WGBAB Coolant Thermostat Housing Assembly with Sensors — N20 2.0L
by WGBAB
Key Features
- Includes integrated coolant sensors — no separate sensor purchases required
- Cross-references OE part numbers: 11538648791, 11538635689, 11537633476, and more
- Fits N20 2.0L engines across 228i, 320i, 328i, 428i, 528i, X1, X3, X4, X5, and Z4
- Reinforced material construction meets or exceeds BMW OEM durability standards
- Direct-fit replacement — no modifications, cutting, or adaptation required
- Restores proper coolant flow regulation to prevent overheating and engine damage
Product Details
- Brand
- WGBAB
- Category
- Thermostats & Housings
- ASIN
- B09C4DMH81
Check if it fits your BMW
WGBAB Coolant Thermostat Housing Assembly with Sensors — N20 2.0L — Overview
The N20 2.0L is one of BMW's most widely deployed four-cylinder engines, and its thermostat housing is a known wear point — when it fails, coolant leaks and erratic temperature readings follow fast. The WGBAB Coolant Thermostat Housing Assembly is a complete, sensor-integrated replacement built specifically for this engine family, covering a broad range of chassis including the 228i, 320i, 328i, 428i, 528i, X1, X3, X4, X5, and Z4. If your BMW is throwing cooling system faults or showing signs of a weeping housing, this is the all-in-one fix.
Where cheaper alternatives cut corners by omitting the sensors, this WGBAB assembly ships as a complete unit — sensors included. That means fewer parts to source, fewer potential leak points from mismatched components, and a faster turnaround on the repair. Fitment is verified against multiple OE part numbers including 11538648791, 11538635689, 11537633476, 11537588257, and 11538636594, so cross-referencing your existing part before ordering takes seconds.
Constructed from reinforced materials engineered to meet or exceed OEM specifications, this housing isn't a temporary patch — it's a proper, long-term solution. The direct-fit design means no drilling, trimming, or adapter hardware; it seats exactly as the factory unit did. For DIYers comfortable with basic cooling system work, this is a clean, confidence-inspiring swap.
Ignoring a compromised thermostat housing on an N20 BMW is a gamble that rarely pays off — overheating damage to the engine, head gasket, or auxiliary cooling components can turn a modest repair into a five-figure bill. The WGBAB assembly addresses the failure point directly, restoring stable operating temperatures and protecting the rest of your drivetrain without the dealership labor premium.
