Hi William,
The water block in the BP-TEKIT-6900XT kit fits for AMD 6950 xt reference card.
But the tube is for the TITAN ONE 1.2 or 2.0 series. Such as the following link.
If your chassis is not Titan One series, you may need to change the length of the tube.
https://bitspower.com/titanseries/titan_one_2.0/
https://shop.bitspower.com/index.php?route=product/category&path=59_125_358_388
