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)
Prop 65 Warning
Cross Reference
17135A6A030
17138610660
17138742660
Product Q&A
Lifetime Replacement
This product is not eligible for Lifetime Replacement
Fits These Cars
MAKE
MODEL
SUBMODEL
ENGINE
Special Fitment Notes
BMW
F97
X3 M
S58 3.0L
Use vehicle selector to confirm fitment
BMW
F98
X4 M
S58 3.0L
Use vehicle selector to confirm fitment
BMW
G01
X3 M40i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
G01
X3 sDrive30i
B46 2.0L
Use vehicle selector to confirm fitment
BMW
G01
X3 xDrive30i
B46 2.0L
Use vehicle selector to confirm fitment
BMW
G02
X4 M40i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
G02
X4 xDrive30i
B46 2.0L
Use vehicle selector to confirm fitment
*The above product applications have been written by Turner Motorsport. All
warranties, product application, fitment, and performance are the responsibility of Turner Motorsport.
For additional information see the terms of use.