BenzUnited Parts
M276 Heat-Shielded Catless Downpipes for C43 / E43 / E400 / E450
M276 Heat-Shielded Catless Downpipes for C43 / E43 / E400 / E450
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⚠️ Off-road / race use only • Not street legal • Not emissions compliant • Tuning highly recommended to prevent CEL
Cooler Engine Bay.
Faster Turbo Spool.
Built-in Heat Protection.
What You’ll Actually Feel
- • Integrated thermal shielding — retains heat in the exhaust stream for quicker turbo spool
- • Cooler engine bay — dramatically reduces radiant heat soak to surrounding components
- • Catless high-flow design — sharper throttle response + deeper AMG exhaust tone
- • Direct bolt-on fitment — zero fabrication, perfect OEM flange match
- • Factory downstream catalysts retained — emissions components stay in place
- • Premium 304 stainless steel • TIG-welded — built to last
Installation: 100% bolt-on. Average install time ~3 hours. Professional installation recommended.
📈 Performance Gains + M276 ECU Calibration
Downpipes Only: +15–20 HP / +20–30 lb-ft
Stage 2 + ECU Tune: 485 HP / 530 lb-ft
- ✓ Optimized boost & torque targets
- ✓ Sharper throttle mapping
- ✓ Adjustable exhaust burbles & crackles
- ✓ Eliminates check engine lights from catless downpipes
- ✓ Retains OEM safety & drivability
Tuning is highly recommended for maximum performance and to prevent fault codes.
⚙️ Full Vehicle Compatibility
| Model | Years | Body Style | Chassis |
|---|---|---|---|
| C400 | 2015 | Sedan | W205 |
| C450 AMG | 2016 | Sedan | W205 |
| C43 AMG | 2017–2023 | Sedan Coupe Cabriolet |
W205 C205 A205 |
| E400 | 2016–2017 | Sedan Coupe Cabriolet |
W213 C238 A238 |
| E450 | 2017–2020 | Sedan Coupe Cabriolet |
W213 C238 A238 |
| E43 AMG | 2017–2020 | Sedan | W213 |
If your model is listed, these bolt on with zero fabrication required.
❓ Frequently Asked Questions
Will this trigger a CEL?
Yes — without ECU calibration. Tuning is highly recommended.
Is tuning required?
Highly recommended for optimal performance, drivability, and fault code elimination.
Is this street legal?
No. These are off-road and track-use components only.
Is there a warranty?
Yes — full 12-month structural warranty with guaranteed fitment on listed M276 models.
