CSF 8025 BMW E90 / E92 / E93 M3 Engine Oil Cooler
CSF 8025 BMW E90 / E92 / E93 M3 Engine Oil Cooler is backordered and will ship as soon as it is back in stock.
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The CSF 8025 upgrades engine oil cooling on the S65-powered BMW E90, E92 and E93 M3. It uses an AeroFlow bar-and-plate core with cast aluminum end tanks and TIG-welded construction.
The eight-row cooler addresses the engine oil circuit rather than coolant temperature or DCT transmission oil. Its later-style oil-line connections make the production-date check particularly important on early E9X M3 cars.
Specifications
| Specification | Details |
|---|---|
| Part number / family | 8025 |
| Cooling circuit | Engine oil |
| Engine | BMW S65 4.0L V8 |
| Core | Eight-row AeroFlow bar-and-plate |
| End tanks | Cast aluminum |
| Assembly | TIG welded |
| Connection arrangement | Later-specification BMW oil lines |
Fitment and configuration: For cars built up to March 2008, CSF specifies updated BMW oil lines and O-rings to match the later connection arrangement. Check the build date and existing lines before ordering.
Vehicle applications
| Years | Vehicle | Engine / transmission | Notes |
|---|---|---|---|
| 2008-2012 | BMW E9X M3 | 4.0L V8 | — |
| 2013 | BMW E9X M3 | 4.0L V8 | — |
Product FAQs
What needs checking on an early 2008 M3?
Cars built up to March 2008 need the updated oil lines and O-rings specified for the later cooler connections. Build date and installed lines matter more than model year alone.
Does this cool the DCT transmission?
This product is the engine oil cooler. The 8042 has a separate transmission-dependent role on the E9X M3.
Does a larger oil cooler replace the coolant radiator?
No. Engine oil and coolant run in separate circuits, so the oil cooler does not replace the main radiator.
Related CSF cooling products
Pit Garage is an automotive service and performance parts shop in the Los Angeles area. Ask Pit Garage about selecting this cooling component for your engine, transmission and installed equipment.

