BMW 3 Series Radiator Cap
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In Stock
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FREE UK Delivery: On orders over £25
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Click & Collect: Branches nationwide
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Low Price Promise
Fitment Info
Brand Standard Please select your preferred brand or option-
SilverOriginal Equipment quality product in a GSF Own Brand
SilverOriginal Equipment quality product in a GSF Own BrandHome DeliveryAdd to BasketThis part is in stock for Home Delivery -
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In Stock
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FREE UK Delivery: On orders over £25
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Click & Collect: Branches nationwide
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Low Price Promise
Fitment Info
Brand BGA Pressure [bar] 1 Pressure [psi] 15 Please select your preferred brand or option-
SilverOriginal Equipment quality product in a GSF Own Brand
SilverOriginal Equipment quality product in a GSF Own BrandHome DeliveryAdd to BasketThis part is in stock for Home Delivery -
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FREE UK Delivery: On orders over £25
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Click & Collect: Branches nationwide
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Low Price Promise
Fitment Info
Brand Standard Pressure [bar] 1.2 Please select your preferred brand or option-
SilverOriginal Equipment quality product in a GSF Own Brand
SilverOriginal Equipment quality product in a GSF Own Brand -
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FREE UK Delivery: On orders over £25
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Click & Collect: Branches nationwide
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Low Price Promise
Fitment Info
Brand Standard Height [mm] 46 Pressure [bar] 1.4 Thread Size M52 x 3 mm Inner Thread [mm] M52 x 3 Outer Diameter [mm] 88 Please select your preferred brand or option-
SilverOriginal Equipment quality product in a GSF Own Brand
SilverOriginal Equipment quality product in a GSF Own Brand -
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In Stock
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FREE UK Delivery: On orders over £25
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Click & Collect: Branches nationwide
-
Low Price Promise
Fitment Info
Brand Standard Pressure [bar] 2 Material Plastic Inner Diameter [mm] 28.5 Outer Diameter [mm] 56 Please select your preferred brand or option-
SilverOriginal Equipment quality product in a GSF Own Brand
SilverOriginal Equipment quality product in a GSF Own BrandHome DeliveryAdd to BasketThis part is in stock for Home Delivery -
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In Stock
-
FREE UK Delivery: On orders over £25
-
Click & Collect: Branches nationwide
-
Low Price Promise
Fitment Info
Brand Standard Pressure [bar] 2 Material Plastic Outer Diameter 1 [mm] 88 Outer Diameter 2 [mm] 30 Please select your preferred brand or option-
SilverOriginal Equipment quality product in a GSF Own Brand
SilverOriginal Equipment quality product in a GSF Own BrandHome DeliveryAdd to BasketThis part is in stock for Home Delivery -
Understanding the Role of the Radiator Cap in Your BMW 3 Series
The radiator cap may seem like a small and inconspicuous component of your BMW 3 Series, but it plays a critical role in the maintenance and efficiency of the vehicle's cooling system. This cap is designed to maintain the correct pressure within the cooling system, preventing coolant from boiling over and ensuring that your engine operates at the optimal temperature.
Quality Radiator Caps for BMW 3 Series
When it comes to your BMW 3 Series, using a high-quality radiator cap is essential for the longevity and performance of your car. A faulty or ill-fitting radiator cap can lead to overheating, which can cause significant engine damage. It's important to choose a radiator cap that is compatible with the specifications of your BMW 3 Series to ensure proper pressure and sealing.
Signs of a Faulty Radiator Cap
Several signs may indicate that the radiator cap of your BMW 3 Series might need attention. These include visible coolant leaks, an overheating engine, or fluctuating temperature readings. If you notice any of these symptoms, it's crucial to inspect your radiator cap and cooling system for any issues.
Replacing Your BMW 3 Series Radiator Cap
Replacing the radiator cap on your BMW 3 Series is a straightforward process, but it's important to ensure that the replacement cap meets the manufacturer's specifications. Always allow the engine to cool down before attempting to remove the radiator cap to avoid injury from hot coolant or steam.
Explore Our Range of BMW 3 Series Cooling System Components
At our store, we offer a comprehensive selection of components for the cooling heating system of your BMW 3 Series, including high-quality radiator caps. Our parts are designed to meet or exceed the original equipment manufacturer's standards, ensuring your vehicle remains in peak condition.
For all your BMW 3 Series car parts needs, including a replacement radiator cap, visit our main parts page: 3 series BMW car parts. We are committed to providing you with top-quality parts and exceptional customer service.
Radiator caps
Find quality aftermarket radiator caps at GSF Car Parts. We stock reliable, long-lasting caps sourced from our reliable, trusted auto partners. Use the product finder to find the best match for your car's radiator by entering your vehicle's reg number or make and model.
What is a Radiator Cap?
A radiator cap is not just a standard cap. It regulates the maximum pressure inside the radiator, stopping any damage to the radiator hoses and the radiator itself. The radiator cap has a return valve installed that allows air in from the atmosphere or coolant from the expansion tank if you have one installed.
What are the Signs of a Broken Radiator Cap?
It could be a broken radiator cap if you notice any of these symptoms.
- Engine overheating
- Coolant leaking from the radiator
- A radiator hose that has collapsed
- The coolant reservoir tank overflowing
What Other Car Parts do we Stock?
Keeping your cooling and heating system in check is vital for keeping your car warm and your engine temperature running smoothly. We hold stock of cooling system spares for every eventuality, including full radiators, thermostats, water pumps, radiator fans, antifreeze, radiator mountings, and much more!
Those of you who love to work on your car at home can learn how to spot a radiator leak and perform a coolant flush with our handy knowledge hub guides. Check how your thermostat works and how to change it. And if you're new to car maintenance but want to learn, you can start by finding out what antifreeze is here.
We stock a full range of car parts and spares for other repairs or servicing on your car, from service, engine, transmission, exhaust, electrics, fuel and emissions, braking systems, and cooling and heating parts. All are sourced from our trusted and reliable auto partners.
Shop Radiator Caps at GSF Car Parts Online and In-Store
All our radiator caps are from trusted brands in the motoring industry, so you can count on them to be reliable and of excellent quality. Plus, our low-price promise means you can always expect great value too.
We offer free UK delivery on all online orders over £25, plus 60-day returns*. We also know you want to get your car up and running as soon as possible, which is why we offer a Click and Collect service that allows you to get your radiator cap in just an hour.
So, buy radiator caps from us with confidence today. Or if you’re close to one of our 180 store locations across the UK & Ireland, drop by. Our experienced staff will be able to direct you to the correct part for your vehicle.