CSF BMW F9X X3M/X4M & G0X X3/X4 M40i Cooling Module (Heat Exchanger + Trans Cooler)
CSF BMW F9X X3M/X4M & G0X X3/X4 M40i Cooling Module (Heat Exchanger + Trans Cooler)
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The F97 X3M and F98 X4M share the S58 engine with the G8X M2/M3/M4, and the same heat issues. CSF's front-mount Cooling Module combines an upgraded heat exchanger and a dual-core transmission cooler in a single unit, solving two cooling problems at once.
Design & Engineering
Space constraints and the X3M/X4M's transmission cooler cradle limit how large a standalone heat exchanger can be. By combining the heat exchanger and transmission cooler into one module, CSF was able to run the same size core as its G8X heat exchanger.
Heat Exchanger
TIG-welded aluminum tanks are much larger and stronger than the OE plastic tanks. A larger 2-row 42mm core with CSF's B-Tube Technology and multi-louvered fins increases cooling efficiency and recovery. 100% aluminum construction, stronger mounting tabs and brackets, and an integrated metal rock guard.
| Feature | CSF | OEM |
|---|---|---|
| Core Width | 42mm | 28mm |
| Core Rows | 2-Row | 1-Row |
| Fin Height | 6.5mm | 6.3mm |
| Tank Material | All-Aluminum | Plastic |
| Construction | 100% TIG-Welded | Crimp-on Gasket |
Transmission Cooler
A front-to-back stacked dual-core design more than doubles surface area and increases core volume by 201% over the OEM single-core cooler, while still fitting in the OEM position with no modifications. A rock guard protects the cooler at the front of the cooling stack.
| Feature | CSF | OEM |
|---|---|---|
| Core & Tank Dimensions | 527 x 188 x 44mm | 554 x 87 x 30mm |
| Tubes & Fin Rows | 15 Tubes & 16 Rows | 8 Tubes & 7 Rows |
| Fin Height | 8mm | 8mm |
| Design | Dual Core, Dual Pass (front to back) | Single Core, Dual Pass (bottom to top) |
Features
- Significantly reduces intake air temperatures (IATs) with faster heat-soak recovery
- Improves airflow to the rest of the cooling system for lower engine coolant temperatures
- Heat exchanger: 2-row 42mm core, 6.5mm multi-louvered fin with B-Tube Technology
- Heat exchanger: upper rock guard and transmission cooler mounting kit, hand-brushed satin finish
- Transmission cooler: dual-core design, 201% increase in core volume
- Transmission cooler: AC Condenser Technology, 1-row super-high-pressure 16mm 9-channel microtube
- Pre-installed foam strips for improved sealing
- CNC-machined mounting brackets and OEM-style quick-connect inlet/outlet
- 100% aluminum TIG-welded construction
- Plug-and-play drop-in fit on X3M/X4M
- 2-Year Limited Warranty
Applications
| Years | Chassis | Model | Engine |
|---|---|---|---|
| 2020-2024 | F97 | X3 M / X3 M Competition | S58 3.0L Twin-Turbo I6 |
| 2020-2025 | F98 | X4 M / X4 M Competition | S58 3.0L Twin-Turbo I6 |
| See notes | G01/G02 | X3 / X4 M40i | B58 3.0L Turbo I6 |
⚠ Fitment Notes: G01 X3 / G02 X4 M40i
LCI and Pre-LCI built after 08/2019 (B58D): the heat exchanger is a direct replacement for OE 17-11-9-468-695. The transmission cooler is not a direct replacement for OE 17-21-9-487-254, but it connects to the OE lines and mounts directly to the CSF heat exchanger. Minor line positioning adjustments may be needed.
Pre-LCI built before 08/2019: these models have no external air-to-oil transmission cooler, so the CSF transmission cooler cannot be connected without modification (factory post-08/2019 thermostat and lines, or a custom AN setup). Verify your build date by VIN before ordering. Contact us for details.
OEM Part Numbers Replaced
- BMW 17 11 9 468 695
- BMW 17 11 8 693 360
Warranty
CSF warrants its High-Performance Cooling Systems, under normal use and service, to the original purchaser of the vehicle in which the product was originally installed. SKU #8331 warranty term: 2 years.
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