If your car is leaking coolant around the thermostat, or your thermostat housing is broken or cracked, then this could be your solution.


  • Direct replacement
  • Replaces dealer part numbers: 11531722531, 11 53 1 722 531
  • Built to strict quality control standards
  • Aluminum construction
  • Fits the following L6 engines as listed:
    • 2.5L
    • 2.8L
    • 3.0L
    • 3.2L

Over time from thermal expansion and contraction the mating surfaces on the housing can warp or crack. If you are experiencing any of these issues replace your thermostat housing with our direct replacement part.

Item Condition: New

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

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Vehicle Fit

Year Make Model Description
1998-1999BMW 323iC BMW 323iC Thermostat Housing L6 2.5L
1998-1999BMW 323iS BMW 323iS Thermostat Housing L6 2.5L
1992-1993BMW 325iC BMW 325iC Thermostat Housing L6 2.5L
1996-1998BMW 328i BMW 328i Thermostat Housing L6 2.8L
1996-1999BMW 328iC BMW 328iC Thermostat Housing L6 2.8L
1996-1999BMW 328iS BMW 328iS Thermostat Housing L6 2.8L
1993-1995BMW 525i BMW 525i Thermostat Housing L6 2.5L
1993-1994BMW 525iT BMW 525iT Thermostat Housing L6 2.5L
1995BMW M3 BMW M3 Thermostat Housing L6 3.0L
1996-1999BMW M3 BMW M3 Thermostat Housing L6 3.2L
1997-1998BMW Z3 BMW Z3 Thermostat Housing L6 2.8L

This part replaces:

  • OE # 11531722531
Part #: 1AEMX00013

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout