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Rein CTA0028 Engine Coolant Thermostat Housing AssemblyOE Quality 60-Day Returns
Part #: CTA0028

Rein CTA0028 Engine Coolant Thermostat Housing Assembly

341 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: BMW and Rolls-Royce, 545i, 550i, 550i GT, 550i GT xDrive, 550i xDrive, 645Ci, 650i, 650i Gran Coupe, 650i xDrive, 650i xDrive Gran Coupe, 745i, 745Li, 750i, 750i xDrive, 750Li, 750Li xDrive, 760i, 760i xDrive, 760Li, Alpina XB7, Cullinan, Dawn, Ghost, M2, M3, M4, M5, M5 Touring, M6, M6 Gran Coupe, M760i xDrive, M760Li xDrive, M8, M8 Gran Coupe, Phantom, Wraith, X3, X4, X5, X6, X7, and XM
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Not what you need? See all Engine Coolant Thermostat Housing Assembly options

OE Quality Thermostat Housing Assembly

Rein CTA0028 is an OE-quality engine coolant thermostat housing assembly built for direct replacement service on select BMW and Rolls-Royce cooling systems. It is engineered to match original equipment design specifications, with a thermostat calibrated to 105 degrees Celsius for stable operating temperature control.

Compatible with BMW M5, X5, X6, X7, XM, M3, M4, M8, 760i xDrive, and Rolls-Royce Ghost, Phantom, and Cullinan applications, this thermostat housing assembly is made to support accurate coolant flow and straightforward installation. Rein CTA0028 is also a direct-fit option for BMW and Rolls-Royce owners looking for an OE-style replacement.

Key Features

  • Matches original equipment design specifications
  • Direct fitment for easier installation
  • Built to strict engineering standards for materials and tolerances
  • Thermostat calibrated to 105 degrees Celsius
  • OE-quality housing construction in metal or plastic, based on vehicle requirements
  • Rein CTA0028 replacement part for select BMW and Rolls-Royce cooling systems

Detailed Description

Rein Automotive thermostat assemblies are manufactured as direct replacements for OE units, using molds cast from OEM parts to help maintain factory-style dimensions and fit. The housing design follows vehicle-specific requirements, and the assembly uses high-quality components selected for durability and service life. For technicians and owners servicing BMW cooling system repairs, CTA0028 provides a precise replacement for the original thermostat housing assembly.

This part cross-references BMW OE numbers 11530304425 and 11537502779 for the same application.

What It Helps Address

  • Engine running too cool or too hot due to thermostat control issues
  • Coolant temperature instability during normal driving
  • Leaks or sealing concerns at the thermostat housing
  • Fitment problems caused by worn or incorrect replacement housings
  • Cooling system service needs on BMW and Rolls-Royce vehicles

Installation Notes and Tips

Verify the part number and vehicle application before installation. This thermostat housing assembly is application-specific and does not include installation instructions or hardware. Because cooling system components are sensitive to fit and sealing, inspect related hoses, seals, and coolant condition during service.

Quality Assurance

Rein CTA0028 is manufactured to OE-style material and tolerance standards for consistent fit and performance. The assembly is produced in Germany and built to meet the factory requirements expected for BMW and Rolls-Royce cooling system repair.

