Wagner intercooler radiator upgrade, BMW B48 / B58 GEN2

Wagner Tuning Competition Water Cooler Kit – Toyota Supra MK5 & BMW Z4 G29 (B58 Gen2)

Push the limits of your B58 Gen2 engine with the Wagner Tuning Competition Water Cooler Kit. Designed for the indirect charge air cooling circuit, this upgrade significantly improves cooling capacity compared to the stock unit. Perfect for high-performance builds, Stage 3 tuning, and demanding track use, it ensures lower intake temperatures and stable performance even under heavy load.

Key Features

• Upgrade water cooler for Toyota Supra MK5 and BMW Z4 G29 with the 3.0L B58 Gen2 turbo engine.
• Optimized for the indirect charge air cooling circuit.
• Greatly increased cooling capacity compared to the OEM core.
• Ensures lower intake air temperatures and more consistent performance under stress.
• Thermally conductive anti-corrosion coating for long-term reliability.
• Straightforward installation with near plug & play fitment and detailed instructions.

Performance Benefits

Compared to the factory cooler, the Wagner Competition unit increases coolant volume from 6.70 liters (OEM) to 16.90 liters while maintaining the same surface area for airflow. The result is drastically improved heat dissipation, reduced thermal load on the intake system, and consistent performance during extended spirited driving or track sessions.

Compatibility

Plug & play suitable for the following models:

• Toyota GR Supra MK5 (B58 Gen2)
• BMW Z4 G29 – M40i (B58 Gen2)

Technical Specifications

• OEM water cooler dimensions: 530 × 468 × 27 mm | V = 6.70 L | A = 2480 cm²
• Wagner water cooler dimensions: 530 × 468 × 68 mm | V = 16.90 L | A = 2480 cm²

Part Number

400001011

Instructions

• Download – Toyota Supra / BMW Z4 WATER COOLER INSTALLATION (pdf)