Turner Motorsport's heavy duty expansion tank is an excellent upgrade or preventative maintenance item that addresses all of the issues with factory M52/M54 expansion tanks. Direct fit with no modifications. In addition to the aluminum expansion tank, this kit includes a new expansion tank cap, new coolant level sensor, and more.

Don't be a part of the stigma that BMW's are unreliable, they are well engineered and made to drive. Unfortunately BMW's Achilles heel is the cooling system. Factory plastic expansion tanks are known to crack, explode or the plastic nipple for the return line breaks off. If your vehicle has a plastic expansion tank and it is still intact after years of heat cycling, consider yourself lucky - however, it is not a question of whether or not it will fail, it is a question of when it will fail. When your expansion tank fails it could leave you stranded on the side of the road or with a mess of coolant covering everything under your hood. Install the Turner aluminum expansion tank before it is too late!

Chances are your BMW needs a new expansion tank right now, make sure this is the last expansion tank you ever buy. With a full aluminum construction and wrinkle black powder coat, this expansion tank will be durable and the last expansion tank you will ever need purchase. One and done, make sure the job is done correctly and fixed forever. This kit comes with all the components you need to replace your expansion tank the right way and get back to enjoying your BMW.

Kit includes:

• Turner Aluminum Expansion Tank
• Coolant level sensor
• Expansion tank cap
• Flared coolant pressure release line
• Hardware for installation

Product Features:

• Maintains stock coolant capacity and expansion volume
• Designed to maintain OE coolant elevation, preventing air pockets
• Baffled tank ensures that air pockets cannot be introduced during aggressive driving and provides accurate coolant level reading
• Carefully designed bleed passage prevents the introduction of air as the engine cools
• Turner engraved internal fill level
• TIG welded 5052 aluminum construction
• All bungs are machined to fit factory hose ends

PRODUCT DEVELOPMENT

• Turner expansion tanks are designed, engineered, tested and quality inspected by the Research and Development team at Turner. Nothing but the highest level of precision and quality through leading-edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer and rigorous long term product testing.