BenzUnited Parts
M274 Catless Downpipe for Mercedes C300 / E300 / GLC300 (W205 / W213 / X253) 2015–2021
M274 Catless Downpipe for Mercedes C300 / E300 / GLC300 (W205 / W213 / X253) 2015–2021
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One of the easiest and most effective ways to make real power on the common M274 platform.
The factory catalytic converter on the M274 2.0L turbo is a major restriction right after the turbo. This high-flow catless downpipe removes that bottleneck for noticeably quicker spool, sharper throttle response, stronger mid-range torque, and a more aggressive turbo sound — all while remaining daily-drivable.
Perfect for the C300 owner who wants big gains without complexity. Most customers see excellent results when paired with a JB4, ECU reflash, diverter valve, and high-flow filter.
🎧 Real Sound & Spool
Why C300 Owners Love This Downpipe
- Quicker turbo spool & sharper throttle — huge improvement in response
- Stronger mid-range torque — makes the C300 feel much quicker in everyday driving
- Aggressive turbo sound — noticeable whoosh, spool, and pops & bangs with tuning
- One of the easiest power mods on the M274 platform
Pair this downpipe with our JB4 tuner, ECU reflash, diverter valve, and high-flow filter for the easiest and most effective power upgrade on the M274 engine.
Shop JB4 Tuner + Supporting Mods →⚙️ Compatibility
| Model | Chassis | Years |
|---|---|---|
| C300 | W205 / C205 / A205 | 2015–2021 |
| E300 | W213 | 2017–2020 |
| GLC300 | X253 | 2016–2019 |
FWD & 4Matic models supported. Professional installation recommended.
Important Use Notice
This product is intended for off-road or competition use only. It may trigger a check engine light without proper tuning.
Ships from USA • Secure checkout • Fitment guaranteed
