Premium OE Replacement Spark Plug for Mercedes W221 W212 S212 C207 S211

Exact OE fitment (0041592503 / A0041592503 / Z6SII3320) with factory-specified electrode gap and torque settings for seamless integration.

Iridium-enhanced center electrode delivers 60k-mile durability, 20% better ignition efficiency than standard plugs for optimized fuel economy.

Laser-welded ground electrode with copper-core heat dissipation prevents misfires in high-performance engines (V6/V8 applications).

Precision ceramic insulator rated for 40,000V insulation resistance, prevents carbon tracking in stop-start city driving conditions.

Direct replacement for Mercedes S-Class (W221), E-Class (W212/S212), CLS (C207), and legacy models requiring OEM 004.159.25.03 specification.

Bulk wholesale pricing available for repair shops – full OEM performance at aftermarket cost. Ships globally with plug gap pre-set for plug-and-play installation.