This item works, but has one small flaw.
The big bolt on top will break the housing every time during install (this is the last bolt to be tightened, after the small bolts).
Reason being, the gasket is thicker & stiffer than usual & this creates a larger than usual gap between the housing & head.
When the big bolt is being tightened the new gasket will not crush easily, so it creates a sort of fulcrum point & puts a strain on the top of the housing, causing it to snap & create a hairline fracture.
I am on my 2nd housing & have remedied this issue, by epoxying the housing to repair the hairline fracture & also using a thin copper washer (held by a dab of silicone) between the head & housing where the big bolt goes.
This fills the gap enough & allows the housing to contact the head sooner thus minimizing the chance of breaking the housing.
This has worked for me thus far without leaks.
So in conclusion I have two suggestions for the seller/manufacturer.
1) source a softer gasket, which would alleviate the fulcrum point & crush easier during install (cheaper option).
or
2) cast or machine the housing to incorporate less than a 1/32” standoff on the housing around the big bolt hole (costly option).
I don’t ever write reviews, but that’s my 2 cents & hope this helps someone else.
Keep on tuning, tuners. 🖖
Nice physical quality, fast shipping and good price.
I loved the fact that it is metal and not plastic like stock and the housing is of great quality. However, it did not open and flow coolant consistently at 95C like it should. I went with another brand after a few months and now the coolant temps are much more consistent. Mine might have been the rare exception.