Ignition Coil & Iridium Spark Plugs for Mercedes-Benz C350 E350 ML350 R350 (2006-2013) 3.5L V6

High-Performance Ignition Coil & Iridium Spark Plugs for 2006-2013 Mercedes Benz C-Class, E-Class, M-Class

What it Does: This direct-replacement ignition coil and iridium spark plug kit restores combustion efficiency and resolves stubborn misfires on the 3.5L V6 Mercedes-Benz engine platforms.

The Stock M272 / M276 Thermal Degradation Problem

The OEM ignition coils on the Mercedes-Benz M272 and early M276 engines are notorious for premature thermal degradation. Mounted tightly against the cylinder heads, these coils suffer from chronic heat soak, which causes the internal epoxy to crack over time and resistance values to spike. This breakdown leads to weak spark delivery, sluggish throttle response, rough idling, and inevitable P0300-series misfire trouble codes. Additionally, factory spark plugs lose their gap tolerance through long-term electro-erosion, significantly lowering combustion efficiency and placing destructive strain on the primary windings of the already failing coils.

The Engineering Solution

This comprehensive ignition kit features heavy-duty replacement coils engineered with premium internal copper windings to ensure maximum voltage transfer and superior heat dissipation. By upgrading the internal material composition, these coils withstand the extreme thermal cycling characteristic of the 3.5L V6 architecture, preventing epoxy cracking and extending operational lifespan well beyond OE specifications. Coupled with high-efficiency iridium spark plugs—which offer a 15% increase in energy transfer over standard plugs—this system provides a highly concentrated, reliable spark. The ultra-fine iridium center electrode ensures precise ignition timing, complete fuel burn, and stabilized idle, eliminating acceleration hesitation and restoring factory power output.

Technical Specifications

Compatibility

• 2006-2013 Mercedes-Benz C350 (3.5L V6)
• 2006-2013 Mercedes-Benz E350 (3.5L V6)
• 2006-2013 Mercedes-Benz ML350 (3.5L V6)
• 2006-2013 Mercedes-Benz R350 (3.5L V6)

The Mercedes Benz Precision Caliber

European luxury demands exacting electrical precision. This ignition system provides the OE+ durability and flawless voltage delivery required to eliminate check engine lights, smooth out idle variations, and deliver the refined, responsive driving experience expected from a Mercedes-Benz.