BMW 335i E92 Expansion Tank | Coolant Reservoir N54 Engine 2006–2011

Key Features (Bullet Points)

• Vehicle Compatibility – Designed for BMW 335i E92 models (2006–2011) with N54B30 engine
• Cooling System Support – Maintains proper coolant expansion and reservoir function for efficient engine temperature control
• Cost-Effective Replacement – Economical aftermarket alternative without compromising essential performance
• Durable Construction – Manufactured from quality materials for long-lasting reliability
• Direct Replacement Fit – Designed for easy installation using existing components

Product Description

This coolant expansion tank, also known as a radiator overflow bottle or water reservoir, is designed for BMW 335i E92 models (2006–2011) equipped with the N54B30 engine.

It plays a critical role in the vehicle’s cooling system by allowing coolant to expand and contract, helping maintain proper system pressure and engine temperature. Manufactured as an economical aftermarket replacement, this expansion tank offers reliable performance and accurate fitment.

Please note that this unit does not include a radiator cap. It is designed to be used with your existing cap, although replacing the cap during installation is recommended for optimal system performance.

Specifications

• Product Type: Coolant Expansion Tank / Radiator Bottle
• Vehicle Compatibility: BMW 335i E92 (2006–2011)
• Engine Code: N54B30
• Cap Included: No
• Condition: New

What’s in the Box

• 1 × Expansion Tank

Disclaimer

Please verify compatibility with your vehicle’s make, model, engine type, and production year before purchasing. This product does not include a radiator cap and requires reuse of the existing cap or a compatible replacement. Professional installation is recommended. The manufacturer and seller are not responsible for any damage or issues resulting from improper installation, misuse, or incorrect fitment.