What is the tightening angle for Bosch spark plugs?

[SanWeston]

Bosch spark plug tightening angle: Rotate 180 degrees for new installation. For reuse, rotate 30 degrees. Torque for spark plug replacement: When replacing spark plugs yourself, the torque used should match the required torque of the specific spark plug. Different-sized spark plugs require different torque values. For example, 12mm spark plugs generally require 20-25N/m torque, while 14mm spark plugs typically need 25-30N/m torque for tightening. Therefore, proper installation torque is crucial when replacing spark plugs yourself - neither too loose nor too tight. Consequences of insufficient spark plug installation torque: If the spark plug isn't tightened with sufficient torque, it may lead to oil seepage and air leakage, affecting engine performance. Over-tightening spark plugs may cause thread stripping or breakage.