BMW F90 M5 / F92 M8 / F93 M8 S63 D.R.P BILLET COOLANT EXPANSION TANK

BMW F90 M5 / F92 M8 / F93 M8 S63 D.R.P BILLET COOLANT EXPANSION TANK

$950.00
The Spec

The factory S63 coolant expansion tank is one of those parts that looks harmless until it becomes a problem. BMW has documented leakage and split-seam failures on the factory plastic reservoir used across F90 M5 and F9X M8 applications, and on these cars a leaking tank can become more than a simple coolant issue because of where the reservoir sits in the engine bay.

The D.R.P Billet Coolant Expansion Tank was built as the permanent-style upgrade this platform deserves. Machined from aluminium and designed to replace the factory plastic reservoir, it gives the cooling system a stronger, more heat-resistant foundation while completely transforming the look of the engine bay. No cheap plastic appearance, no oversized aftermarket styling — just a clean, precision-machined OEM+ piece designed for serious S63 builds.

Built for cars that see elevated engine-bay temperatures, increased boost, repeated pulls, track use, or simply owners who want to eliminate a known weak point before it becomes an expensive problem.

  • Features: CNC-machined billet aluminium construction, direct factory-location replacement, OEM-style hose and mounting provisions, improved resistance to heat cycling and material fatigue, premium machined finish
  • Fitment: BMW F90 M5 / M5 Competition, F92 M8 / M8 Competition, F93 M8 Gran Coupe / Competition
  • Engine: S63 4.4L twin-turbo V8
  • Brand: D.R.P Performance

Replace the plastic. Upgrade the weak point. Protect the build.