Mechanics know that silent blocks are essential for a smooth, comfortable ride. These components ensure the vehicle’s wheels are perfectly aligned, they absorb vibrations, impacts and noises and allow track control arm movements. But some OE-designed hydraulic silent blocks are more prone to wear and early failure due to structural weaknesses: thin rubber causes cracks.
At Sidem, we care about the vehicle’s performance and lifespan. We test OE parts, listen to feedback from workshops and develop solutions that deliver durability, comfort and safety. That’s why we’ve engineered a full rubber alternative for some hydraulic silent blocks, ensuring superior durability without compromising ride quality.
Some hydraulic silent blocks in modern vehicles have shown a high failure rate, especially in electric and larger vehicles. Due to their heavier weight, these vehicles generate larger forces, increasing stress on the silent blocks.
The root cause? The rubber around the hydraulic chamber in these silent blocks is thinner than standard silent blocks, making it the weakest point. Over time, this results in early ruptures, leading to noise, discomfort, and costly replacements.
To address this issue, our Quality and R&D department developed a full rubber alternative. By eliminating the hydraulic core and optimizing rubber shore hardness, we have achieved perfect balance between axial and radial stiffness.
The result?
With these improvements, the vehicles stay reliable and safe on the road while reducing workshop visits.
In the table an overview of all new items can be found.
| MODEL | SIDEM REFERENCE |
| Mercedes EQA (H243) 02/2021 – present
Mercedes EQB (X243) 10/2021 – present Mercedes GLA (H247) 02/2020 – present Mercedes GLB (X247) 08/2019 – present |
Full rubber silent blocks
8496000 R (Left) 8496001 R (Right) |
| Renault Espace V (JR_) 02/2015 – 03/2023
Renault Scenic IV (JFA) 09/2016 – 07/2022 Renault Grand Scenic IV 09/2016 – 03/2023 Renault Megane IV (B9A/M_) 11/2015 – present Renault Megane IV Grandtour (K9A/M_) 04/2016 – present Renault Megane IV Saloon 10/2016 – present Renault Talisman (_FD) 06/2015 – present |
Full rubber silent blocks
805650 R * |
| Audi A4 (8K2-B8) 08/2007 – 09/2016
Audi A4 (8W2, 8WC – B9) 05/2015 – present Audi A4 Allroad (8KH-B8) 04/2009 – 05/2016 Audi A4 Allroad (8WH-8WJ-B9) 01/2016 – present Audi A4 Avant (8K5-B8) 11/2007 – 12/2015 Audi A4 Avant (8W5-8WD-B9) 08/2015 – present Audi A4 Quattro (B8) 01/2008 – 12/2015 Audi A4 Quattro (B9) 05/2015 – present Audi A5 Cabrio (8F7) 03/2009 – 01/2017 Audi A5 Cabrio (F57, F5E) 11/2016 – present Audi A5 Coupe (8T3) 06/2007 – 01/2017 Audi A5 Coupe (F53, F5P) 06/2016 – present Audi Q5 (8RB) 11/2008 – 05/2017 Porsche Macan (95B) 02/2014 – present |
Full rubber silent blocks |
| Mercedes EQA (H243) 02/2021 – present
Mercedes EQB (X243) 10/2021 – present Mercedes GLA (H247) 02/2020 – present Mercedes GLB (X247) 08/2019 – present |
Track control arms with full rubber silent blocks
490078 R (Left) 490079 R (Right) |
| Renault Megane IV (B9A/M_) 11/2015 – present
Renault Megane IV Grandtour (K9A/M_) 04/2016 – present Renault Megane IV Saloon 10/2016 – present |
Track control arms with full rubber silent blocks
5472 R (Left) * 5473 R (Right) |
| Renault Scenic IV (JFA) 09/2016 – 07/2022
Renault Grand Scenic IV 09/2016 – 03/2023 Renault Megane IV (B9A/M_) 11/2015 – present Renault Megane IV Grandtour (K9A/M_) 04/2016 – present Renault Megane IV Saloon 10/2016 – present |
Track control arms with full rubber silent blocks
5474 R (Left) 5475 R (Right) * |
| Renault Espace V (JR_) 02/2015 – 03/2023
Renault Talisman (_FD) 06/2015 – present |
Track control arms with full rubber silent blocks
5476 R (Left) * 5477 R (Right) * |
* = available in April 2025
Article references are now immediately available from stock for: Hyundai Tucson & Kia Sportage with Aluminum wheel bearing housing.
Article references are now immediately available from stock for: Fiat 500e.
Article references are now immediately available from stock for: Nissan e-NV200.
