Description
Special Oil Return Connection for B230Turbo Block
Designed for 20mm hose
Size in the Block: 25mm
Material: Steel (Anodized)
It looks like there are different castings on the blocks:
If there is no looseness, take some locktite and tap the connection
If there is a lot of looseness, it is advisable to turn a groove for the O-ring
The connection goes into the block about 15mm