C-Tzu aluminium thermostat housing front view shows corrosion resistance
C-Tzu thermostat housing side-angle shot highlights durable aluminum construction
C-Tzu aluminium housing close-up reveals precise casting and robust shell
C-Tzu thermostat housing OEM-number-plate view with 12678779 and 12673659 reference
C-Tzu housing installed on engine demonstrates secure mounting and leak-resistant design
C-Tzu thermostat housing packaging box communicates quality and value
C-Tzu housing temperature-label view shows opening at 194°F / 90°C
C-Tzu aluminium thermostat housing front view shows corrosion resistance
C-Tzu thermostat housing side-angle shot highlights durable aluminum construction
C-Tzu aluminium housing close-up reveals precise casting and robust shell
C-Tzu thermostat housing OEM-number-plate view with 12678779 and 12673659 reference
C-Tzu housing installed on engine demonstrates secure mounting and leak-resistant design
C-Tzu thermostat housing packaging box communicates quality and value
C-Tzu housing temperature-label view shows opening at 194°F / 90°C

C-Tzu Upgrade Aluminium Thermostat Housing Assembly for Buick LaCrosse & Regal (2017-2020), Cadillac XT5/XT6 (2017-2023), GMC Acadia (2017-2023) - Replaces 12678779 12673659

Introducing the C-Tzu Aluminium Thermostat Housing Assembly, a purpose-built upgrade for select GM models. This component sits...
Vendor: C-Tzu
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C-Tzu aluminium thermostat housing front view shows corrosion resistance

C-Tzu Upgrade Aluminium Thermostat Housing Assembly for Buick LaCrosse & Regal (2017-2020), Cadillac XT5/XT6 (2017-2023), GMC Acadia (2017-2023) - Replaces 12678779 12673659

£59.66
C-Tzu aluminium thermostat housing front view shows corrosion resistance
C-Tzu thermostat housing side-angle shot highlights durable aluminum construction
C-Tzu aluminium housing close-up reveals precise casting and robust shell
C-Tzu thermostat housing OEM-number-plate view with 12678779 and 12673659 reference
C-Tzu housing installed on engine demonstrates secure mounting and leak-resistant design
C-Tzu thermostat housing packaging box communicates quality and value
C-Tzu housing temperature-label view shows opening at 194°F / 90°C

C-Tzu Upgrade Aluminium Thermostat Housing Assembly for Buick LaCrosse & Regal (2017-2020), Cadillac XT5/XT6 (2017-2023), GMC Acadia (2017-2023) - Replaces 12678779 12673659

£59.66
Description
Description
x

Introducing the C-Tzu Aluminium Thermostat Housing Assembly, a purpose-built upgrade for select GM models. This component sits within the engine cooling loop and helps guide the flow of coolant to support steady operating temperatures. Crafted with a rugged aluminum shell, it delivers strong corrosion resistance and high-temperature durability, designed to withstand the heat and demanding conditions of daily driving. By design, the housing aims to minimize coolant leaks and provide a smoother driving experience, especially during road trips or urban commutes where temperature shifts are common.

Key benefits

  • Premium aluminum construction that replaces copper alternatives, offering improved strength and resilience in the engine bay.
  • Solid corrosion resistance and heat tolerance, helping the cooling path endure typical operating conditions over time.
  • Leak-reducing design intended to maintain coolant flow and reduce daily maintenance concerns.

Quality you can count on

  • Rigorous factory testing and calibration ensure the part meets performance standards before shipping.
  • OEM reference compatibility, including numbers 12678779 and 12673659, for straightforward replacement.
  • Open temperature rated at 194 Deg. F / 90 °C, aligning with common cooling expectations for many GM applications.

In addition to strong materials, the assembly is a cost-conscious option for customers who want OEM-like reliability without dealer pricing. It’s a practical upgrade for DIY enthusiasts and technicians who value precise fit, dependable operation, and long-term value. This part is designed to fit and function as an authentic replacement when installed correctly.

Compatibility spans Buick LaCrosse and Regal (2017-2020), Cadillac XT5 and XT6 (2017-2023), and GMC Acadia (2017-2023). When installing, please verify your OEM numbers to confirm a match. While individual results can vary with vehicle condition and driving environment, many users report improved coolant flow and reduced leak concerns after a successful replacement.

FAQ

Q: Is this thermostat housing compatible with my Buick or Cadillac model?

A: Most Buick LaCrosse, Regal 2017-2020, Cadillac XT5/XT6 2017-2023, and GMC Acadia 2017-2023 are supported; please confirm your OEM numbers.

Q: What are the main benefits of upgrading to the C-Tzu thermostat housing?

A: Durable aluminum shell, corrosion and high-temperature resistance, leak-reducing design, factory calibration, and cost savings compared with dealer replacements.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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