Engine Oil Heat Exchanger, Behr - N20 N26 N52 N55 Engines

This replacement engine oil heat exchanger mounts on the oil filter housing on many 2006+ BMW engines, including all N20 and N26 4-cylinder engines and also certain N52 and N55 engines. This part is listed by BMW as BMW part number 11427525333 (11 42 7 525 333).

We also recommend replacing the Profile Gasket - Part Number 11428637820 - See Related Items below.

This oil-to-water heat exchanger is located on the engine oil filter housing and acts like a cooled heat sink for engine oil. Engine oil flows through the block and is cooled by water/coolant from the engine radiator system. The internal passages are small and can become clogged, increasing engine oil temps. The fix for this issue is a new heat exchanger / oil cooler unit.

This is an OEM engine oil heat exchanger manufactured by BEHR (Mahle-BEHR) - the original supplier to BMW for this part, as well as many other cooling components. As the OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts 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.

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.