BenzUnited Parts
Mid-length Headers for Mercedes E550 CLK550 CLS550 SL550 M273 V8 NA
Mid-length Headers for Mercedes E550 CLK550 CLS550 SL550 M273 V8 NA
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Transform your Mercedes-Benz M273 V8 with our high-flow mid-length performance headers. Engineered to cut backpressure and maximise airflow, they free up horsepower and torque and give a deeper, more aggressive exhaust note. Fits the naturally aspirated M273 V8 in the E550, CLS550, SL550, CLK550, S550 and CL550.
Performance Benefits
- High-flow design: reduced exhaust restriction.
- Enhanced exhaust tone: deeper, throatier sound under throttle.
- Optimised piping: wide diameter balancing top-end power and torque.
- Global fitment: works with both LHD and RHD models.
- 3-inch outlet pipe: large outlet for maximum flow and easy exhaust connection.
Fitment Compatibility
| Model | Engine | Years |
|---|---|---|
| SL550 (R230) | M273 5.5L V8 | 2007–2012 |
| CLS550 (C219) | M273 5.5L V8 | 2007–2011 |
| CLK550 (W209) | M273 5.5L V8 | 2007–2009 |
| E550 (W211 / W212) | M273 5.5L V8 | 2007–2011 |
| S550 (W221) | M273 5.5L V8 | 2007–2011 |
| CL550 (C216) | M273 5.5L V8 | 2007–2010 |
Choose Your Option
Use the option selector above:
- Headers only: the mid-length headers with mid-pipes, ready to install.
- Headers + OEM gaskets & studs (+$180): we include fresh OEM exhaust gaskets and studs so you’re not chasing down hardware mid-install. If you’re doing this job once and doing it right, add the gasket set — reusing old gaskets on a header swap is a common source of leaks.
Complete the Build
Headers are the single biggest breathing upgrade on the naturally aspirated M273 — but the factory ECU doesn’t know they’re there. A custom M273 tune adjusts timing and fuelling to the improved exhaust flow, recovering the rest of the power the headers make possible and sharpening throttle response.
See more M273 Performance Upgrades →
Why Buy from BenzUnited
- Trusted by performance tuners and Mercedes enthusiasts.
- Fast shipping, responsive support and fitment help.
- Rare and high-performance Mercedes parts sourced with precision.
Buy With Confidence
- Free U.S. shipping with tracking on all orders.
- Mercedes specialists: we focus exclusively on Mercedes platforms — you’re working with people who know the M273 inside out.
- Real support: questions before or after purchase go straight to us, not a call center.
Confirm fitment or ask a question →
Off road use only. Not legal for use on emissions-controlled vehicles or public roads.
Professional installation with welding is required. Ships within 1–2 business days, packaged securely.
