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🔥 Upgrade your BMW’s heartbeat with MITZONE’s precision thermostat assembly! 🏁
The MITZONE Upgrade Aluminum Thermostat Assembly is a robust, all-in-one cooling system replacement designed for BMW models from 1999 to 2006. Crafted from corrosion-resistant aluminum, it combines thermostat, housing, and gasket into a single durable unit, ensuring optimal engine temperature control and a perfect OEM fit. Backed by strong user reviews and responsive customer support, it’s the smart choice for BMW owners seeking reliability and performance.

| ASIN | B09YRBZF19 |
| Best Sellers Rank | #48,241 in Automotive ( See Top 100 in Automotive ) #39 in Automotive Replacement Engine Thermostat Housings |
| Brand | MITZONE |
| Customer Reviews | 4.1 4.1 out of 5 stars (172) |
| Date First Available | April 25, 2022 |
| Exterior | Aluminum |
| Item Weight | 1.25 pounds |
| Manufacturer | MITZONE |
| Manufacturer Part Number | 001-1038 |
| Model | Thermostat Assembly |
| OEM Part Number | 11537509227 |
| Package Dimensions | 7.52 x 5.87 x 4.65 inches |
| Position | Inside |
F**E
Good part
Looks solid and fits
J**G
Works great a year later
Thermostat is still working almost a year later so I defiantly would recommend this product and will buy another part
T**.
Fits, functions and looks good.
Well built. Had very little uneven surface at sealing area. Looks good and functions well. Great replacement part for 2005 BMW 325i. Recommend purchasing. Price is most excellent too.
G**D
Helpful piece in the 'war' against BMW overheating!
I have this item in TWO of my Bimmers.I wish BMW made more cooling components out of aluminum, as any Bmw owner knows the cooling system is a critical failure point on these cars! This is an affordable piece to help mitigate some of the overheating issues that may arise.
A**N
DO NOT BUY! HOUSING CRACKED IN 5 MINUETS!
thermostat housing cracked within the first 5 minutes of driving the vehicle after replacement. WOULD NOT EVER RECCOMMEND TRYING THIS PRODUCT ON YOU VEHICLE, IT MAY LEAVE YOU STRANDED AFTER IT CRACKS. The housing split after proper installation and driving normal speeds on the road. Smoke started to slowly rise from my engine bay, and upon pulling over i noticed the housing was cracked and pissing coolant everywhere, to where my fan spins the coolant around and kicks it all over the engine bay and all over the hood. Would never try this aluminum thermostat again.
D**E
looks good
It fits e46 m54b30. No issues with installation, looks awesome with the aluminum
A**L
Way better then plastic oem
So far so good. Way better quality then plastic one. Plastic one warps and leaks
K**S
Works as described great product
Working great no overheating and it works perfectly fine
F**S
Fit parfait bonne qualité
Trustpilot
2 months ago
2 weeks ago