BMW B58 Radiator/Heat Exchanger OEM 17118625431 - Engine Coolant Cooler for F22 F23 F30 F32 F36 M240i 340i 440i RWD/xDrive - Genuine BMW OE Direct-Fit Main Radiator 3.0L - 2 Series 3 Series 4 Series

Original Equipment Cooling Radiator for BMW B58 3.0 Turbo Straight-Six

Restore dependable temperature control and protect your engine with this factory-original BMW heat exchanger. Designed for the B58 3.0-litre petrol straight-six, this direct-fit replacement brings back stable coolant temps, cures common overheating issues and keeps your F-series six-cylinder running sweet whether you are commuting, enjoying spirited B-road drives or heading to a track day. Part number: 17118625431.

Why this OE radiator is the right choice

• Genuine BMW component for precise fit with factory fan shroud, pipework and sensors
• Direct swap with the original main radiator for quick, hassle-free installation
• Engineered to manage heat soak on the B58, helping maintain consistent coolant temperatures
• Ideal fix for coolant leaks, cracked end tanks and degraded cores while preserving stock refinement
• Trusted in our workshop on customer vehicles with excellent reliability and cooling performance
• Compatible with 2 Series, 3 Series and 4 Series F-chassis models using the B58 3.0 petrol

Applications

Suitable for the BMW 2 Series Coupe and Convertible, 3 Series Saloon and 4 Series Coupe and Gran Coupe that use the B58 engine, including rear-wheel drive and xDrive variants:

• M240i and M240i xDrive
• 340i and 340i xDrive
• 440i and 440i xDrive
• F22, F23, F30 LCI, F32, F36 platforms

Not sure it suits your car? We offer a free fitment check before dispatch. Provide your UK registration or the last 7 of your VIN at checkout.

Performance and peace of mind

• OE-grade materials and construction to handle daily driving, motorway cruising and enthusiastic use
• Stable operating temperatures for better efficiency and long-term engine health
• Keeps the B58’s cooling circuit working as BMW intended without added noise or vibrations

Part number

BMW OE reference: 17118625431

Professional installation

We can supply and fit at MJ Modifications in Warwickshire. For a tailored installation quote, email info@mjmodifications.co.uk.

Warranty

Backed by BMW manufacturer warranty. UK customers typically receive two years cover and international customers one year cover when a valid VIN is supplied on compatible vehicles.

Search terms customers use

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Manufactured by

BMW Genuine Parts