Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2011 BMW 135i 2D Convertible, StandardFACTORY OEM SERVICE PROCEDURE
Engine - Tightening Torques
- Camshaft (N54)
- Camshaft (N55)
- Connecting Rods And Bearings (N55)
- Connecting Rods And Bearings (N54)
- Coolant Pump With Drive (N54)
- Coolant Pump With Drive (N55)
- Crankshaft And Bearings (N55)
- Crankshaft And Bearings (N54)
- Cylinder Head And Cylinder Head Cover (N54)
- Cylinder Head And Cylinder Head Cover (N55)
- Emissions Control, Control Sensor/Monitoring Sensor (N54)
- Emissions Control, Control Sensor/Monitoring Sensor (N55)
- Engine Block (N54)
- Engine Block (N55)
- Exhaust Manifold (N55)
- Exhaust Manifold (N54)
- Fan (N55, N54)
- Flywheel (N54)
- Flywheel (N55)
- Housing Covers (N54)
- Intake Manifold (N55)
- Intake Manifold (N54)
- Oil Filter And Lines (N55)
- Oil Filter And Lines (N54)
- Oil Pump With Strainer And Motor (N54)
- Oil Pump With Strainer And Motor (N55)
- Oil Sump (N54)
- Oil Sump (N55)
- Standard Screw Connection (N55)
- Thermostat And Connections (N54)
- Thermostat And Connections (N55)
- Turbocharger And Control (N55)
- Turbocharger And Control (N54)
- V-Ribbed Belt With Tension And Deflection Element (N54)
- V-Ribbed Belt With Tension And Deflection Element (N55)
- Vacuum Pump (N54)
- Vacuum Pump (N55)
- Variable Camshaft Control (N55)
- Variable Camshaft Control (N54)
- Variable Valve Gear (N55)
- Vibration Damper (N55)
- Vibration Damper (N54)
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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