The G8X platform pulls hard, and the ZF8 snaps off shifts like a dual clutch when temps are under control. But once you start tuning, running sticky tires, or doing back to back hot laps, transmission temps climb fast. When fluid gets too hot, shifts slow down and the car just does not feel as sharp. The CSF High Performance Automatic Transmission Cooler keeps temps in check so your M3, M4, or M2 stays crisp, responsive, and ready for the next lap.

CSF developed this cooler alongside real race teams and time attack builds. Track testing, data logging, and direct feedback shaped the final design. The goal was simple, increase capacity, improve heat dissipation, and keep factory fitment. The result is a dual core system that drastically improves cooling performance while maintaining plug and play installation. On track, teams reported noticeable reductions in transmission temperatures and more consistent shifting under heavy load.

Precision Engineered Design

Dual core design increases core and tank volume by 194 percent over OEM. Fluid capacity jumps by about 94 percent, 1700ml compared to 875ml factory. Two stacked 22mm cores create a total 44mm thickness versus the OEM 28mm core. Features 15 tubes and 16 rows per core section with 8mm fin height. Built using CSF AC condenser technology with a 1 row super high pressure 9 channel microtube design for optimal oil flow and maximum surface area contact. Dual pass configuration routes fluid front to back for improved heat transfer. Retains OEM style quick connect inlet and outlet connections and factory rubber seals for proper airflow. Includes a replaceable rock guard to protect against debris impact. Direct drop in fit with no modifications required.

Configuration Options

Single high performance transmission cooler configuration for ZF8 automatic equipped G8X models. Compatible with OEM cooling components and can be installed with the CSF high performance heat exchanger or factory system.

Exhaust Tips & Customization

Not applicable. This upgrade focuses strictly on transmission cooling and long term durability under aggressive driving.

Production & Lead Time

Manufactured with strict quality control to handle track abuse and high power street builds. Availability may vary depending on demand. Built to prioritize durability and performance over shortcuts.

Fitment

Replaces OEM Part Number 17118095284.

Benefits

• Dual core design with massive increase in volume
• 94 percent increase in fluid capacity over OEM
• 44mm total core thickness for greater heat dissipation
• Dual pass flow for improved cooling efficiency
• OEM style quick connect fittings for easy install
• Includes replaceable rock guard for added protection
• Maintains crisp shifting under heavy load
• Ideal for tuned and track driven vehicles
• 2 year limited warranty

NOTE: OFF ROAD USE ONLY