Cooling of North and Southbridge is resized with a single block that is called XXX. G1/4 inch fittings can be attached. The package also contains Arctic Silver 5 thermal grease, two o-rings and mounting parts.
The two MOSFET coolers BP-WBPAMOS2-BK Black Freezer MOS AMOSII POM Version and BP-WBPAMOS3-BK Black Freezer MOS AMOSIII POM Version also are compatible to G1/4 inch fittings. O-rings and mounting materials are included, too.
Source: PC Games Hardware