CSF BMW S58 M2/M3/M4 (G87/G80/G81/G82/G83) Transmission Oil Cooler

Transmission oil temperature has a major impact on shifting performance in the ZF8 automatic - once fluid passes its optimal temperature range, shifting starts to feel delayed and sluggish. The real concern is what you don't notice: the gradual, ongoing damage being done to a very expensive and important component, often without any obvious warning sign until it's too late. The factory transmission cooler is adequate for the G8X in stock form, but starts to come up short on modified or tuned cars, especially those seeing heavy track or competition use.

CSF's Race-Spec Dual-Core cooler was developed with direct feedback from Global Time Attack-competing race teams running G8X cars hard, week after week. Moving from the OEM's single-core to a genuine dual-core design increases overall core and tank volume by 194%, with fluid capacity up by ~94% (1700ml vs the OEM's ~875ml). Two 22mm stacked cores create a 44mm total core thickness versus the OEM's 28mm, and the rear cooler alone carries 16 rows versus the OEM's 14, using CSF's AC condenser technology with a super-high-pressure 16mm, 9-channel microtube design for optimal oil flow and maximum surface area contact. A replaceable rock guard protects against the well-documented risk of road or track debris punching through the front grille and damaging the cooler.

Works with: ZF8 automatic transmission only - can be installed alongside CSF's Front Mount Heat Exchanger or with the OEM cooling system.

Why Choose This Transmission Cooler

• 194% increase in core and tank volume - genuine dual-core design, not a marginal upgrade
• 94% more fluid capacity - 1700ml vs the OEM's ~875ml
• 44mm total core thickness - two 22mm stacked cores vs the OEM's single 28mm core
• 16-row rear cooler - versus the OEM's 14 rows
• Replaceable rock guard included - genuine protection against debris damage
• True drop-in fit - OEM quick-connects and top/bottom rubber seals retained, no modification required

Compatibility

• BMW G87 M2 (2023+, S58, ZF8 automatic only)
• BMW G80 M3 (2021+, S58, ZF8 automatic only)
• BMW G81 M3 Touring (2022+, S58, ZF8 automatic only)
• BMW G82 M4 Coupe (2021+, S58, ZF8 automatic only)
• BMW G83 M4 Convertible (2021+, S58, ZF8 automatic only)

Not compatible with: Manual transmission G8X models

Part Number

• CSF #8221, replaces OEM part #17118095284