Original BMW Radiator for BMW 2, 3, and 4 Series with B46 and B58 Engines (2016–2021)

On B46- and B58-powered BMW 2, 3, and 4 Series models from 2016–2021, this Original BMW radiator is the heat exchanger that pulls heat out of the engine coolant through its small fins. BMW names the part simply radiator, and this one is made in Poland. It is the central part of the cooling system, so its condition directly affects how well the engine holds its temperature. Most radiators fail when an end tank cracks and leaks coolant.

Original BMW Parts include a 24-month parts warranty.

BMW put this number into production in February 2017 and rates it as exchangeable retrospectively for the earlier radiator, 17-11-8-625-422, so it is the replacement for cars that left the factory with either number. Within this fitment the radiator does not change between the B46 and B58 engines, which means the 230i and M240i, the 330i and 340i, and the 430i and 440i all take the same part.

Technical Details

• Manufacturer: BMW, made in Poland
• Part number: 17-11-8-482-623
• BMW name: radiator
• Production start: February 2017
• Replaces: 17-11-8-625-422, exchangeable retrospectively
• Engines: B46 and B58
• Sold as: one radiator
• Warranty: 24 months on Original BMW Parts

Common Questions

What are the signs this radiator needs replacing?
Overheating, coolant leaks, visible cracking, and bent fins are the common signs. On higher-mileage cars the fins can also clog with debris, which stops the radiator from shedding heat and leads to overheating even without a leak.

Does this radiator fit a 2016 340i built before February 2017?
Yes. The 2016 340i and 340i xDrive are part of its fitment, and because BMW rates it as exchangeable retrospectively it takes the place of the earlier radiator those cars were built with.

Reach out to PMB Performance with any questions about F-chassis cooling parts.

Fitment & Compatibility

Use the fitment table below to confirm year, model, submodel, and application notes before ordering. PMB Performance has spent over 20 years matching parts to vehicles and can verify this against your VIN.