Bosch 12-12-0-055-028 OEM Iridium Spark Plug M12x1.25

The Bosch 12-12-0-055-028 is a genuine OEM-specification iridium spark plug designed as a direct-fit replacement for BMW and MINI vehicles. Built to original equipment standards, this plug delivers reliable ignition performance, clean combustion, and long service life right out of the box.

Key Features:

• Iridium center electrode for superior conductivity and extended service life
• M12×1.25 thread pitch for precise OEM-spec fitment
• 14mm BiHex (12-point) hex for easy installation with standard tools
• Gasket seat design ensures a proper seal against the cylinder head
• 5 kOhm interference suppression to protect sensitive onboard electronics
• 0.8mm pre-set electrode gap factory-calibrated for optimal spark performance
• 26.5mm thread length with a 5mm spark position
• 23 Nm tightening torque specification for proper installation
• Ring-type (cup-shaped) connector for secure ignition wire connection

OEM Part Number: 12-12-0-055-028 (also referenced as 12120055028). Cross-references with BERU Z383, NGK, and Champion OE259 among others. Sold individually.