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Upgrade Aluminium Thermostat Housing Assembly for BMW 323 325 328 330 525 528 530 X3 Z3 Z4 X5 1999-2006 - Replaces 11537509227 11531437040 11531436823

  • Based on 244 reviews
Condition: New
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Availability: Only 10 left in stock, order soon!
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Arrives Tuesday, Sep 23
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Model: 11537509227(Upgrade Aluminum)


Features

  • [High-Quality Construction] Our Aluminum Thermostat Housing Assembly is made from premium materials, ensuring superior performance and durability. Its high tolerance design guarantees a precise fit, allowing you to effortlessly repair leaking thermostat housings and prevent engine overheating caused by thermostat failure. Thermostat Opening Temperature: 206.6 Deg. F / 97 C
  • [Replacement OEM Number] 11534 115345097 902-813 Z63001, 1430825, 14602, 1 53 0 139 877, 11 53 7 509 227, 11 53 1 437 040, 11 53 1 436 823, 432697D, 4326.97D, 11 53 4 509 763, 256101, TM1397 SK902813 040 01750922710 V20-99-1258-1 V2085
  • [Easy Installation] Designed as a direct replacement for the original OE part, the thermostat housing assembly offers hassle-free installation. Simply remove the old unit and install our replacement with ease. No special tools or modifications are required, saving you time and effort
  • [Reliable Performance] With its high sealing capability and exceptional reliability, our thermostat housing assembly provides long-lasting functionality. You can trust it to maintain optimal engine temperature and prevent any potential issues associated with thermostat malfunction. Say goodbye to overheating problems and enjoy a smooth driving experience
  • [Satisfaction Guaranteed] We stand behind the quality of our products. To ensure your complete satisfaction, we offer a full 30-day money-back guarantee on all purchases. If you're not completely satisfied with our Aluminum Thermostat Housing Assembly, simply return it to us for a no-hassle refund or credit. Your satisfaction is our top priority

Manufacturer: ‎C-Tzu


Brand: ‎C-Tzu


Model: ‎047-062


Item Weight: ‎1.19 pounds


Package Dimensions: ‎8.23 x 4.61 x 4.57 inches


Item model number: ‎11537509227(Upgrade Aluminum)


Exterior: ‎/


Manufacturer Part Number: ‎11537509227


Date First Available: April 17, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • It works
Model: 902-2090(Upgrade Aluminum)
Easy install. No issues.
Reviewed in the United States on September 13, 2025 by Todd

  • Perfect fit and high quality
Model: 05184651AF(Upgrade Aluminum)
Perfect fit for my 2012 JGC 3.6! I really like that it is made of aluminum and not PVC which makes me feel it is going to be quite durable. Super easy to install using a video. Hey, if you have to replace a part, why not replace it with something better that won't brake the bank?
Reviewed in the United States on May 30, 2025 by Steven G.

  • sedan body style
Model: 11537509227(Upgrade Aluminum)
fits a 2004 bmw 325i
Reviewed in the United States on September 7, 2025 by Idlebird’s

  • Does not fit 2014 Jeep GC. Poor casting job
Model: 902-852(with Coolant Pipe)
Does not fit 2014 Jeep Grand Cherokee 3.6 despite what the ad says. As you can see in the attached pics, the casting the the right of the top thermostat bolt runs the entire depth of piece but the OEM plastic version does not. That's because the OEM follows the contour of the engine and there's a larger casting on the engine that needs that relief. I wasted my afternoon and same day delivery on this terrible part ... show more
Reviewed in the United States on April 21, 2025 by Jeremy Chamberlin Jeremy Chamberlin

  • Easy replacement, no leaks
Model: 902-3036(Upgrade Aluminum)
Easy replacement on a Chrysler T&C. Had been waiting until spring to replace when the heater hose Y split. After fixing that, when opening the bleeder screw, the OEM plastic housing disintegrated. Glad I had this one on hand. Used the included gasket and thermostat. No leaks, and engine and heater temps and warmup time are consistent. It's winter now, will update if something changes in the summer. Functional bleeder screw (believe it or not, got a part for a different car that had the bleeder screw as part of the casting). Every 3.6L Pentastar needs this, and it's so cheap. Far easier than the oil filter housing replacement. Reuse your factory hose clamp. ... show more
Reviewed in the United States on February 14, 2025 by Andrew C.

  • Quality part
Model: 902-821(Upgrade Aluminum)
Great part, fixed the problem
Reviewed in the United States on July 26, 2025 by lola c.

  • Good product
Model: 15-81816(Upgrade Aluminum)
Product was very easy to install and great price.
Reviewed in the United States on November 12, 2024 by tre

  • As advertised
Model: 902-5912(Upgrade Aluminum)
Fit perfect and works well!
Reviewed in the United States on September 16, 2025 by Jay B Montgomery

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