BMW Billet Engine Coolant Expansion Tank Cap - MMR Performance MMR03-1502

Product Information

The engine coolant reservoir cap is a critical component of a vehicle's cooling system. It seals the coolant reservoir or expansion tank, which holds excess engine coolant and maintains pressure in the cooling system. The cap is designed to release pressure at a specified level, ensuring that the cooling system operates effectively without excessive pressure buildup.

• Coolant Leaks: A damaged or improperly sealed cap can lead to coolant leaking from the reservoir, which may be visible under the vehicle or around the reservoir itself
• Overheating Engine: If the cap fails to maintain the proper pressure, it can cause the engine to overheat due to a drop in the boiling point of the coolant, leading to inadequate cooling
• Low Coolant Levels: Frequent need to add coolant to the reservoir may indicate a faulty cap that isn’t sealing properly, allowing coolant to escape

About MMR Performance

MMR Performance products have been designed and developed in the UK with passion by enthusiasts, for enthusiasts. All of our products are created in the world's toughest development lab: motorsport. We push the limits and reach new heights on track; then refine our products to give you the performance you need when you want it on the road.

Our extensive range of BMW and MINI upgrades offer unrivaled quality, performance, and reliability worldwide; furthermore, every product carrying the MMR logo is thoroughly durability tested both on the road and track, so you can have complete peace of mind that you're installing only the best quality products to unlock the true performance potential from your car.

With a global distribution network MMR parts could not be easier to access, either choose your local dealer or alternatively the ability to purchase directly via our online store.