BMW M5 F90 CNC Billet Aluminum Coolant Expansion Tank
FITMENT
WARRANTY
SHIPPING
CNC Billet Aluminum Coolant Expansion Tank for BMW M5 F90 S63 4.4L Twin-Turbo V8
Designed for the BMW M5 F90 powered by the S63 4.4L twin-turbo V8, this upgraded CNC billet aluminum coolant expansion tank provides a strong and durable replacement for the factory coolant reservoir.
Manufactured from high-quality CNC-machined aluminum, the tank offers significantly greater strength and long-term durability compared with conventional plastic reservoir construction while adding a premium motorsport-inspired appearance to the engine bay.
The rigid aluminum construction is resistant to heat, pressure and age-related material deterioration, making it an excellent replacement or preventative upgrade for performance-oriented and enthusiast vehicles.
The tank is designed around the factory BMW M5 F90 cooling system and OEM-style mounting position for straightforward integration with the original coolant system components.
This upgrade is intended primarily to improve reservoir durability and reliability. It does not function as a larger radiator or performance heat exchanger and should not be considered an engine cooling capacity upgrade.
KEY FEATURES:
- CNC billet aluminum construction
- Direct replacement coolant expansion tank
- Designed specifically for BMW M5 F90
- Designed for the S63 4.4L twin-turbo V8
- Increased durability over factory plastic reservoir construction
- Excellent resistance to heat and coolant-system pressure
- Corrosion-resistant aluminum construction
- Vehicle-specific mounting design
- Premium motorsport-inspired engine-bay appearance
- OEM reference: 17137889450
- Black or Gold finish options
- Professional installation recommended
PACKAGE INCLUDES:
- 1 × CNC Billet Aluminum Coolant Expansion Tank
- Installation Hardware
IMPORTANT NOTICE:
This product is a coolant expansion tank / reservoir upgrade designed to replace the factory reservoir. Professional installation is recommended. The cooling system must be correctly filled and bled after installation according to the appropriate BMW service procedure.