G87 M2 SWEEPSTAKES
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G87 M2 SWEEPSTAKES
No purchase necessary. See official rules.
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Your Vehicle Audi C4 S4 Quattro 20v T
ECS Tuning recommends this product.

M52TU/M54 Heavy Duty Expansion Tank Kit

As expansion tanks age, they are prone to cracking or even exploding. Replace your factory plastic coolant reservoir with a Turner Heavy Duty aluminum tank for durability and piece of mind!
10X Entries For Our G87 M2 Sweepstakes!
Fan shroud/Expansion tank mounting will need trimmed to fit with Mishimoto radiator
Turner Motorsport
Mfg Part #
008363LA02
ECS Part #
ES#4690219
Brand
Turner Motorsport

SALE: 342.99 (30% OFF)
WAS: $489.99 on 08-09-2025

This product was last offered at the strikethrough price on
08-09-2025


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This product is lifetime replacement eligible Lifetime Replacement
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Product Details

10X Entries For Our G87 M2 Sweepstakes!
Fan shroud/Expansion tank mounting will need trimmed to fit with Mishimoto radiator

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.

Cross Reference
  • 17117573781
  • 17111436250
  • 17137553919
  • 17137787039

This Part Fits the Following Vehicles

Make Model Submodel Engine Special Fitment Notes
BMW E46 323Ci M52 2.5L Use vehicle selector to confirm fitment
BMW E46 323i M52 2.5L Use vehicle selector to confirm fitment
BMW E46 325Ci M54 2.5L Use vehicle selector to confirm fitment
BMW E46 325i M54 2.5L Use vehicle selector to confirm fitment
BMW E46 325xi M54 2.5L Use vehicle selector to confirm fitment
BMW E46 328Ci M52 2.8L Use vehicle selector to confirm fitment
BMW E46 328i M52 2.8L Use vehicle selector to confirm fitment
BMW E46 330Ci M54 3.0L Use vehicle selector to confirm fitment
BMW E46 330i M54 3.0L Use vehicle selector to confirm fitment
BMW E46 330xi M54 3.0L Use vehicle selector to confirm fitment
BMW E53 X5 M54 3.0L Use vehicle selector to confirm fitment
BMW E83 X3 M54 2.5L Use vehicle selector to confirm fitment
BMW E83 X3 M54 3.0L Use vehicle selector to confirm fitment
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

This Product Is Covered By Our Lifetime Replacement Program

Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.

If you have any questions, would like to learn more or are ready to place a replacement claim, click here!

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Return and Exchanges

Need to set up a return? Click here to begin: Return Process

All you need is your order number and email address.


New/Unused Product Returns

ECS Tuning will accept returns for unused products within 90 days of the ship date for a refund to the original payment method used. The customer is responsible for the return shipping costs and fees. If selecting to use a prepaid shipping label, the shipping cost will be deducted from the total refunded amount. All new/unused products must be new, unused and must be in the original packaging, including labeling, manuals, hardware, etc. Special order parts are non-refundable.

In the event that we find an error on our website or on behalf of an ECS Tuning Representative, we will provide a return shipping label from the original delivery location.

Refused Packages

Any domestic orders that are returned to ECS Tuning as refused by receiver or non-deliverable will be subject to a return handling fee and will be processed as a return in compliance with our standard return policy, including a 15% restocking fee.

Any international orders that are refused at the time of delivery will be subject to carrier abandonment of the package, at which time the ordered products would be discarded by the carrier. The customer will not be refunded for the value of the order and the discarded products are no longer retrievable.

Return Process

Return Process

ECS Tuning now offers an online returns solution! To get started, simply log into your ECS Tuning account, Click the "View Orders" button on the My Account home page and select the order that you wish to make a return on to begin. If you have any questions, feel free to reach out to our Customer Service Team for assistance!

Please note: Refunds will be processed to the original payment method used on the order or to an in store credit, respective to the type of return that is made as well as any pre-existing arrangements with an ECS Tuning Customer Service Representative. In the event that multiple forms of payment were used, we will refund the value to an in store credit. In the event that a return label is provided, these charges may be deducted from the total refund you receive.

Original shipping costs are non-refundable and the buyer is responsible for return shipping charges. ECS Tuning will not accept COD deliveries.


All in store credit balances will expire after one year from the original purchase date.

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Shipping Policy

Free Shipping On Orders $49 & Up

Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.

Free Shipping

Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.


The policies listed above are subject to change at any time without notice.

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Lifetime Replacement

Want to know more about our Lifetime Replacement program?

Click here to learn more.

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Why You Should Shop From ECS Tuning

ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.


Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.

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Cancellation Policy

At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.

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Manufacturer names and/or part numbers are used only for identification purposes.

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