Dorman 902-5155 Engine Coolant Thermostat Housing Assembly - Water Pump
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Dorman

Dorman 902-5155 Engine Coolant Thermostat Housing Assembly - Water Pump

Brand Dorman 902-5155
Bleeder Hole No
Bolt Hole Center To Bolt Hole Center 3.18
Bolt Hole Center To Bolt Hole Center 3.31
Bolt Hole Center To Bolt Hole Center 3.42
Color Black
Flange Length 0.71
Flange Length 0.83
Flange Thickness 0.125
Flange Thickness 0.17
Flange Width 1.05
Flange Width 1.6
Gasket Or Seal Included Yes
Gasket Type Standard
Grade Type Regular
Inside Diameter 1.3
Material Plastic
Mounting Hardware Included No
Mounting Hole Quantity 2
Outlet Port Quantity 3
Package Contents 1 Sensor; 1 Thermostat Housing; 1 Thermostat; 3 Bolts
Thermostat Included Yes
Thermostat Opening Temperature 217 Deg. F
Fits BMW · 28 vehicles

OE-style replacement. Matches the stock housing assembly for a straightforward swap.

Plastic housing. Lightweight construction with a black finish and included seal.

Thermostat included. Comes as a complete assembly with thermostat and gasket.

Cross-references Beck/Arnley 143-0904, Gates 34834 and Motorad 691-190 for the same application. See all 5.

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Not what you need? See all Engine Coolant Thermostat Housing Assembly options

Engine Cooling Thermostat Housing Assembly

Dorman 902-5155 is a replacement engine coolant thermostat housing assembly built to match the fit and durability of the original housing on specified BMW applications. It is made from black plastic and includes a thermostat, gasket/seal, and sensor housing components for a direct replacement on select 2009-2015 BMW 2.5L models.

Key Features

  • Replacement thermostat housing assembly for engine cooling service
  • Black plastic construction for OE-style fit and function
  • Includes thermostat with a 217 deg. F opening temperature
  • Standard gasket included for sealing at the housing interface
  • Three outlet ports and two mounting holes
  • Designed for select BMW X1, X5, X6, 135i, 135is, 335i, and 335i xDrive 2.5L applications

Detailed Description

This Dorman thermostat housing assembly is engineered for vehicles that need a direct-fit coolant outlet and thermostat replacement. The housing is designed to handle repeated temperature swings in the cooling system, helping maintain proper coolant flow and engine operating temperature. Part number 902-5155 is a practical OE-style replacement for BMW X1, BMW X5, BMW X6, BMW 135i, BMW 135is, BMW 335i, and BMW 335i xDrive models with the specified 2.5L engine coverage.

This part cross-references Beck/Arnley 143-0904 and Gates 34834 for the same application.

What It Helps Address

  • Coolant leaks at a cracked or warped thermostat housing
  • Engine temperature fluctuations from a worn thermostat
  • Cooling system service needs on BMW 2.5L engines
  • Fault codes or drivability issues related to coolant temperature control
  • Loss of sealing at the housing-to-engine connection

Installation Notes and Tips

Verify engine size and application before installation. This housing uses a standard gasket seal and does not include mounting hardware, so reuse or source the required bolts as needed. Inspect the mating surfaces, coolant hoses, and sensor connections before reassembly, and refill and bleed the cooling system according to the vehicle service procedure after installation.

Quality Assurance

Dorman designs this replacement thermostat housing assembly to match the fit and durability of the stock part on specified vehicles and to withstand extreme temperature changes for extended service life.

Fitment

  • Fits 2012-2015 BMW X1, N/A
  • Fits 2011-2014 BMW X6, N/A
  • Fits 2011-2013 BMW 135i, N/A
  • Fits 2013 BMW 135is, N/A
  • Fits 2011-2013 BMW 335i, N/A
  • Fits 2009-2013 BMW 335i xDrive, N/A
  • Fits 2012-2013 BMW X5, N/A
  • Fits 2011-2013 BMW X5, Water Pump

Related reading

This part fits 28 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelBody TypeLitersCylindersFuel TypePositionNotes
2015BMWX1——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2014BMWX1——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2014BMWX6——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2013BMW135i——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2013BMW135is——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2013BMW335i—Convertible3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2013BMW335i—Coupe3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2013BMW335i xDrive—Coupe3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2013BMWX1——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2013BMWX5xDrive30i—3.0LL6GASN/AFits 2.5L engine models from 2009 to 2015.
2013BMWX5xDrive35i—3.0LL6GASWater PumpFits 2.5L engine models from 2009 to 2015.
2013BMWX6——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2012BMW135i——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2012BMW335i—Convertible3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2012BMW335i—Coupe3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2012BMW335i xDrive——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2012BMWX1——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2012BMWX5xDrive30i—3.0LL6GASN/AFits 2.5L engine models from 2009 to 2015.
2012BMWX5xDrive35i—3.0LL6GASWater PumpFits 2.5L engine models from 2009 to 2015.
2012BMWX6——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2011BMW135i——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2011BMW335i——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2011BMW335i xDrive——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2011BMWX5xDrive35i—3.0LL6GASWater PumpFits 2.5L engine models from 2009 to 2015.
2011BMWX5xDrive30i—3.0LL6GASWater PumpFits 2.5L engine models from 2009 to 2015.
2011BMWX6——3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2010BMW335i xDrive—Coupe3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
2009BMW335i xDrive—Coupe3.0LL6—N/AFits 2.5L engine models from 2009 to 2015.
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Beck/Arnley — 143-0904Gates — 34834Motorad — 691-190URO — 1153760115869190