• Heat-shielded catless downpipes for Mercedes M276 – front view, Benz United Parts
  • M276 downpipes for Mercedes C43 E43 with heat shielding – rear outlet angle
  • Heat-shielded stainless downpipes with O2 bungs – angled layout for M276 AMG
  • Benz United Parts logo badge – heat shielded downpipe
  • mercedes-c43-amg-heat-shielded-downpipes-rear-view
  • Mercedes M276 catless downpipes – in-box view with packaging and hardware
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BenzUnited Parts

M276 Catless Downpipes for Mercedes C43 AMG C450 C400 Heat Shielded

M276 Catless Downpipes for Mercedes C43 AMG C450 C400 Heat Shielded

$649.00 USD
$800.00 USD $649.00 USD
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🚨 LAST SET AVAILABLE – In stock and ready to ship!

Heat Shielded Catless Downpipes – C43 AMG / C450 / C400 / E43 / E450 / E400 (M276)


Upgrade your AMG with these heat-shielded catless downpipes for the Mercedes-Benz M276 3.0L BiTurbo engine. Engineered for performance, these downpipes don’t just free up flow — the integrated thermal shielding keeps exhaust energy where it belongs: inside the pipe. The result is quicker turbo spool, lower under-hood temps, and a system that delivers power consistently without heat soak.

🔥 Key Benefits

  • ✅ Integrated thermal shielding – Retains exhaust heat inside the piping, which improves gas velocity and turbo spool while reducing radiant heat in the engine bay
  • ✅ Lower engine bay temps – Up to 50% cooler surrounding temps, protecting hoses, wiring, and intake components from heat soak
  • ✅ Catless design – Maximizes exhaust flow and unlocks the raw, aggressive twin-turbo AMG sound
  • ✅ Faster turbo spool – Hotter gases mean faster-moving exhaust flow, giving sharper throttle response and stronger mid-range torque
  • ✅ Consistent performance – Less heat bleed = more stable intake temps and less power loss during hard driving
  • ✅ Direct bolt-on fitment – Installs to OEM turbo outlets with no fabrication required
  • ⚠️ Will trigger a CEL without tuning – ECU tune highly recommended

🔧 Vehicle Compatibility

  • 2017–2023 Mercedes-AMG C43 (W205)
  • 2017–2023 Mercedes-AMG E43 (W213)
  • 2017–2023 Mercedes-Benz E400 / E450 (W213)
  • 2015–2016 Mercedes-Benz C400 / C450 (W205)

📈 Estimated Performance Gains

Setup HP Gain Torque Gain Notes
Downpipes Only +10–20 HP +20–30 lb-ft Sharper response, aggressive sound
With ECU Tune +60–70 HP +80–100 lb-ft Full potential unlocked on 93+ octane

🛠️ Install Notes

  • 100% bolt-on – fits OEM turbo flange and mid-pipe
  • Built-in heat shielding – no need for external wrap or coatings
  • Recommend lift or jack stands for ease of access
  • Average install time: 1.5–2.5 hours
  • ECU tuning required to avoid CEL and maximize performance

💻 Optional ECU Tune – Bundle Pricing Available

Pair these downpipes with our in-house custom ECU tune and unlock the full performance potential. You’ll get:

  • Three optimized maps (91, 93, or 100 octane)
  • Customizable burble, throttle response, and RPM limits
  • Optional handheld programmer for easy flash at home

Tune MSRP: $2000 — Bundle Price: $1250 with downpipes.

🧾 Cosmetic Disclaimer

One unit has a small surface scratch on the Benz United Parts badge (see close-up image). This is purely cosmetic and does not affect performance, fitment, or durability in any way. We disclose everything up front so you know exactly what you're getting.

📦 Shipping & Availability

✅ In stock now – Ships within 1 business day from California. All parts are quality-checked in-house.

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