Fits 2023-2026 BMW 760i xDrive, N/A. Fits 2023-2026 BMW M2, N/A. Fits 2019-2021 BMW M2, N/A. Fits 2021-2026 BMW M3, N/A. Fits 2015-2018 BMW M3, N/A. Fits 2015-2026 BMW M4, N/A. Fits 2025-2026 BMW M5, N/A. Fits 2018-2023 BMW M5, N/A. Fits 2012-2016 BMW M5, N/A. Fits 2025-2026 BMW M5 Touring, N/A. Fits 2020-2026 BMW X5, N/A. Fits 2004-2018 BMW X5, N/A. Fits 2008-2026 BMW X6, N/A. Fits 2023-2026 BMW X7, N/A. Fits 2023-2026 BMW XM, N/A. Fits 2019-2026 Rolls-Royce Cullinan, N/A. Fits 2023-2025 BMW Alpina XB7, N/A. Fits 2022-2025 BMW M8, N/A. Fits 2020 BMW M8, N/A. Fits 2020-2025 BMW M8 Gran Coupe, N/A. Fits 2020-2025 BMW X4, N/A. Fits 2010-2025 Rolls-Royce Ghost, N/A. Fits 2004-2025 Rolls-Royce Phantom, N/A. Fits 2020-2024 BMW X3, N/A. Fits 2017-2022 BMW M760i xDrive, N/A. Fits 2017-2022 BMW M760Li xDrive, N/A. Fits 2017-2021 Rolls-Royce Dawn, N/A. Fits 2014-2021 Rolls-Royce Wraith, N/A. Fits 2013-2019 BMW 650i Gran Coupe, N/A. Fits 2013-2019 BMW 650i xDrive Gran Coupe, N/A. Fits 2014-2019 BMW M6 Gran Coupe, N/A. Fits 2012-2018 BMW 650i, N/A. Fits 2006-2010 BMW 650i, N/A. Fits 2012-2018 BMW 650i xDrive, N/A. Fits 2012-2018 BMW M6, N/A. Fits 2010-2017 BMW 550i GT xDrive, N/A. Fits 2006-2016 BMW 550i, N/A. Fits 2011-2016 BMW 550i xDrive, N/A. Fits 2010-2015 BMW 550i GT, N/A. Fits 2006-2015 BMW 750i, N/A. Fits 2010-2015 BMW 750i xDrive, N/A. Fits 2006-2015 BMW 750Li, N/A. Fits 2010-2015 BMW 750Li xDrive, N/A. Fits 2010-2015 BMW 760Li, N/A. Fits 2003-2008 BMW 760Li, N/A. Fits 2004-2006 BMW 760i, N/A. Fits 2004-2005 BMW 545i, N/A. Fits 2004-2005 BMW 645Ci, N/A. Fits 2002-2005 BMW 745i, N/A. Fits 2002-2005 BMW 745Li, N/A.

BrandRein
Part NumberCTA0028
Application TypeApplicationspecific
Bullet Point 1Matches original equipment design specifications
Bullet Point 2Direct fitments allows easy installation
Bullet Point 3Manufactured to strict engineering standards/specifications in ma
Bullet Point 4Thermostat set to 105 degrees celsius to maintain optimal running
Container TypeBx
Country of OriginDe
Installation Instructions IncludedNo
Is the Installation Hardware IncludedNo
Item Height4.0000
Item Length7.0000
Item Level GTIN888544068041
Item Qty1
Item Quantity Size1
Item Quantity Size UOMEa
Item UOMEa
Item Weight0.7200
Item Weight Unit UOMLb
Item Width5.0000
Product Desc Extended 240Rein oe quality thermostat assemblies are designed to be direct r
Product Desc Invoice 40Rein thermostat assembly
Product Desc Long 80Rein oe quality thermostat assembly
Product Desc Short 20Thermostat assembly

