CSF

CSF BMW M3/M4 (G8X) Transmission Oil Cooler w/ Rock Guard - 8221

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SKU:
CSF8221
UPC:
710353082218
MPN:
8221
Availability:
Regularly stocked product
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MSRP: $629.00
$599.00
— You save $30.00
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Description

Is this CSF transmission cooler compatible with my 2023 M3?
CSF Transmission Oil Coolers are engineered as a direct fit for your 2021-2025 BMW M2, M3, and M4 models.

How much more fluid can this CSF transmission cooler hold compared to the stock unit?
This CSF transmission cooler provides a substantial 94 percent increase in fluid capacity over the original equipment manufacturer unit.

CSF Transmission Oil Coolers deliver unparalleled cooling efficiency for 2021-2025 BMW M2/M3/M4, boasting a 194% increase in core and tank volume. Its 1-Row Super-High Pressure 16mm 9-Channel Microtube design provides superior thermal management. Experience race-ready transmission performance and extended reliability with this advanced cooling solution.

What Owners Say

Owners and enthusiasts praise CSF transmission oil coolers as true plug-and-play upgrades that deliver meaningful cooling improvements during hard driving, with some reporting rock-solid oil temperatures under demanding conditions. The units are valued for their flow capacity—tested at 30% better than factory—and straightforward installation requiring no modifications. However, fitment quality draws mixed feedback, with some users reporting disappointing results and only marginal temperature drops of around 3°F in certain applications. The coolers are generally recognized for their engineering focus on sustained performance rather than peak power gains, earning respect among those seeking longevity and consistent cooling capacity during track use.

Key Features

  • 1-Row Super-High Pressure 16mm 9-Channel Microtube
  • 94% Increase in Fluid Capacity Compared to OEM
  • 16 Rows vs. OEM 14 Rows
  • 191mm Overall Height vs. OEM 155mm
  • Two 22mm Stacked Cores = 44mm Core Thickness vs. OEM 28mm Core Thickness
  • 194% Increase in Core & Tank Volume

Why Choose the CSF Transmission Oil Coolers

Delivers superior thermal management for consistent, race-ready transmission performance.

Achieves significantly cooler fluid temperatures, extending transmission life and reliability.

Provides enhanced cooling capacity for aggressive driving and track day endurance.

Transforms your driving experience with unwavering transmission stability under extreme loads.

Who Is This For?

Track / Autocross — 9/10
Significantly increased fluid capacity and core volume enhance cooling.

Street Performance — 8/10
Improved cooling supports sustained high-performance driving.

Racing Competition — 9/10
Superior cooling efficiency for demanding racing conditions.

Daily Driving Comfort — 7/10
Better heat management can improve transmission longevity.

Easy DIY Install — 8/10
Designed as a drop-in replacement for straightforward installation.

Frequently Asked Questions

What is the installation process for CSF Transmission Oil Coolers?

Installation of this CSF Transmission Oil Cooler is designed as a straightforward drop-in replacement. Its 'Easy DIY Install' rating of 8 signifies a manageable process for many enthusiasts. This ensures a confident and efficient upgrade to your vehicle's cooling system.

How does the CSF Transmission Oil Cooler improve performance on the track?

Achieving superior thermal management for consistent, race-ready transmission performance is a key benefit. With a 'Track / Autocross' usage score of 9, this cooler significantly increases fluid capacity and core volume for enhanced cooling. Experience unwavering transmission stability under extreme loads.

What are the technical differences between this CSF cooler and the OEM unit for a 2021-2025 BMW M4?

This CSF cooler features two 22mm stacked cores for a 44mm core thickness, compared to the OEM 28mm thickness. It also boasts a 94% increase in fluid capacity and 16 rows versus the OEM 14 rows. These advancements provide significantly cooler fluid temperatures, extending transmission life and reliability.

What are the benefits of using a CSF Transmission Oil Cooler for street performance driving?

Improved cooling supports sustained high-performance driving with a 'Street Performance' usage score of 8. This CSF unit delivers superior thermal management, achieving significantly cooler fluid temperatures. Transform your driving experience with enhanced transmission stability and extended component reliability.

Additional Resources

Official CSF Product Page

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Additional Information

Clearance Item:
N
MPN:
8221
Proposition 65:
N
Case Lot Quantity:
1
Category:
Cooling>Transmission Coolers
Install Type:
Drop-In
Product Level:
Premium Performance
Track / Autocross:
9/10
Street Performance:
8/10
Racing Competition:
9/10
Daily Driving Comfort:
7/10
Easy DIY Install:
8/10
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