Wagner intercooler radiator upgrade, BMW B48 / B58 Gen1

Wagner Tuning Competition Water Cooler Kit – BMW B48 & B58

Maximum performance for your BMW: the Wagner Tuning Competition Water Cooler Kit is the ultimate upgrade for vehicles with the 2.0L B48B20 or 3.0L B58B30M0 turbo engines. Developed for the indirect charge air cooling circuit, this kit reduces coolant temperatures and boosts charge air performance – perfect for both spirited street driving and competitive track use.

Key Features

• Upgrade water cooler for BMW models with 2.0L B48B20 and 3.0L B58B30M0 turbo engines.
• Optimized for indirect charge air cooling circuits with innovative cooling technology.
• Dedicated cooling water circuit reduces coolant temperature, improving charge air efficiency.
• Competition racing mesh increases radiator volume by 117% compared to stock.
• Maximized heat transfer while maintaining airflow to adjacent components (engine water cooler etc.).
• Thermally conductive anti-corrosion coating ensures long-term durability and reliability.
• Straightforward installation with near plug & play fitment and detailed instructions.

Performance Benefits

The Wagner Competition Water Cooler is designed to handle the extreme demands of tuned BMW engines. By increasing radiator volume from 7.70 liters (OEM) to 16.70 liters, and using a high-efficiency racing mesh, it achieves maximum cooling capacity without compromising surrounding components. This ensures lower operating temperatures, improved charge air cooling, and stable power output even under high load.

Compatibility

Plug & play suitable for the following BMW models:

• BMW 1 Series F20/F21 LCI (from 09/2015) – 120i, 125i, M140i, M140xi
• BMW 2 Series F22/F23 LCI (from 09/2016) – 220i, 230i, M240i
• BMW 3 Series F30/F31/F34/F35 LCI (from 09/2014) – 320i, 330i, 340i
• BMW 4 Series F32/F33/F36 LCI (from 03/2016) – 420i, 430i, 440i

Technical Specifications

• OEM water cooler dimensions: 576 × 495 × 27 mm | V = 7.70 L | A = 2851 cm²
• Wagner water cooler dimensions: 524 × 468 × 68 mm | V = 16.70 L | A = 2454 cm²

Part Number

400001002

Instructions

• Download – BMW B58 HEAT EXCHANGER INSTALLATION (pdf)