This part fits 341 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2026BMW760i xDrive4.4LV8N/A
2026BMWM23.0LL6N/A
2026BMWM33.0LL6N/A
2026BMWM43.0LL6N/A
2026BMWM54.4LV8N/A
2026BMWM5 Touring4.4LV8N/A
2026BMWX54.4LV8N/A
2026BMWX64.4LV8N/A
2026BMWX74.4LV8N/A
2026BMWXM4.4LV8PLUG-IN HYBRID EV-GAS (PHEV)N/A
2026Rolls-RoyceCullinan6.7LV12N/A
2025BMW760i xDrive4.4LV8N/A
2025BMWAlpina XB74.4LV8N/A
2025BMWM23.0LL6N/A
2025BMWM33.0LL6N/A
2025BMWM43.0LL6N/A
2025BMWM54.4LV8N/A
2025BMWM5 Touring4.4LV8N/A
2025BMWM84.4LV8N/A
2025BMWM8 Gran Coupe4.4LV8N/A
2025BMWX4M3.0LL6N/A
2025BMWX54.4LV8N/A
2025BMWX64.4LV8N/A
2025BMWX74.4LV8N/A
2025BMWXM4.4LV8PLUG-IN HYBRID EV-GAS (PHEV)N/A
2025Rolls-RoyceCullinan6.7LV12N/A
2025Rolls-RoyceGhost6.7LV12N/A
2025Rolls-RoycePhantom6.7LV12N/A
2024BMW760i xDrive4.4LV8N/A
2024BMWAlpina XB74.4LV8N/A
2024BMWM23.0LL6N/A
2024BMWM33.0LL6N/A
2024BMWM43.0LL6N/A
2024BMWM84.4LV8N/A
2024BMWM8 Gran Coupe4.4LV8N/A
2024BMWX3M3.0LL6N/A
2024BMWX4M3.0LL6N/A
2024BMWX54.4LV8N/A
2024BMWX64.4LV8N/A
2024BMWX74.4LV8N/A
2024BMWXM4.4LV8PLUG-IN HYBRID EV-GAS (PHEV)N/A
2024Rolls-RoyceCullinan6.7LV12N/A
2024Rolls-RoyceGhost6.7LV12N/A
2024Rolls-RoycePhantom6.7LV12N/A
2023BMW760i xDrive4.4LV8N/A
2023BMWAlpina XB74.4LV8N/A
2023BMWM23.0LL6N/A
2023BMWM33.0LL6N/A
2023BMWM43.0LL6N/A
2023BMWM54.4LV8N/A
2023BMWM84.4LV8N/A
2023BMWM8 Gran Coupe4.4LV8N/A
2023BMWX3M3.0LL6N/A
2023BMWX4M3.0LL6N/A
2023BMWX5M4.4LV8N/A
2023BMWX6M4.4LV8N/A
2023BMWX74.4LV8N/A
2023BMWXM4.4LV8PLUG-IN HYBRID EV-GAS (PHEV)N/A
2023Rolls-RoyceCullinan6.7LV12N/A
2023Rolls-RoyceGhost6.7LV12N/A
2023Rolls-RoycePhantom6.7LV12N/A
2022BMWM33.0LL6N/A
2022BMWM43.0LL6N/A
2022BMWM54.4LV8N/A
2022BMWM760i xDrive6.6LV12N/A
2022BMWM760Li xDrive6.6LV12N/A
2022BMWM84.4LV8N/A
2022BMWM8 Gran Coupe4.4LV8N/A
2022BMWX33.0LL6N/A
2022BMWX43.0LL6N/A
2022BMWX5M4.4LV8N/A
2022BMWX6M4.4LV8N/A
2022Rolls-RoyceCullinan6.7LV12N/A
2022Rolls-RoyceGhost6.7LV12N/A
2022Rolls-RoycePhantom6.7LV12N/A
2021BMWM23.0LL6N/A
2021BMWM33.0LL6N/A
2021BMWM43.0LL6N/A
2021BMWM54.4LV8N/A
2021BMWM760i xDrive6.6LV12N/A
2021BMWM760Li xDrive6.6LV12N/A
2021BMWM8 Gran Coupe4.4LV8N/A
2021BMWX3M3.0LL6N/A
2021BMWX3M Competition3.0LL6N/A
2021BMWX4M3.0LL6N/A
2021BMWX4M Competition3.0LL6N/A
