Coolant Expansion Tank

Product Details

Don't let a fatigued factory expansion tank jeopardize your chassis on the street or at the track. Modern BMW engines demand precise thermal management, but stock plastic expansion tanks are notorious for failing under continuous thermal cycling and high system pressure. The Febi Bilstein Coolant Expansion Tank delivers the structural strength and exact fitment required to keep your BMW's cooling system locked down under demanding driving conditions. Engineered to rigorous OE standards, this high-grade replacement tank eliminates vulnerable points in the cooling loop, ensuring dependable fluid containment and consistent temperature control when pushing your engine to its limits.

Key Features

• Motorsport-Grade Reliability: Durable construction engineered to resist pressure surges and temperature spikes during aggressive driving.

• Exact OE Replacement: Fits directly into factory location without modifications, ensuring clean routing for all coolant lines.

• Preventative Cooling Defense: Replaces aged, brittle plastic tanks before catastrophic leaks or pressure losses occur on the road or track.

• Quality Tested: Constructed to original equipment specifications for maximum pressure integrity and long-term durability.

Specifications

• Manufacturer: Febi Bilstein

• Part Number: 188343

• Component Type: Coolant Expansion Tank

• Fitting Position: Left

• Material: Thermoplastic

• Weight: 575 g

• EAN: 4054224883433

• OE Part Numbers: 17135A6A030, 17138742660, 17138610660

• Included Accessories: Tank unit only (expansion tank cap sold separately)

• Vehicle Fitment: BMW X3 (G01, F97) and BMW X4 (G02, F98)

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