BMW F8X M2 M3 M4 Expansion Tank Coolant Reservoir with Cap – Fits S55 Engine Models | Part No. 17132284600 / 17117639021

Keep your high-performance BMW running cool and reliable with this OEM-style Expansion Tank Coolant Reservoir, designed specifically for F8X S55-powered models including the M2, M3, and M4. Over time, factory coolant tanks can discolor, crack, or develop leaks due to constant heat cycles—especially on turbocharged engines like the S55. A failing reservoir can lead to coolant loss, overheating, and serious engine damage if not replaced promptly.

This high-quality replacement reservoir restores your cooling system’s integrity and provides the proper pressure balance needed for efficient engine temperature regulation. It includes a new coolant cap, ensuring a secure seal to maintain system pressure and prevent coolant vapor loss.

Manufactured to meet OEM specifications, this tank offers reliable durability, perfect fitment, and a straightforward install for both DIY enthusiasts and professional technicians.

Key Features

• Direct replacement for Part No. 17132284600 / 17117639021
• Designed specifically for S55 engine BMW M models
• Prevents overheating caused by leaking or cracked expansion tanks
• Includes new coolant cap for a complete installation
• OEM-grade materials ensure long-term reliability under high-heat conditions
• Restores proper coolant pressure and system performance
• Plug-and-play fitment with no modifications required

FITMENT – BMW F8X S55 Models

• BMW M3 – F80
• BMW M4 – F82 Coupé, F83 Convertible
• BMW M2 Competition / M2 CS – F87

(Only models equipped with the S55 engine)

BAVMODS Part No: BAV0000114A

Please refer to the “Fitment” section in the product description for compatibility details.