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Mishimoto 15-20 BMW F8X M3/M4 Performance Auxiliary Radiator

Name: Mishimoto 15-20 BMW F8X M3/M4 Performance Auxiliary Radiator
Brand: Mishimoto
SKU: MISMMRAD-F80-15A
Price: 448.95 USD
Availability: InStock

The 2015-2020 BMW F8X M3 and M4 rely on auxiliary radiators mounted low in the front corners...

Vendor: Mishimoto

SKU: MISMMRAD-F80-15A

Product Type: Radiators

Regular price: $448.95
Regular price: ~~$494.00~~
Sale price: $448.95
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Mishimoto 15-20 BMW F8X M3/M4 Performance Auxiliary Radiator

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Description

The 2015-2020 BMW F8X M3 and M4 rely on auxiliary radiators mounted low in the front corners of the car to keep the S55 in its operating window. Under sustained track use and aggressive street driving, the factory units run out of cooling capacity and heat-soak between runs - and their low position leaves them exposed to road debris and the plastic end tanks prone to cracking under repeated heat cycling. The Mishimoto Performance Auxiliary Radiator replaces the stock unit with a larger, fully reinforced aluminum core engineered to add thermal headroom and survive the conditions that retire the OEM part early.----The core carries 9% more volume and 32% more external tube area than stock, rejecting more heat into the airstream when the engine is working hardest. Strutted tubes reinforce the core against the vibration and impacts that fatigue a low-mounted radiator, while removable stone guard shields the exposed face from debris. Aluminum, TIG-welded end tanks replace the failure-prone factory components, and a robust bracket design fits both the driver and passenger-side locations from a single part.----Direct fit for the 2015-2020 BMW F8X M3 and M4 - installs in the factory auxiliary radiator location with no cutting, fabricating, or adapter work required. Backed by the Mishimoto Lifetime Warranty.

Built for back-to-back track sessions - the upgraded auxiliary radiator adds the cooling capacity the S55 needs to hold temperatures through sustained high-load driving, where the factory unit heat-soaks and gives up margin.
Strutted tubes resist vibration and impact - internal tube reinforcement strengthens the core against the road vibration and debris strikes that fatigue a low-mounted radiator over time.
32% more external tube area for greater heat rejection - paired with a 9% larger core volume, the expanded core moves more heat into the airstream than the stock auxiliary radiator.
Mounts on either side of the car - a robust bracket design fits both the driver- and passenger-side auxiliary radiator locations, so a single part covers either position.
Confirmed direct fit for the 2015-2020 BMW F8X M3 and M4 - installs in the factory auxiliary radiator location with no cutting, fabricating, or adapter work required.
No plastic tanks to crack - aluminum, TIG-welded end tanks replace the factory components that fail under repeated heat cycling and high-output use.
Removable stone guard shields the core - protects the exposed face from road debris thrown up at the front of the car.
Own it for life - backed by Mishimoto’s Lifetime Warranty, your investment is protected long after install day.

This Part Fits:

Year	Make	Model	Submodel
2019-2021	BMW	M2	Competition
2020	BMW	M2	CS
2015-2018	BMW	M3	Base
2015-2020	BMW	M4	Base
2019-2020	BMW	M4	CS
2016	BMW	M4	GTS

Additional Information

If you have any fitment questions, please feel free to reach out to our team via the contact methods below. If you are contacting us for any order status updates, please give us a call, or email us. We are a lean operation bringing you the best shopping experience possible. We are working on your orders as quickly as we can. We thank you for your patience.

Call:: Please reach out to us at (310) 231-0292 for sales inquiries if you are in the United States, Canada, Mexico.

Email:: For more in-depth product questions, fitment questions, product inquiries please email our performance specialists at online@autotalent.com.

All other inquiries:: Please direct your inquiries to the chat functionality on our website.

Shipping & Return

Returns Policy

If a product is ordered and not wanted, the UNUSED item can be returned for a 25% restocking fee unless otherwise specified. In some cases, we may offer the ability to return the item to us for a lesser restocking fee and then keep the balance as a store credit. To return an item, it must be in brand new condition with original packaging.

We cannot accept a return on special ordered or custom items.

Shipping is non refundable in either direction unless approved by AutoTalent. All items wanting to be return MUST be reported within 30 days of the original invoice date. No items will be returnable after 30 days. All products shipped from the AutoTalent facility are shipped via FedEx, USPS, or USPS. Some packages shipped from the manufacturer may or may not require signatures for package release.

Special Order Items

Some items may be special order specifically for the customer’s vehicle. These items generally require a deposit or paid in full. Once this deposit amount is notified to the customer and they agree to order the special order item, the deposit becomes non-refundable. These special order items cannot be returned or resold. Cancellations are not allowed on special order parts.

AutoTalent DOES NOT REFUND SHIPPING CHARGES. If you modify, install, or alter the item in any form, we cannot accept it as a return. We will not cover any expenses related to the product or installation, and you may be required to purchase a replacement.

** All cancellations that are requested that are NOT due to items not being in stock or delayed by the manufacturer are subject to a 5% processing fee. When you place an order with us we pay credit card fees that are NOT returned back to us. We will absorb these fees if we do not have the item in stock OR if you agree to the original ETA and that ETA is NOT met. If you decide to cancel for any other reason you will not receive this 5% fee back

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.