CSF High-Performance Auxiliary Radiator - BMW F87 M2 / B58 340i 440i M240i 2016-2021

CSF High-Performance Auxiliary Radiator - BMW F87 M2 / B58 340i 440i M240i 2016-2021

CSF SKU: CSF8355
Price
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This CSF auxiliary radiator upgrades the side-mounted coolers on the BMW F87 M2 and Gen 1 B58 cars (340i, 430i, 440i, M240i). Its 2-row 42mm core uses CSF's exclusive B-Tube technology with new 5mm ultra-efficient multi-louvered fins for increased tank volume and cooling capacity over the OE unit. The 100% TIG-welded all-aluminum build replaces the fragile OE plastic pod mounting with a stronger integrated frame, adds a detachable rock guard to protect against road debris, and drops in with no modifications. Sold individually; most applications use two.

Specifications

Type High-performance auxiliary radiator
Material 100% aluminum, TIG-welded
Core 2-row 42mm, CSF B-Tube technology
Fins 5mm multi-louvered
Inlet / Outlet OEM-style quick-connect
Finish Satin black
Fit Drop-in; fits both left and right side; sold individually (most applications use two)
Included Detachable rock guard
Part Number 8355
Warranty 2-year limited warranty

This part fits:

Year Make Model Submodel
2016-2018 BMW 340i Base
2017-2019 BMW 340i GT xDrive Base
2016-2018 BMW 340i xDrive Base
2017-2020 BMW 430i Base
2017-2020 BMW 430i Gran Coupe Base
2017-2020 BMW 430i xDrive Base
2017-2020 BMW 430i xDrive Gran Coupe Base
2017-2020 BMW 440i Base
2017-2020 BMW 440i Gran Coupe Base
2017-2020 BMW 440i xDrive Base
2017-2020 BMW 440i xDrive Gran Coupe Base
2016-2018 BMW M2 Base
2017-2021 BMW M240i Base
2017-2021 BMW M240i xDrive Base

Shipping

  • Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • Special order items follow a lead time we confirm with you individually before the order is committed.
  • Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
  • Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
  • International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

  • 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
  • Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
  • Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
  • Product images may be representative. The SKU and specifications in the listing are what ships.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Returns & Refunds · Warranty
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