I replaced it.

Oh man, and I nearly went goggle eyed looking for the difference.

I did a water pump replacement last month. You buy the external pulley wheel half from Europarts, use the new gasket that comes with it, and bolt it to the old half. Joe gave me a lot of help so check my posts, especially for the pic showing where to put the long bar to slacked the aux belt. Suggest you replace that at the same time, after disconnecting all those hoses. Not a difficult job, though, (can't be if I did it). There is a good film on You Tube as well. Before you take the belt off. do a sketch of how it goes round the pulleys. Will save you hours at replacement. Best of luck.

The serpentine belt is easy, that's the second time I've removed it.