Cylinder Head to Thermostat Hose, Rein - E82 128i, E9X 325i/328i/330i, E85 Z4 3.0i/3.0si

This part is listed by BMW as BMW part number 11537545890 (11-53-7-545-890) and is described as the coolant hose running from the cylinder head to the thermostat on E82 128i, E9X 325i/328i/330i, and E85/E86 Z4 3.0i/3.0si models.

Pay particular attention to the flange where this hose is bolted to the cylinder head. The plastic can crack and snap here, leading to a coolant leak. An aluminum flange is available as an upgrade (also from Rein), see below.

Coolant leaks on the N51/N52 engines must not be ignored and repairs cannot be put off. Coolant leaking onto the belts makes them extra slippery and lead to belt failure and even major engine damage (belt ingestion). Fix coolant leaks right away!

This is an OEM N51/N52 coolant hose manufactured by Rein Automotive (CRP) - an original supplier to BMW for many components and systems. As an 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 877-639-9648.

BMW Fitments:

1 Series
E82 / E88 (08-13) > 128i
3 Series
E90 / E91 / E92 / E93 (06-13) > 323i
E90 / E91 / E92 / E93 (06-13) > 325i
E90 / E91 / E92 / E93 (06-13) > 325xi
E90 / E91 / E92 / E93 (06-13) > 328i
E90 / E91 / E92 / E93 (06-13) > 328xi
E90 / E91 / E92 / E93 (06-13) > 330i
E90 / E91 / E92 / E93 (06-13) > 330xi
Z Series
E85 / E86 Z4 (03-08) > Z4 3.0i N52
E85 / E86 Z4 (03-08) > Z4 3.0si N52