BenzUnited Parts
AMG M157 5.5L BiTurbo Intake Spacer Kit – E63, CLS63, S63, CL63, SL63
AMG M157 5.5L BiTurbo Intake Spacer Kit – E63, CLS63, S63, CL63, SL63
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Let your 5.5L AMG V8 breathe the way it should. This CNC-machined Intake Filter Spacer Kit for the M157 (5.5L BiTurbo AMG) removes a known restriction inside the factory airbox—improving airflow efficiency, sharpening throttle response, and increasing midrange punch without changing the look of your engine bay.
🔥 Key Features for M157 AMG Platforms
- Optimized airflow at the filter seal: Spacer geometry reduces the choke point at the airbox lid, increasing effective inlet area and smoothing turbulence.
- Works with OEM & performance filters: Fully compatible with factory paper elements and all high-flow performance filters.
- OEM engine cover friendly: Retains factory fitment and maintains a stock-clean appearance—ideal for sleeper builds.
- CNC-machined aluminum construction: Strong, heat-stable, corrosion-resistant, and precision-fit for all M157 airboxes.
- Optional Cerakote finish: Stealth black or custom colorways with engraving available.
📈 Real-World Performance Benefits
- Faster turbo response: Reduced restriction lets the twin turbos spool sooner and with less effort.
- Smoother, more immediate throttle feel: Consistent airflow improves drivability in both Comfort and Sport modes.
- More headroom for tuned cars: Eliminates an upper-airbox bottleneck that becomes a limiting factor on tuned M157 setups.
- Perfect stealth mod: Completely hidden inside the airbox—no visible modifications even during inspections.
No tune required — fully compatible with stock ECU mapping.
🔬 Why the Spacer Works
The M157 airbox creates a pressure drop where the filter seals against the lid. At higher airflow levels—especially on tuned or aggressively driven cars—this becomes a significant restriction. Raising the filter into the optimal flow path increases effective inlet area, reduces turbulence, and improves compressor efficiency. The result: smoother airflow, quicker response, and more consistent performance under load.
✔️ Compatibility – M157 5.5L BiTurbo AMG
Fits all Mercedes-Benz models equipped with the M157 5.5L BiTurbo V8 engine:
| Model | Trim | Years |
|---|---|---|
| S-Class (W221) | S 63 AMG | 2011–2013 |
| S-Class (W222) | S 63 AMG | 2013–2017 |
| CL-Class | CL 63 AMG | 2011–2014 |
| CLS-Class | CLS 63 / CLS 63 S AMG | 2012–2018 |
| ML-Class | ML 63 AMG | 2012–2015 |
| GLE-Class | GLE 63 / GLE 63 S AMG | 2015–2019 |
| GL-Class | GL 63 AMG | 2012–2016 |
| GLS-Class | GLS 63 AMG | 2016–2019 |
| G-Class | G 63 AMG | 2013–2018 |
| E-Class | E 63 / E 63 S AMG | 2012–2016 |
| SL-Class | SL 63 AMG | 2012–2019 |
🧰 Installation & Notes
- Bolt-on, fully reversible: Installs at the filter/airbox interface with no cutting or modification.
- OEM-style sealing: Maintains a proper gasket seal around the filter perimeter.
- DIY-friendly: Basic tools and 10–15 minutes per side.
📦 What’s Included
- (2) CNC-machined aluminum intake spacers (left + right)
- Digital installation guide
🏁 Why Trust BenzUnited Performance Parts?
For over 12 years, we’ve been testing, tuning, and daily-driving high-performance Mercedes-Benz and AMG platforms. Every part we design is based on real-world testing—not theory, not hype.
- We build parts for the platforms we own: W212/W213 E-Class, W218 CLS, W222 S-Class, R231 SL, W166/W292 SUVs, and more.
- No gimmicks: If a part doesn’t make a measurable improvement on our own AMGs, we don’t sell it.
- Maximum value, maximum gains: We target hidden airflow and heat bottlenecks that deliver real acceleration and response gains.
- OEM-plus philosophy: Clean installs, no reliability tradeoffs, no tuning hacks—just real performance.
When you buy from BenzUnited, you’re getting parts engineered, tested, and validated in-house by enthusiasts who know these cars inside and out.
