Keep your BMW’s engine sealed and running at peak operating efficiency with Febi Bilstein’s premium rocker cover gasket. High-performance driving and relentless heat demand reliable engine sealing. A worn or hardening valve cover gasket allows crankcase oil seepage and unwanted air intrusion, which can throw off fuel trim balance and compromise throttle response. Febi Bilstein 188666 is manufactured from heat-resistant polyacrylate (ACM) to withstand aggressive heat cycles and oil exposure without hardening or cracking. Engineered as a direct fit for OE reference 11 12 8 638 124, this gasket gives track enthusiasts and street drivers the precision fit and heat tolerance necessary to maintain proper crankcase sealing under demanding conditions.
Key Features
Precision-molded for an exact fitment without binding or shifting.
Protects against oil leaks and unmetered air leaks to maintain engine tuning consistency.
Built to German aftermarket OE manufacturing standards.
Essential maintenance component for refreshing high-mileage or track-driven powerplants.
Specifications
Manufacturer: Febi Bilstein
Part Number: 188666
Cross Reference OE Number: 11 12 8 638 124
Material: ACM (Polyacrylate Rubber)
Component Type: Cylinder Head Cover Gasket
EAN: 4054224886663
Prop 65 Warning
Cross Reference
11128638124
Product Q&A
Lifetime Replacement
This product is not eligible for Lifetime Replacement
Fits These Cars
MAKE
MODEL
SUBMODEL
ENGINE
Special Fitment Notes
BMW
F22
M240i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F22
M240i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F23
M240i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F23
M240i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F30
340i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F32
440i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F32
440i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F33
440i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F33
440i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F34
340i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
BMW
G01
X3 M40i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
G02
X4 M40i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
G11
740i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
G11
740i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
BMW
G30
540i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
G30
540i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
BMW
G32
640i xDrive
B58 3.0L
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.
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