2021BMWX5M4.4LV8N/A
2021BMWX5M Competition4.4LV8N/A
2021BMWX6M4.4LV8N/A
2021BMWX6M Competition4.4LV8N/A
2021Rolls-RoyceCullinan6.7LV12N/A
2021Rolls-RoyceDawn6.6LV12N/A
2021Rolls-RoyceGhost6.7LV12N/A
2021Rolls-RoycePhantom6.7LV12N/A
2021Rolls-RoyceWraith6.6LV12N/A
2020BMWM23.0LL6N/A
2020BMWM43.0LL6N/A
2020BMWM54.4LV8N/A
2020BMWM760i xDrive6.6LV12N/A
2020BMWM760Li xDrive6.6LV12N/A
2020BMWM84.4LV8N/A
2020BMWM8 Gran Coupe4.4LV8N/A
2020BMWX3M3.0LL6N/A
2020BMWX3M Competition3.0LL6N/A
2020BMWX4M3.0LL6N/A
2020BMWX4M Competition3.0LL6N/A
2020BMWX5M4.4LV8N/A
2020BMWX5M Competition4.4LV8N/A
2020BMWX6M4.4LV8N/A
2020BMWX6M Competition4.4LV8N/A
2020Rolls-RoyceCullinan6.7LV12N/A
2020Rolls-RoyceDawn6.6LV12N/A
2020Rolls-RoyceGhost6.6LV12N/A
2020Rolls-RoycePhantom6.7LV12N/A
2020Rolls-RoyceWraith6.6LV12N/A
2019BMW650i Gran Coupe4.4LV8N/A
2019BMW650i xDrive Gran Coupe4.4LV8N/A
2019BMWM23.0LL6N/A
2019BMWM43.0LL6N/A
2019BMWM54.4LV8N/A
2019BMWM6 Gran Coupe4.4LV8N/A
2019BMWM760i xDrive6.6LV12N/A
2019BMWM760Li xDrive6.6LV12N/A
2019BMWX64.4LV8N/A
2019Rolls-RoyceCullinan6.7LV12N/A
2019Rolls-RoyceDawn6.6LV12N/A
2019Rolls-RoyceGhost6.6LV12N/A
2019Rolls-RoycePhantom6.7LV12N/A
2019Rolls-RoyceWraith6.6LV12N/A
2018BMW650i4.4LV8N/A
2018BMW650i Gran Coupe4.4LV8N/A
2018BMW650i xDrive4.4LV8N/A
2018BMW650i xDrive Gran Coupe4.4LV8N/A
2018BMWM33.0LL6N/A
2018BMWM43.0LL6N/A
2018BMWM54.4LV8N/A
2018BMWM64.4LV8N/A
2018BMWM6 Gran Coupe4.4LV8N/A
2018BMWM760i xDrive6.6LV12N/A
2018BMWM760Li xDrive6.6LV12N/A
2018BMWX54.4LV8N/A
2018BMWX64.4LV8N/A
2018Rolls-RoyceDawn6.6LV12N/A
2018Rolls-RoyceGhost6.6LV12N/A
2018Rolls-RoycePhantom6.7LV12N/A
2018Rolls-RoyceWraith6.6LV12N/A
2017BMW550i GT xDrive4.4LV8N/A
2017BMW650i4.4LV8N/A
2017BMW650i Gran Coupe4.4LV8N/A
2017BMW650i xDrive4.4LV8N/A
2017BMW650i xDrive Gran Coupe4.4LV8N/A
2017BMWM33.0LL6N/A
2017BMWM43.0LL6N/A
2017BMWM64.4LV8N/A
2017BMWM6 Gran Coupe4.4LV8N/A
2017BMWM760i xDrive6.6LV12N/A
2017BMWM760Li xDrive6.6LV12N/A
2017BMWX54.4LV8N/A
2017BMWX64.4LV8N/A
2017Rolls-RoyceDawn6.6LV12N/A
2017Rolls-RoyceGhost6.6LV12N/A
2017Rolls-RoycePhantom6.7LV12N/A
2017Rolls-RoyceWraith6.6LV12N/A
2016BMW550i4.4LV8N/A
2016BMW550i GT xDrive4.4LV8N/A
2016BMW550i xDrive4.4LV8N/A
2016BMW650i4.4LV8N/A
