Thermostat O-Ring, Wahler - E46 M3, MZ3 S54, Z4M

Seals thermostat to water pump housing. OEM replacement for BMW part #11531318402.

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Price:
$3.99

This part is listed by BMW as BMW part number 11531318402 (11 53 1 318 402) and is described as the o-ring seal between the thermostat and the water pump housing on S54 engines in the E46 M3, MZ3, and Z4M. It also fits the Euro S50 engine used in E36 M3.

This is an OEM thermostat o-ring manufactured by Wahler - 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.

BMW Fitments:

3 Series
E46 (99-05) > M3
Z Series
E36/7 / E36/8 Z3 (96-02) > Z3 M - S54
Z Series
E85 / E86 Z4 (03-08) > Z4 M
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