# Bilstein 40-303437 B3 OE Replacement Rear Passenger Side Air Suspension Spring for 2011-2017 Mercedes-Benz Cls400 and More

### Performance Overview

Bilstein B3 Series Coil Springs are the ideal OE replacement for your vehicle's springs, providing Bilstein's proven quality and durability. The B3 Springs offer a perfect match to your specific vehicle's shock absorbers, while protecting them from the elements with a corrosion-resistant finish. Choose Bilstein's uncompromising quality and direct-fit and order your B3 Series Coil Over Springs today!

### Key Features

-   Bilstein B3 Series Coil Springs are the ideal OE replacement for your vehicle's springs, providing Bilstein's proven quality and durability.
-   The B3 Springs offer a perfect match to your specific vehicle's shock absorbers, while protecting them from the elements with a corrosion-resistant finish.
-   Choose Bilstein's uncompromising quality and direct-fit and order your B3 Series Coil Over Springs today!

### Vehicle Fitment

-   2015 Mercedes-Benz Cls400 (Position: Passenger Side; Note: Base; With Rear Air Springs)
-   2016 Mercedes-Benz Cls400 (Position: Passenger Side; Note: Base; With Rear Air Springs)
-   2012 Mercedes-Benz Cls550 (Position: Passenger Side; Note: 4Matic, Base)
-   2013 Mercedes-Benz Cls550 (Position: Passenger Side; Note: 4Matic, Base)
-   2014 Mercedes-Benz Cls550 (Position: Passenger Side; Note: 4Matic, Base)
-   2015 Mercedes-Benz Cls550 (Position: Passenger Side; Note: 4Matic, Base; With Rear Air Springs)
-   2016 Mercedes-Benz Cls550 (Position: Passenger Side; Note: 4Matic, Base; With Rear Air Springs)
-   2017 Mercedes-Benz Cls550 (Position: Passenger Side; Note: 4Matic, Base; With Rear Air Springs)

### FAQ

**Will this fit my vehicle?**  
Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase.

**What part number is this?**  
The listed part number is 40-303437.

**Is this product designed for direct replacement?**  
Yes. This product is intended to match compatible vehicle applications listed in the fitment section.

**Should I confirm fitment before ordering?**  
Yes. Always compare your original part, position, and vehicle details with the fitment chart before ordering.

### Common Searches

-   B3 OE Replacement Rear Passenger Side Air Suspension Spring for Mercedes-Benz Cls400
-   40-303437 fitment
-   Bilstein B3 OE Replacement Rear Passenger Side Air Suspension Spring
-   Passenger Side B3 OE Replacement Rear Passenger Side Air Suspension Spring
-   2015 Mercedes-Benz Cls400 B3 OE Replacement Rear Passenger Side Air Suspension Spring

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2015

Mercedes-Benz

Cls400

Passenger Side

Base; With Rear Air Springs

2016

Mercedes-Benz

Cls400

Passenger Side

Base; With Rear Air Springs

2012

Mercedes-Benz

Cls550

Passenger Side

4Matic, Base

2013

Mercedes-Benz

Cls550

Passenger Side

4Matic, Base

2014

Mercedes-Benz

Cls550

Passenger Side

4Matic, Base

2015

Mercedes-Benz

Cls550

Passenger Side

4Matic, Base; With Rear Air Springs

2016

Mercedes-Benz

Cls550

Passenger Side

4Matic, Base; With Rear Air Springs

2017

Mercedes-Benz

Cls550

Passenger Side

4Matic, Base; With Rear Air Springs

2011

Mercedes-Benz

E-350

Passenger Side

4Matic; Station Wagon

2012

Mercedes-Benz

E-350

Passenger Side

4Matic; Station Wagon

2013

Mercedes-Benz

E-350

Passenger Side

4Matic; Station Wagon

2014

Mercedes-Benz

E-350

Passenger Side

4Matic; Station Wagon

2015

Mercedes-Benz

E-350

Passenger Side

4Matic; Station Wagon

2016

Mercedes-Benz

E-350

Passenger Side

4Matic; Station Wagon

2015

Mercedes-Benz

E400

Passenger Side

4Matic; Station Wagon

2016

Mercedes-Benz

E400

Passenger Side

4Matic; Station Wagon

## Details

- **Price:** 794.14 CAD
- **Vendor:** Bilstein
- **Type:** B3 OE Replacement Rear Passenger Side Air Suspension Spring
- **Tags:** 2011 Mercedes-Benz E-350, 2012 Mercedes-Benz Cls550, 2012 Mercedes-Benz E-350, 2013 Mercedes-Benz Cls550, 2013 Mercedes-Benz E-350, 2014 Mercedes-Benz Cls550, 2014 Mercedes-Benz E-350, 2015 Mercedes-Benz Cls400, 2015 Mercedes-Benz Cls550, 2015 Mercedes-Benz E-350, 2015 Mercedes-Benz E400, 2016 Mercedes-Benz Cls400, 2016 Mercedes-Benz Cls550, 2016 Mercedes-Benz E-350, 2016 Mercedes-Benz E400, 2017 Mercedes-Benz Cls550, 40-303437, Automotive Parts, B3 OE Replacement Rear Passenger Side Air Suspension Spring, Bilstein, Bilstein Suspension, Direct Replacement, Passenger Side, Performance Suspension, Suspension

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 794.14 CAD | In stock |

## Images

- Bilstein 40-303437 B3 OE Replacement Rear Passenger Side Air Suspension Spring for 2011-2017 Mercedes-Benz Cls400 and More

---

> Source: [Standard Auto Part](www.standardautopart.com/products/bilstein-mercedes-benz-cls400-b3-oe-replacement-40-303437)
> Updated: 2026-06-15