By now, many have heard of the issue of accelerated wear in the valvetrain of the M156 engine. The materials design of the valvetrain components results in repeated contact of soft metals with hard metals. Eventually, this can result in premature wear of the valvetrain, degrading engine performance, or even causing engine failure.

Many M156 valve buckets are prone to "bleed down", resulting in excessive valve lash during cold start-up, commonly heard as a loud tapping noise until the engine fully reaches operating temperature. Excessive valve lash is a major contributor to accelerated valvetrain wear. The M159 engine, used in the SLS and SLS roadster, features valve buckets that are of an improved design. The M159 valve buckets feature an anti-friction coating to reduce wear on the camshaft lobes. They also have an improved hydraulic system that will not "bleed down" like the M156 valve buckets. Installation of M159 valve buckets will help prevent any premature wear to your engine's valvetrain and make for a quieter engine on cold starts.

• Anti-Friction Coating
• Improved Hydraulic System
• Direct Replacement for M156 Valve Buckets

• Mercedes-Benz R197 SLS AMG Roadster M159 6.2L V8 (2011-2015)
• Mercedes-Benz R197 SLS AMG GT Roadster M159 6.2L V8 (2012-2015)
• Mercedes-Benz R197 SLS AMG GT Coupe M159 6.2L V8 (2012-2015)
• Mercedes-Benz R197 SLS AMG Coupe M159 6.2L V8 (2010-2015)
• Mercedes-Benz R197 SLS AMG Black Series M159 6.2L V8 (2013-2015)
• Mercedes-Benz R230 SL63 AMG Roadster M156 6.2L V8 (2007-2011)
• Mercedes-Benz W164 ML63 AMG Base M156 6.2L V8 (2007-2011)
• Mercedes-Benz C219 CLS63 AMG Coupe M156 6.2L V8 (2007-2010)
• Mercedes-Benz C216 CL63 AMG Coupe M156 6.2L V8 (2006-2010)
• Mercedes-Benz A209 CLK63 AMG Cabriolet M156 6.2L V8 (2006-2009)
• Mercedes-Benz C209 CLK63 AMG Coupe M156 6.2L V8 (2006-2009)
• Mercedes-Benz C209 CLK63 AMG Black Series M156 6.2L V8 (2007-2009)
• Mercedes-Benz W221 S63 AMG Base M156 6.2L V8 (2007-2010)
• Mercedes-Benz W212 E63 AMG Base M156 6.2L V8 (2007-2011)
• Mercedes-Benz W204 C63 AMG Base M156 6.2L V8 (2007-2014)
• Mercedes-Benz C204 C63 AMG Black Series M156 6.2L V8 (2011-2014)
• Mercedes-Benz S204 C63 AMG T-Modell M156 6.2L V8 (2007-2014)
• Mercedes-Benz C204 C63 AMG Coupe M156 6.2L V8 (2011-2014)

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