Shock absorber Mercedes A-Class W177 rear (2018–2025) — Sachs, Monroe, KYB, Bilstein
Rear shock absorber for Mercedes A-Class W177 (2018–2025) — Sachs, Monroe, KYB, Bilstein and Koni part numbers with technical dimensions.
Technical Specifications
| Parameter | Value |
|---|---|
| Make / Model | Mercedes A-Class W177 |
| Axle | Rear |
| Production Years | 2018–2025 |
| Extended length | 445 mm |
| Compressed length | 300 mm |
| Stroke | 145 mm |
Compatible Shock Absorbers
| Brand | Part Number | Grade |
|---|---|---|
| Sachs (ZF) | Sachs 313 020 | OE level |
| Monroe | Monroe 742158 | OE level |
| KYB | KYB 341908 | OE level |
| Bilstein | Bilstein 33-275044 | Sport / Premium |
| Koni | Koni 82-2998 | Sport / Adjustable |
Replacement Interval
Replacement is recommended every 80,000–100,000 km or when symptoms appear.
Always replace shock absorbers in pairs on the same axle — uneven wear causes the vehicle to pull to one side under braking.
Signs of Worn Shock Absorbers
- Body nose-dives under braking, bounces on bumps
- Knocking, squeaking or vague feeling through corners
- Increased stopping distance by 10–15%
- Uneven tyre wear (flat spots, cupping)
- Oil leaks visible on the shock absorber body
FAQ
Which shock absorbers should I choose for Mercedes A-Class W177?
For standard use: Sachs Sachs 313 020 or Monroe Monroe 742158 — OE-level quality at a fair price. For improved handling: Bilstein Bilstein 33-275044.
Should shock absorbers always be replaced in pairs?
Yes — always replace both shock absorbers on the same axle. A difference in condition between left and right causes instability under braking and in corners.
Do I need to replace the springs when fitting new shock absorbers on Mercedes A-Class W177?
Springs are replaced separately, only when visibly damaged (cracks, sagging, breakage). They are not replaced as routine preventive maintenance.
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