2016BMW650i Gran Coupe4.4LV8N/A
2016BMW650i xDrive4.4LV8N/A
2016BMW650i xDrive Gran Coupe4.4LV8N/A
2016BMWM33.0LL6N/A
2016BMWM43.0LL6N/A
2016BMWM54.4LV8N/A
2016BMWM64.4LV8N/A
2016BMWM6 Gran Coupe4.4LV8N/A
2016BMWX54.4LV8N/A
2016BMWX64.4LV8N/A
2016Rolls-RoyceGhost6.6LV12N/A
2016Rolls-RoycePhantom6.7LV12N/A
2016Rolls-RoyceWraith6.6LV12N/A
2015BMW550i4.4LV8N/A
2015BMW550i GT4.4LV8N/A
2015BMW550i GT xDrive4.4LV8N/A
2015BMW550i xDrive4.4LV8N/A
2015BMW650i4.4LV8N/A
2015BMW650i Gran Coupe4.4LV8N/A
2015BMW650i xDrive4.4LV8N/A
2015BMW650i xDrive Gran Coupe4.4LV8N/A
2015BMW750i4.4LV8N/A
2015BMW750i xDrive4.4LV8N/A
2015BMW750Li4.4LV8N/A
2015BMW750Li xDrive4.4LV8N/A
2015BMW760Li6.0LV12N/A
2015BMWM33.0LL6N/A
2015BMWM43.0LL6N/A
2015BMWM54.4LV8N/A
2015BMWM64.4LV8N/A
2015BMWM6 Gran Coupe4.4LV8N/A
2015BMWX54.4LV8N/A
2015BMWX64.4LV8N/A
2015Rolls-RoyceGhost6.6LV12N/A
2015Rolls-RoycePhantom6.7LV12N/A
2015Rolls-RoyceWraith6.6LV12N/A
2014BMW550i4.4LV8N/A
2014BMW550i GT4.4LV8N/A
2014BMW550i GT xDrive4.4LV8N/A
2014BMW550i xDrive4.4LV8N/A
2014BMW650i4.4LV8N/A
2014BMW650i Gran Coupe4.4LV8N/A
2014BMW650i xDrive4.4LV8N/A
2014BMW650i xDrive Gran Coupe4.4LV8N/A
2014BMW750i4.4LV8N/A
2014BMW750i xDrive4.4LV8N/A
2014BMW750Li4.4LV8N/A
2014BMW750Li xDrive4.4LV8N/A
2014BMW760Li6.0LV12N/A
2014BMWM54.4LV8N/A
2014BMWM64.4LV8N/A
2014BMWM6 Gran Coupe4.4LV8N/A
2014BMWX54.4LV8N/A
2014BMWX64.4LV8N/A
2014Rolls-RoyceGhost6.6LV12N/A
2014Rolls-RoycePhantom6.7LV12N/A
2014Rolls-RoyceWraith6.6LV12N/A
2013BMW550i4.4LV8N/A
2013BMW550i GT4.4LV8N/A
2013BMW550i GT xDrive4.4LV8N/A
2013BMW550i xDrive4.4LV8N/A
2013BMW650i4.4LV8N/A
2013BMW650i Gran Coupe4.4LV8N/A
2013BMW650i xDrive4.4LV8N/A
2013BMW650i xDrive Gran Coupe4.4LV8N/A
2013BMW750i4.4LV8N/A
2013BMW750i xDrive4.4LV8N/A
2013BMW750Li4.4LV8N/A
2013BMW750Li xDrive4.4LV8N/A
2013BMW760Li6.0LV12N/A
2013BMWM54.4LV8N/A
2013BMWM64.4LV8N/A
2013BMWX54.4LV8N/A
2013BMWX64.4LV8N/A
2013Rolls-RoyceGhost6.6LV12N/A
2013Rolls-RoycePhantom6.7LV12N/A
2012BMW550i4.4LV8N/A
2012BMW550i GT4.4LV8N/A
2012BMW550i GT xDrive4.4LV8N/A
2012BMW550i xDrive4.4LV8N/A
2012BMW650i4.4LV8N/A
2012BMW650i xDrive4.4LV8N/A
2012BMW750i4.4LV8N/A
2012BMW750i xDrive4.4LV8N/A
2012BMW750Li4.4LV8N/A
2012BMW750Li xDrive4.4LV8N/A
2012BMW760Li6.0LV12N/A
