Sedra 3500 NW Impeller

[falconut]

Does anybody know if the standard 3500 impeller has the same magnet as the 3500 needlewheel impeller?

I've got two Sedra 3500 pumps and know all about the magnets swelling. My current impeller is starting to swell. I've only got 1 that's good right now. I've got extra shafts and Impellers, just need the magnet.

When I was looking at the impellers, I saw the Sedra 3500 (non NW) for $14.99, while the Sedra 3500 (NW) is $34.99. The magnets appear the same, has anybody tried it?

Here's the link: http://www.fishsupply.com/sedrapumpparts.html