Belt Wrap Kit for AMG Mercedes E55 CLS55 CL55 S55 G55 SL55 (2003-2011) M113K

Supercharger Belt Wrap Kit for Mercedes-AMG M113K (2003–2011)

Maintain consistent boost and protect your supercharger drive system with this Ultimate Performance Belt Wrap Kit, engineered specifically for Mercedes-AMG vehicles equipped with the M113K supercharged V8. Designed to eliminate belt slip under high boost conditions, this kit ensures reliable power delivery across the entire RPM range.

Factory M113K setups are known to suffer from belt slip and weak double-idler assemblies when subjected to increased boost or aggressive driving. This belt wrap kit corrects those shortcomings by increasing belt contact on both the crank and supercharger pulleys while reinforcing the factory idler system for long-term durability.

Vehicle Fitment

• Mercedes-Benz E55 AMG (2003–2006)
• Mercedes-Benz CLS55 AMG (2005–2006)
• Mercedes-Benz CL55 AMG (2003–2006)
• Mercedes-Benz S55 AMG (2003–2006)
• Mercedes-Benz SL55 AMG (2003–2008)
• Mercedes-Benz G55 AMG (2005–2011; 2004 Non-US M113K)

Key Performance Benefits

• Prevents belt slip under boost to maintain maximum supercharger output
• Consistent boost pressure under full throttle
• Increases power evenly across the entire power band
• Improves tuning consistency for modified applications
• Increases belt wrap on both crank and supercharger pulleys
• Reinforces weak factory double idlers known to fail under load

Design & Durability

• High-strength idler pulley and mounting brackets
• Optimized geometry for maximum belt contact
• Reduced belt wear and extended idler life
• Built to withstand high-boost and aggressive driving conditions

What’s Included

• Belt wrap idler pulley
• Mounting brackets
• All required hardware
• New supercharger belt
• Installation instructions

Important Fitment Notice

Note on Pulley Sizes: Belt length is matched to your crank pulley and supercharger pulley configuration. Stock-sized pulleys use the standard included supercharger belt, while aftermarket pulley sizes require a corresponding belt length.

Why Upgrade Your Belt Drive System?

• Eliminate power loss caused by belt slip
• Maintain stable boost at high RPM
• Protect against premature idler and belt failure
• Support higher boost and performance modifications

This belt wrap kit is an essential upgrade for both stock and modified AMG M113K platforms, delivering reliable boost control, improved durability, and confidence under full throttle.

Lock in your boost, protect your supercharger system, and unleash the full potential of your AMG V8.

Common Questions

Which Mercedes-AMG models does this belt wrap kit fit?
This kit fits supercharged M113K V8 models including the E55 AMG (2003–2006), CLS55 AMG (2005–2006), CL55 AMG (2003–2006), S55 AMG (2003–2006), SL55 AMG (2003–2008), and supercharged G55 AMG (2005–2011 US / 2004–2011 Non-US).

Will this fit a 2003 or 2004 US-spec G55 AMG?
It is engineered specifically for the supercharged M113K V8 engine. North American G55 AMG models received the supercharged M113K starting in the 2005 model year, whereas earlier US models were equipped with the naturally aspirated M113.

What is included in the box?
The kit includes a high-strength belt wrap idler pulley, mounting brackets, all required installation hardware, a new supercharger belt, and installation instructions.

Does this kit work on both stock and modified M113K engines?
Yes, it is built for both stock and modified M113K platforms to increase belt contact on the crank and supercharger pulleys and eliminate belt slip under boost.

Why does this kit reinforce the factory idler system?
Factory M113K double-idler assemblies are prone to belt slip and failure under high load. This kit adds a high-strength idler pulley and mounting brackets with optimized geometry to reduce belt wear and extend component life.