Wagner Tuning Radiator Kit – BMW 330i / M340i / 430i / M440i xDrive (G20 / G22, B48 / B58)

OVERVIEW

The G20 and G22 cars run their charge cooler inside the intake manifold, fed by a low-temperature coolant loop. Wagner Tuning's competition water cooler enlarges that loop's radiator — 14.67 liters against the factory 8.17 — which is the change that stops intake temperatures creeping upward on a tuned M340i or M440i during repeated hard use.

Wagner lists it for the xDrive versions of the G20 and G22/G23/G26 cars, and it pairs naturally with Wagner's B58 intake manifold and boostpipe parts.

SPECS

• Wagner radiator dimensions: 505 mm x 605 mm x 48 mm
• Volume: 14.67 liters vs 8.17 liters OEM — approximately 80% more
• Competition racing core with anti-corrosion coating
• Direct replacement using the factory mounting points; plug and play

PARTS INCLUDED

• Complete radiator kit as supplied by Wagner Tuning, with installation instructions; see the instructions for the full bill of materials.

TECH RESOURCES

Additional Parts Required

• Coolant. The low-temperature circuit must be drained, refilled and bled as part of the installation.

Installation

• Wagner Tuning 400001031 installation instructions (PDF)
• Wagner Tuning 400001031 radiator kit installation video (YouTube)

Notes

• xDrive models only. Wagner lists this kit for the xDrive versions of the cars below.
• Not compatible with B48C engines that do not use an intake manifold with integrated intercooler.
• Price is for parts only; labor is not included.

PART NUMBER

• 400001031

VEHICLE APPLICATIONS