Automatic Transmission Oil Cooler Line O-Ring

This o-ring seals the oil cooler hose to the oil cooler and/or the engine or transmission. It's 10.82mm x 1.78mm. If your transmission has an oil cooler or the engine has an oil cooler, this is the o-ring to seal the hose at the connection. Often times the hose itself is not the source of the leak (but look closely to be sure) and this o-ring can fix pesky little leaks.

This is an o-ring manufactured by Rein Automotive - an original supplier to BMW for many other seals and gaskets. As an OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM-type parts like Rein are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.