Ignition Coil + Spark Plugs for Mercedes Benz E-Class (2007-2011) 5.5L

Direct-Fit Ignition Coil and Spark Plug Refresh Kit for 2007-2011 Mercedes Benz E-Class 5.5L (W211/W212 M273)

What it Does: The ignition coil and spark plug service kit restores factory combustion efficiency and stabilizes secondary ignition voltage on the 2007-2011 Mercedes-Benz E-Class 5.5L to eliminate misfires and restore smooth throttle response.

The Stock Mercedes Benz E-Class Thermal Breakdown

The factory ignition coils on the M273 naturally aspirated 5.5L V8 are prone to continuous thermal fatigue caused by tight engine bay clearances and high underhood heat soak across the cylinder heads. Over time, the factory epoxy insulation breaks down, causing secondary voltage leakage, internal winding resistance, and coil housing micro-cracks. Compounding this, worn spark plugs exhibit expanded ground electrode gaps that force coils to discharge at higher operating voltages, triggering unburned fuel delivery, rough idle, catalytic converter damage, and diagnostic trouble codes from P0300 to P0308.

The Engineering Solution

This 8-cylinder ignition overhaul kit pairs high-dielectric coil packs with matched platinum-core spark plugs to maintain stable arc discharge under heavy load. The ignition coils feature premium copper primary and secondary windings encased in vacuum-poured epoxy to resist heat degradation and voltage arcing. Paired with NGK G-Power LKR7BGP platinum-tipped spark plugs, this kit provides a reduced strike voltage threshold, precise gap retention, and uniform flame kernel development for optimal combustion dynamics across both the W211 and W212 chassis platforms.

Technical Specifications

Compatibility

• 2007-2009 Mercedes Benz E-Class E550 Sedan / 4Matic (W211) 5.5L V8 M273
• 2010-2011 Mercedes Benz E-Class E550 Sedan / Coupe / Cabriolet (W212/C207/A207) 5.5L V8 M273

Frequently Asked Questions

Does this fit the W211 and W212 E-Class?
Yes, this is a direct fit for the 2007-2011 Mercedes Benz E-Class equipped with the 5.5L M273 engine.

Do these spark plugs require pre-gapping before installation?
The included NGK LKR7BGP plugs are pre-gapped from the factory, though confirming factory gap spec (0.031 in / 0.8 mm) prior to torquing is standard practice.

The Mercedes Benz Precision Standard

Engineered to satisfy stringent European combustion tolerances, this matched coil and plug set preserves proper CAN bus secondary ignition feedback to ensure flawless operation without check engine lights or adaptation fault codes.