2012BMWM54.4LV8N/A
2012BMWM64.4LV8N/A
2012BMWX54.4LV8N/A
2012BMWX64.4LV8N/A
2012Rolls-RoyceGhost6.6LV12N/A
2012Rolls-RoycePhantom6.7LV12N/A
2011BMW550i4.4LV8N/A
2011BMW550i GT4.4LV8N/A
2011BMW550i GT xDrive4.4LV8N/A
2011BMW550i xDrive4.4LV8N/A
2011BMW750i4.4LV8N/A
2011BMW750i xDrive4.4LV8N/A
2011BMW750Li4.4LV8N/A
2011BMW750Li xDrive4.4LV8N/A
2011BMW760Li6.0LV12N/A
2011BMWX54.4LV8N/A
2011BMWX64.4LV8N/A
2011Rolls-RoyceGhost6.6LV12N/A
2011Rolls-RoycePhantom6.7LV12N/A
2010BMW550i4.8LV8N/A
2010BMW550i GT4.4LV8N/A
2010BMW550i GT xDrive4.4LV8N/A
2010BMW650i4.8LV8N/A
2010BMW750i4.4LV8N/A
2010BMW750i xDrive4.4LV8N/A
2010BMW750Li4.4LV8N/A
2010BMW750Li xDrive4.4LV8N/A
2010BMW760Li6.0LV12N/A
2010BMWX54.4LV8N/A
2010BMWX54.8LV8N/A
2010BMWX64.4LV8N/A
2010Rolls-RoyceGhost6.6LV12N/A
2010Rolls-RoycePhantom6.7LV12N/A
2009BMW550i4.8LV8N/A
2009BMW650i4.8LV8N/A
2009BMW750i4.4LV8N/A
2009BMW750Li4.4LV8N/A
2009BMWX54.8LV8N/A
2009BMWX64.4LV8N/A
2009Rolls-RoycePhantom6.7LV12N/A
2008BMW550i4.8LV8N/A
2008BMW650i4.8LV8N/A
2008BMW750i4.8LV8N/A
2008BMW750Li4.8LV8N/A
2008BMW760Li6.0LV12N/A
2008BMWX54.8LV8N/A
2008BMWX64.4LV8N/A
2008Rolls-RoycePhantom6.7LV12N/A
2007BMW550i4.8LV8N/A
2007BMW650i4.8LV8N/A
2007BMW750i4.8LV8N/A
2007BMW750Li4.8LV8N/A
2007BMW760Li6.0LV12N/A
2007BMWX54.8LV8N/A
2007Rolls-RoycePhantom6.7LV12N/A
2006BMW550i4.8LV8N/A
2006BMW650i4.8LV8N/A
2006BMW750i4.8LV8N/A
2006BMW750Li4.8LV8N/A
2006BMW760i6.0LV12N/A
2006BMW760Li6.0LV12N/A
2006BMWX54.4LV8N/A
2006BMWX54.8LV8N/A
2006Rolls-RoycePhantom6.7LV12N/A
2005BMW545i4.4LV8N/A
2005BMW645Ci4.4LV8N/A
2005BMW745i4.4LV8N/A
2005BMW745Li4.4LV8N/A
2005BMW760i6.0LV12N/A
2005BMW760Li6.0LV12N/A
2005BMWX54.4LV8N/A
2005BMWX54.8LV8N/A
2005Rolls-RoycePhantom6.7LV12N/A
2004BMW545i4.4LV8N/A
2004BMW645Ci4.4LV8N/A
2004BMW745i4.4LV8N/A
2004BMW745Li4.4LV8N/A
2004BMW760i6.0LV12N/A
2004BMW760Li6.0LV12N/A
2004BMWX54.4LV8N/A
2004BMWX54.8LV8N/A
2004Rolls-RoycePhantom6.7LV12N/A
2003BMW745i4.4LV8N/A
2003BMW745Li4.4LV8N/A
2003BMW760Li6.0LV12N/A
2002BMW745i4.4LV8N/A
2002BMW745Li4.4LV8N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

115303044251153750277911537586885

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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