Originally Posted by veedubfreak
My Swiftech branded 655s are going on 6 years old at this point with no issues. I recently put them in a bitspower dual pump top as I combined my loops into 1 big loop and they had no such warranty stickers. /anecdote
As mentioned above, Swiftech changed their warranty policy on their pumps just a couple years ago.
FWIW here's Swiftech's rep discussing their warranty policy on their pumps recently ...
Originally Posted by BramSLI1
What the warranty basically states is that if you use a third party housing you're basically voiding your warranty on our pump. The issue stems from manufacturers producing tops that cause the pump to operate outside of Laing's specified design parameters. Due to this we can't honor our warranty if the pump has been disassembled and used with a third party top.
Our own tops are a different story. We adhere very closely to Laing's specified design parameters and therefore use of our pumps with our own tops won't void your warranty. The exception to this is if the top is improperly installed. If you cross-thread the screws or end up cracking the top due to applying too much force, this will also void our warranty. If our top leaks though, that's on us. I won't have any problem issuing an RMA for a pump that leaked after one of our own tops was installed on it properly. In fact, I've done this a couple of times when we had a bad batch of MCP35X2 pump tops that didn't sit properly on the pumps.
I get why they did it, but not so sure their blame on other's pump tops isn't misplaced.
In any case it doesn't change the fact that you can buy the exact same Laing pumps from Aquacomputer, Alphacool, XSPC, Koolance, etc instead of Swiftech, often for less cost, and none of the others have any warranty issues with you disassembling the pump to inspect or clean it or using any pump top you want with it. Unless it's on sale for some ridiculous discount, there's just no good reason to buy a pump from Swiftech any more imho.