CSF High-Performance Auxiliary Radiator - BMW F8X M2 Competition / M3 / M4 2015-2021 - Black, Left or Right (Sold Individually)

CSF SKU: CSF8258
Price
Regular price $469.00
Regular price $499.00 Sale price $469.00
6% OFF
In Stock – Ready to Ship
Make sure this fits your vehicle Select your vehicle to confirm fitment before you order. Check
Shipping calculated at checkout.

CSF High-Performance auxiliary radiator for the BMW F8X M2 Competition, M3 and M4. CSF eliminated the OE plastic mounting pod and folded it into a modular housing that fits both the left and right side, freeing space for a larger 2-row 42mm core and bigger end tanks (roughly 7% more core, 10% more tank volume than OEM). The high-efficiency core uses CSF's exclusive B-Tube technology with 6.5mm multi-louvered fins, all in 100% all-aluminum TIG-welded construction with stronger metal mounting pins and brackets. A detachable bolt-on rock guard and satin black finish protect the core from road and track debris behind the grille. All applications require two units; sold individually.

Specifications

Type High-performance auxiliary radiator (fits either side; the right side unit is part of the charge air cooling system, the left side unit is part of the engine cooling system)
Material 100% all-aluminum, TIG-welded
Core 2-row, 42mm (CSF B-Tube technology)
Fins 6.5mm tall multi-louvered
Inlet / Outlet OEM-style quick-connect
Finish Satin black
Fit Drop-in fit, no modifications; fits both left and right side
Included Detachable bolt-on rock guard
Part Number 8258
Warranty 2-year limited warranty

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

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

  • 5 stars: 47 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Aaron Sanchez
The right part

Finally got around to installing this. The finish was clean and I did not notice anything bent or loose. Good enough that I would use it on another project.

J
Jean Patterson
Well packaged

The finish was clean and I did not notice anything bent or loose. It did what I needed without any drama.

B
Bobby Harper
Installed without a problem

Picked this up for a repair on my car. The part arrived in good shape, with no obvious shipping damage. It met my expectations.

A
Amelia Schmidt
Reliable fit for this project

I was comparing a couple of options before ordering. The price was a factor for me, and this seemed like a sensible choice. I spent more time on removal than fitting the replacement.

L
Layla Soto
Worked as intended

This ended up being the part I went with. The supplied part matched what I had ordered. I would still check the fitment details before ordering.

P
Patrick Sanders
Worth considering

I would still recommend double-checking the exact vehicle application. I would buy it again if I needed the same part.

E
Eleanor Riley
Fit was right

The installation was manageable and the part fit.

S
Stephen Bailey
Worth considering

I bought this after looking at the dimensions and application notes. I appreciated that the part looked like the photos rather than something completely different.

R
Rebecca Carr
good fit and finish

Good first impression. Time will tell on longevity.

S
Stella Boyd
Nice replacement

Needed a replacement and decided to try this one. It looked properly assembled out of the box. Happy to have the repair finished. I had a shop handle the installation.

H
Hazel Cruz
Everything checked out

I ordered it for a weekend project. It took a little time to line everything up, but nothing unusual for this kind of job. Overall a good experience.

P
Patricia Murphy
No surprises overall

This was part of a larger maintenance job. The first thing I checked was the mounting tabs, and everything looked consistent with the listing. The fan shroud and hose alignment were the main things I watched. Overall a good experience. I would compare part numbers before ordering.

A
Abigail King
Fit like it should on my car

The supplied part matched what I had ordered. I am satisfied with how it turned out.

A
Aurora Richards
Installed without a problem

The original part had seen better days. The dimensions were close to what I expected from the product description. I made sure the hoses and fan shroud were positioned correctly. I am satisfied with how it turned out.

M
Megan Burns
Pleased with this one

It was nice not having to improvise around the mounting locations. No complaints from me at this point.

S
Sarah Arnold
Looks well made on my car

I needed to get the car back together without making the job more complicated. I was mostly concerned about fitment, and that turned out fine on my setup.

A
Ann Gonzalez
Better fit than I expected

Needed a replacement and decided to try this one. No surprises when I held it up next to the original component. The fan shroud and hose alignment were the main things I watched. I will update my opinion if anything changes over time.

L
Lucy Ramirez
Would order again overall

The original part had seen better days. No surprises when I held it up next to the original component.

A
Ashley Wagner
the right part

Finally got around to installing this. No surprises when I held it up next to the original component. So far, I am happy with the purchase.

B
Bruce Berry
Matched the original overall

Good packaging, clean part, no obvious defects.

J
Julia Meyer
Matched the original so far

I needed to get the car back together without making the job more complicated. The part arrived in good shape, with no obvious shipping damage. I made sure the hoses and fan shroud were positioned correctly. A reasonable option if the application is right. I took photos before removing the old one.

B
Benjamin Butler
Better fit than I expected

I needed to get the car back together without making the job more complicated. The supplied part matched what I had ordered. I checked for leaks after refilling the cooling system. Would consider this brand again for another repair.

O
Olivia Perry
Straightforward install

Good packaging, clean part, no obvious defects.

P
Pamela Brooks
Satisfied with the result

Got this for a vehicle I have been working on. I was mostly concerned about fitment, and that turned out fine on my setup. Nothing to complain about so far. I would compare part numbers before ordering.

S
Stella Robinson
Looks well made

This ended up being the part I went with. I took my time with the installation rather than rushing through it. Happy to have the repair finished. I took photos before removing the old one.

M
Michelle Johnson
No modifications needed

I cannot speak to years of durability yet, but the initial impression is positive. Happy to have the repair finished.

J
Jayden Ryan
Nothing fancy, works well

Everything lined up on my application.

T
Timothy Parker
Solid for the price

I took a chance on this after checking the specifications. I checked the connections twice before finishing the job.

J
James Stephens
Solid component

I was comparing a couple of options before ordering. I was mostly concerned about fitment, and that turned out fine on my setup. No complaints from me at this point. I had a shop handle the installation.

J
John Berry
Good replacement part after installation

I bought this after looking at the dimensions and application notes. It took a little time to line everything up, but nothing unusual for this kind of job. It seems like a fair value for the money.

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