URO
Heavy Duty Aluminum Upgrade, Lifetime Warranty

URO 11537509227PRM Engine Coolant Thermostat / Water Inlet Assembly

Brand URO 11537509227PRM
Color Silver
Inside Diameter 31.97
Opening Temperature 98
Gasket Or Seal Included Yes
Housing Material Aa 7031
Bleeder Screw Included No
Thermostat Material Steel
Mounting Hole Diameter 6.9
Product line Heavy Duty Aluminum Upgrade, Lifetime Warranty
Fits BMW · 67 vehicles

Heavy-duty aluminum upgrade. AA 7031 housing adds strength for cooling system service.

Complete sealing interface. Includes a gasket or seal for the housing assembly.

Lifetime Warranty. URO Premium backs the PRM line with long-term coverage.

Cross-references Dorman - Conduct-Tite 85955, URO 11537509227PRM and 11 53 0 139 877 for the same application. See all 7.

$59.07Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $59.07
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Thermostat and Housing Overview

This URO Premium engine coolant thermostat and water inlet assembly is built for BMW cooling system service where the original housing is prone to failure. It combines a silver aluminum housing with a steel thermostat and included gasket for a direct replacement style repair. Part number 11537509227PRM is a heavy-duty aluminum upgrade for select BMW applications.

Key Features

  • Aluminum housing in AA 7031 material for improved durability.
  • Steel thermostat with a 98-degree opening temperature.
  • Gasket or seal included for a complete sealing interface.
  • URO Premium re-engineered design for failure-prone cooling components.
  • Part number 11537509227PRM with URO Premium PRM identification.

Detailed Description

Designed as a replacement thermostat housing assembly, this part addresses common cooling system wear points by using more robust materials than many original plastic-style units. The housing material, thermostat construction, and included seal support a reliable coolant flow control setup for BMW 325Ci, 330Ci, X3, X5, 325i, 330i, 525i, 530i, Z4, Z3, 323i, 328i, and 528i applications. If you are replacing a leaking or deteriorated thermostat housing, 11537509227PRM provides a service-focused solution for BMW cooling system maintenance.

What It Is Used For

  • Replacing a cracked or leaking thermostat housing.
  • Restoring proper coolant temperature regulation.
  • Addressing seal-related coolant loss at the housing interface.
  • Updating a worn cooling system component with aluminum construction.
  • Servicing BMW cooling systems that use part number 11537509227PRM.

Installation Notes and Tips

Verify engine and chassis fitment before installation, since this assembly is listed across multiple BMW models and years. Confirm the thermostat opening temperature and housing dimensions against the original part during service. The fitment data includes BMW 325Ci, 330Ci, X3, X5, 325i, 330i, 525i, 530i, Z4, Z3, 323i, 328i, and 528i applications; some listings note production-date-specific coverage for 1998-1999 528i models.

Quality Assurance

URO Premium states that its PRM line uses re-engineered designs and higher-grade materials to improve durability over failure-prone original parts. This product carries a Lifetime Warranty and is identified by the URO Premium seal and PRM suffix.

This part fits 67 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelBody TypeLitersCylindersNotes
2006BMW325Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2006BMW330Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2006BMWX3————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2006BMWX53.0i———Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2005BMW325Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2005BMW325i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2005BMW325xi————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2005BMW330Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2005BMW330i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2005BMW330xi————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2005BMW525i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2005BMW530i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2005BMWX3————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2005BMWX53.0i———Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2005BMWZ4————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2004BMW325Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2004BMW325i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2004BMW325xi————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2004BMW330Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2004BMW330i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2004BMW330xi————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2004BMW525i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2004BMW530i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2004BMWX3————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2004BMWX53.0i———Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2004BMWZ4————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2003BMW325Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2003BMW325i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2003BMW325xi————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2003BMW330Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2003BMW330i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2003BMW330xi————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2003BMW525i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2003BMW530i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2003BMWX53.0i———Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2003BMWZ4————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2002BMW325Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2002BMW325i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2002BMW325xi————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2002BMW330Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2002BMW330i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2002BMW330xi————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2002BMW525i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2002BMW530i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2002BMWX53.0i———Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2002BMWZ3Coupe———Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2001BMW325Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2001BMW325i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2001BMW325xi————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2001BMW330Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2001BMW330i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2001BMW330xi————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2001BMW525i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2001BMW530i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2001BMWX53.0i———Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2001BMWZ3Roadster—2.5LL6Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2000BMW323Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2000BMW323i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2000BMW328Ci————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2000BMW328i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2000BMW528i————Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
2000BMWZ3Roadster—2.5LL6Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
1999BMW323i—Sedan——Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
1999BMW328i—Sedan——Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
1999BMW528i————Production Date Range: From 09/1998; Heavy Duty Aluminum Upgrade, Lifetime Warranty
1999BMWZ3Roadster—2.5LL6Aluminum Housing; Includes Thermostat & Gasket; Heavy Duty Aluminum Upgrade, Lifetime Warranty
1998BMW528i————Production Date Range: From 09/1998; Heavy Duty Aluminum Upgrade, Lifetime Warranty
Directly replaces or cross-references 7 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - Conduct-Tite — 85955URO — 11537509227PRM11 53 0 139 87711 53 1 437 04011 53 7 509 227URO-007365Z63001