Correct, the 1 and 4 pumps are fine.
The Koralias use three different bodies; 1, 2 & 3, and 4
The 2 & 3 housing had the problem
Correct, the 1 and 4 pumps are fine.
The Koralias use three different bodies; 1, 2 & 3, and 4
The 2 & 3 housing had the problem