# Bosch Aerotwin wiper blade set A 843 S

> 550 + 550 mm flat-blade windscreen set for the Mercedes C-Class W205

- **Brand:** [Bosch](https://car-parts-universe.superfast.shop/en/brands/bosch.md)
- **Art. no.:** 3 397 009 843
- **Category:** [Wipers and lighting](https://car-parts-universe.superfast.shop/en/wipers-and-lighting.md) › Wiper blades
- **Price from:** €24.00 excl. VAT (€29.04 incl. VAT)

## Summary

Aerotwin flat-blade pair for the windscreen: 550 mm driver side and 550 mm passenger side, with the MBTL1.1 connector already fitted. Bosch lists it for the Mercedes C-Class W205.

## Fits

| Vehicle | Engine | Engine code | kW | Years | Position | Note |
|---|---|---|---|---|---|---|
| Mercedes-Benz C-Class W205 | 2.1 OM651.921 170 hp | OM651.921 | 125 kW | 2014–2018 | Driver side, Passenger side | Listed for C 220 d; left-hand drive. Bosch also lists set 3 397 118 969 (VATL2.1 fastening) for this car without saying which applies; check the arm. |

## OE numbers

| Maker | OE number |
|---|---|
| Mercedes-Benz | 205 820 45 03 |
| Mercedes-Benz | 205 820 57 00 |
| Mercedes-Benz | A 205 820 45 03 |
| Mercedes-Benz | A 205 820 57 00 |

## Why this one

- **Adapter already fitted**: MBTL1.1 connector on the blade from the box; no adapter kit to sort.
- **Driver and passenger pair**: 550 mm driver side and 550 mm passenger side.
- **Twin spring rails**: Frameless design spreads arm pressure evenly for a clean, quiet wipe.
- **Power Protection Plus**: Bosch rubber compound made for a long, quiet service life.

## On the job

### Straight onto the original arm

A matched pair for the Mercedes C-Class W205, built to the length and connector the car came with. The MBTL1.1 adapter sits on the blade from the box, so fitting is a matter of unclipping the old blade and clicking the new one on. Two spring rails and a spoiler profile keep the rubber pressed flat against the glass at motorway speed.

### Worth doing at the same time

Replace both sides together; the passenger blade wears just as fast. Clean the screen and check the washer jets while the arms are up, since a dirty screen or a weak jet shortens rubber life. Check the wiper arm springs too; a weak spring leaves streaks whatever blade is fitted.

## Specifications

### Wiper blade

| Specification | Value |
|---|---|
| Blade type | Flat (beam) |
| Length | 550 mm |
| Length passenger side | 550 mm |
| Pieces per pack | 2 |
| Adapter / connection | MBTL1.1 |
| Integrated spoiler | Yes |

**Technology:** [Aerotwin flat blade](https://car-parts-universe.superfast.shop/en/technology/aerotwin-flat-blade.md), [Power Protection Plus rubber](https://car-parts-universe.superfast.shop/en/technology/power-protection-plus-rubber.md)

## Documents

- [Aerotwin product information (multilingual)](https://emea.resource.bosch.com/AA/internet/enfinity/img/products/33970149810000CO0000.pdf)

## Pack size

Branches deliver the same day; the central warehouse the next day.

| Pack size | SKU | EAN | EUR Net (excl. VAT) | Central warehouse | Oslo Alnabru | Bergen Kokstad | Trondheim Tiller | Stockholm Västberga | Gothenburg Hisings Backa | Rotterdam Waalhaven |
|---|---|---|---|---|---|---|---|---|---|---|
| Set of 2 | BOS-3397009843 |  | €24.00 | 30 | 19 | 15 | 9 | 0 | 28 | 11 |

## Prices

Net prices exclude VAT; incl. VAT uses the market rate.

| Pack size | SKU | EUR Net (excl. VAT) | EUR Incl. VAT 21 % | NOK Net (excl. VAT) | NOK Incl. VAT 25 % | SEK Net (excl. VAT) | SEK Incl. VAT 25 % |
|---|---|---|---|---|---|---|---|
| Set of 2 | BOS-3397009843 | €24.00 | €29.04 | NOK 281.00 | NOK 351.25 | SEK 269.00 | SEK 336.25 |

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Web page: https://car-parts-universe.superfast.shop/en/wipers-and-lighting/bosch-aerotwin-wiper-blade-set-a-843-s
Markdown version of this page, for language models. Prices are net (excl. VAT) unless marked incl. VAT.