# Windshield wiper blades set Bosch Aerotwin Flatblade A621S, front pair, beam-style

**URL:** https://aio.lv/en/product--bosch-a621s--11891860
**Data updated:** 2026-03-10 00:08 (EET)
**Category:** Car Accessories
**Manufacturer:** Bosch
**Manufacturer code:** A621S
**EAN:** 4047026369113
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Bosch Aerotwin Flatblade A621S is a pair of beam-style windshield wiper blades designed for front window wiping. These flatblade wipers feature a low-profile, frameless design for even pressure distribution along the blade and reduced wind lift. Intended for replacing original equipment wipers, they suit passenger cars and improve water removal and visibility in rain and wet conditions.

## Long description

Bosch Aerotwin Flatblade A621S is a front pair of beam-style windshield wiper blades designed to replace original equipment wipers on compatible passenger cars. The frameless, low-profile construction ensures uniform pressure along the wiping edge for consistent contact with the windshield surface. The design reduces wind lift at higher speeds and helps maintain clear visibility by efficiently removing water and light debris in wet weather conditions.
Advantages
The beam-style construction delivers even pressure distribution and a continuous wiping surface without the interruptions of traditional frames. The low-profile, aerodynamic shape reduces wind noise and lift while driving at speed. Rubber wiping elements are engineered to provide effective water removal and streak-free performance across the windshield. The pair is intended for front-window application and is manufactured to fit vehicles that accept beam-type replacement blades.
Suitable for
 Passenger car front windshield replacement
 Improving visibility in rain and wet conditions
 Vehicles originally equipped with beam-style or flatblade wipers
Key specifications
 Type: Beam-style (flatblade) wiper blades, front pair
 Design: Frameless, low-profile aerodynamic shape
 Application: Front windshield wiping for passenger cars
 Material: Elastomeric rubber wiping element with supportive spine
 Performance features: Even pressure distribution, reduced wind lift, streak-reducing wipe
How to use
Remove the existing front wiper blades following the vehicle manufacturer's instructions and select the correct orientation for the replacement pair. Fit each Bosch Aerotwin Flatblade onto the wiper arm connector until it locks into place; ensure the blade is securely attached and that the wiping edge aligns evenly with the windshield. Test the operation at low speed and with washer fluid to confirm a full, even sweep and proper contact across the glass.
Usage recommendations
Replace both front wiper blades together for balanced performance and inspect blades periodically for wear, cracking, or hardening of the rubber. Clean the windshield and the wiping edge regularly to prevent abrasion and to maintain optimal wiping effectiveness. If heavy icing or damage is present, avoid using the wipers on a frozen windshield to prevent premature wear; remove ice by hand or use a defroster first.

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### What is the warranty period?

All Bosch products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Bosch service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

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