Vaico V20-1879 Radiator Cap

Vaico Radiator Cap for BMW and Mini

The Vaico V20-1879 radiator cap is an OE-style replacement for select BMW and Mini cooling systems that use a reservoir-mounted cap. Built to the listed pressure rating and thread specification, it helps maintain proper system pressure in applications such as BMW 230i, 330i, 540i, X5, and Mini Cooper models.

Key Features

• Part number: V20-1879
• Pressure rating: 1.4 bar
• Inner thread: M46 x 3
• Outer diameter: 60 mm
• Height: 27.5 mm
• Length: 60 mm
• Width: 60 mm
• Brand line: VAICO

Product Details

Vaico V20-1879 is a radiator cap designed for reservoir and auxiliary cooling applications across a wide range of BMW and Mini vehicles. The 1.4 bar pressure specification supports the cooling system’s ability to hold pressure at the reservoir cap, while the M46 x 3 internal thread and 60 mm outer diameter help match the listed applications. This part cross-references Febi-Bilstein 36772 for the same application.

Compatible With BMW 230i, 2017; BMW 230i xDrive, 2017; BMW 330i, 2017; BMW 330i GT xDrive, 2017; BMW 330i xDrive, 2017; BMW 340i, 2017; BMW 340i GT xDrive, 2017; BMW 340i xDrive, 2017; BMW 430i, 2017; BMW 430i Gran Coupe, 2017; BMW 430i xDrive, 2017; BMW 430i xDrive Gran Coupe, 2017; BMW 440i, 2017; BMW 440i Gran Coupe, 2017; BMW 440i xDrive, 2017; BMW 440i xDrive Gran Coupe, 2017; BMW 530i, 2017; BMW 530i xDrive, 2017; BMW 540i, 2017; BMW 540i xDrive, 2017; BMW X1, 2016-2017; BMW X5, 2016-2017; BMW X6, 2016-2017; Mini Cooper, 2014-2017; Mini Cooper Clubman, 2016-2017; Mini Cooper Countryman, 2014-2017.

What It Helps Address

• Loss of cooling system pressure at the reservoir cap
• Cracked, worn, or leaking radiator cap sealing surfaces
• Incorrect cap fitment on reservoir-mounted BMW and Mini cooling systems
• Pressure-related coolant loss in auxiliary or charge air cooling circuits
• Service replacement for aging expansion tank cap assemblies

Installation Notes and Tips

Verify the thread size, outer diameter, and pressure rating before installation. This cap is listed for reservoir-location applications, so confirm the vehicle’s cooling system uses the same cap style and specification. Inspect the sealing surface and reservoir neck for damage before fitting the new cap. For BMW and Mini applications, match the part to the exact cooling system listed for the vehicle, since some models use different caps for engine cooling, charge air cooling, inverter cooling, or HVAC-related circuits.

Quality Assurance

VAICO is the listed brand line for this replacement cap, and the part is cataloged with detailed dimensional and pressure specifications to support accurate selection. Part number V20-1879 is also referenced in interchange listings for cross-checking during parts lookup.