CSF BMW B58 Gen 1 (M140I/M240I/340I/440I) High-Performance Radiator

CSF's High-Performance Radiator for the B58 Gen 1 platform is a direct-fit replacement for the OEM main coolant radiator, engineered for improved heat dissipation and long-term thermal reliability on both stock and tuned cars. It's compatible with the factory fan shroud, radiator hoses, and A/C condenser, giving you a genuine plug-and-play upgrade rather than a partial solution requiring additional fabrication.

Built to the same exacting standards as CSF's other B58 cooling components, this radiator is designed specifically for improved thermal efficiency and engine longevity - a sound upgrade whether you're chasing more power or simply want extra cooling margin as these engines age.

Important: this radiator (CSF #7089) is a direct-fit replacement for OEM part #17118482623 only. It will not fit vehicles equipped with the earlier OEM part #17118652497, found on early-build F30/F31/F34 340i and F32/F33/F36 440i models with build dates up to 07/2016. Check your VIN with a dealership or inspect the radiator's lower-left tank connections (single connection = #17118482623/compatible; dual connections = #17118652497/not compatible) before ordering.

Why Choose This Radiator

• Direct-fit replacement - compatible with factory fan shroud, hoses, and A/C condenser
• Improved heat dissipation - genuine thermal efficiency gain over the OEM unit
• Ideal for tuned or high-performance applications - supports better engine longevity under increased load
• True plug-and-play installation - no modification required
• Part of CSF's proven B58 cooling range - engineered alongside their heat exchanger and manifold products

Compatibility

• BMW F20/F21 M140i (B58 Gen 1)
• BMW F22/F23 M240i (B58 Gen 1)
• BMW F30/F31/F34 340i (B58 Gen 1, later build - verify VIN)
• BMW F32/F33/F36 440i (B58 Gen 1, later build - verify VIN)
• BMW F22/F23 230i, F30/F31 330i, F32/F33 430i (with M Sport Package)

Not compatible with: Early-build 340i/440i using OEM part #17118652497 (build dates up to 07/2016)

Part Number

• CSF #7089, replaces OEM part #17118482623 only