BMW Ignition Service Kit - 12138647689KT9

Spark plugs wear out over the course of countless ignition cycles, during which deposits from fuel and oil may accumulate on the electrode. Faulty spark plugs can lead to poor engine performance, evidenced by reduced power, a misfire, and poor fuel economy.

Ignition coils provide the energy required for the spark plug to ignite the fuel mixtures. Over countless of thousands of ignition cycles the ignition coils will wear out. We typically see ignition coil boots wear out causing poor insulation between the spark plug and coil.

Installation tips: Position the ignition coil and gently push it to the limit position, if necessary by twisting it back and forth slightly. Then check anti-twist lock. The rubber cap must completely surround the sealing collar of the cylinder head cover.

Please note Tightening torque for this spark plug is 23 ± 3 Nm, the gap is preset for OE applications only, a special 14mm, 12 point spark plug socket is required for removal and installation of this plug, please see p/n 83300495560 for the correct tool.

Center electrode core material: Copper
Center electrode tip material: Platinum
Electrical terminal type: Non-removable nut
Ground Configuration: Standard
Ground electrode core material: Copper
Ground electrode quantity: 1
Ground electrode tip design: SPE (Square platinum electrode)
Hex size: 14mm bi-hex (12 point) - see p/n 83300495560 for the correct socket
Thread size: 12x1.25mm
Torque spec: 23 ± 3 Nm (~17 ft-lb)
Insulator Height: 50mm
Manufacturer heat range: 5
Pre-gap size: .031" (.8mm) - Pregapped for OE applications
Reach: 26.5mm
Resistance: 80000 ohms
Resistor Type: Yes
Seat Type: Flat