Description
The RK Autowerks S63TU4 Billet Coolant Reservoir is the ultimate upgrade for your 2018+ BMW M5 (F90) or 2019+ BMW M8 Coupe, Convertible, and Gran Coupe (F91, F92, F93). Designed and machined in-house, this high-performance billet aluminum reservoir is specifically built to replace the OEM plastic tank, which is notorious for leaking and causing damage to critical engine components. With an all-metal construction crafted from 6061 billet aluminum, this reservoir ensures long-term durability and prevents leaks, offering you peace of mind and a lifetime solution.
The RK Autowerks Billet Coolant Reservoir retains the stock OEM cap, maintaining the proper pressure bleed-off function as designed by BMW, and integrates seamlessly with all factory connections. The quick-connect fittings make installation a breeze, and the plug-and-play design ensures compatibility with the OEM sensor for coolant level readings. This product not only enhances the reliability of your cooling system but also provides an attractive, high-quality component that will last for years.
Why Upgrade?
The OEM plastic coolant reservoir is prone to cracking and leaking, which can result in coolant loss and potential damage to your injectors and coils. This issue can lead to costly repairs and downtime. The RK Autowerks Billet Coolant Reservoir is designed to eliminate these concerns by replacing the failure-prone plastic with a robust aluminum reservoir, ensuring your BMW’s engine remains protected.
Key Features:
- 6061 Billet CNC Construction – Precision-machined for strength and durability
- OEM Factory Cap Retained – Keeps pressure bleed-off function intact
- OEM Connections Utilized – Direct fit for stock connections and fittings
- OEM Sensor Utilized – Maintains accurate coolant level readings
- O-Ring Housing – Uses the OEM O-ring from the stock reservoir for a secure seal
- Internal Baffling – Reduces fluid transfer and ensures consistent coolant flow
Fitment:
- BMW M5 (F90) (2018+)
- BMW M8 Coupe, Convertible, and Gran Coupe (F91, F92, F93) (2019+)
Notes:
- Reuse the stock coolant sensor probe, which is removed from the OEM reservoir. In some cases, you may need to trim around the sensor to remove it.
- The O-ring is not included in the package. You will need to measure the original O-ring and source a replacement locally if necessary.
Upgrade your F90 M5 or F91 M8 with the RK Autowerks S63TU4 Billet Coolant Reservoir and ensure your cooling system stays leak-free and reliable for years to come.
The standard shipping rate applies to orders within the continental United States. If you intend to place an order outside of the continental US, please reach out to support@x-ph.com for assistance.
