Bosch Clear Advantage Front Windshield Wiper Blade, 21 Inch for Porsche 981/718 Boxster/Cayman, 991, 918 Spyder, Panamera (2010–2024)

This Bosch Clear Advantage 21-inch front windshield wiper blade is a direct-fit replacement for Porsche Boxster (2013–2016), Cayman (2014–2016), 718 Boxster (2017–2024), 718 Cayman (2017–2024), 718 Spyder (2020–2024), 991 (2012–2018), 918 Spyder (2015), and Panamera applications. Bosch has been a global leader in automotive technology since 1886, pioneering innovations like electronic fuel injection and oxygen (lambda) sensors that shaped modern engine management. Today, Bosch supplies OEM-quality sensors, engine electronics, ignition components, and braking parts found in vehicles worldwide. Known for precision engineering and reliable performance, Bosch parts are built to factory specifications for dependable fitment and long-term durability.

Technical Details

• Manufacturer part number: 21CA
• Series: Clear Advantage
• Blade length: 21 in
• Construction: Beam-style single blade
• Graphite-treated wiping edge for lower friction and quieter wipe action
• Aerodynamic spoiler helps maintain contact at speed
• Single blade; verify exact left/right use by application

Fitment & Compatibility

Use the fitment table below to confirm exact year, model, and any application notes. On single-blade listings, left/right use can vary by chassis, so check the table before you order.

If you want us to check the application before you order, send us your VIN. We’ve been helping with Porsche fitment questions for over 20 years, and we’d rather get the blade choice right than guess.