Bosch is a global automotive parts and industrial technology manufacturer headquartered in Stuttgart, Germany. The company supplies original equipment and aftermarket components to major vehicle manufacturers worldwide. Bosch wiper blades are among the most widely replaced automotive consumables in the Swiss aftermarket.
The AR21U uses the Bosch Aerotwin attachment system. Compatibility depends on the vehicle's wiper arm type — verify the Aerotwin bayonet or push-button fitting matches your car's existing wiper arm before ordering.
This is a single wiper blade (Set: No). One AR21U unit covers one side of the front windshield. A second blade is required for the passenger side if needed.
Length: 530 mm. Total weight: 160 g (0.16 kg). The compact weight reduces strain on the wiper motor and arm assembly.
One Bosch WBA Aerotwin AR21U single front wiper blade. No additional hardware or adapters are included — the existing wiper arm is used directly.
24 months manufacturer warranty provides coverage against material and manufacturing defects. Register the product with Bosch to activate the full warranty term.
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