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.
2021 BMW X4 M40iFACTORY OEM SERVICE PROCEDURE
Engine -- Tightening Torques (G02)
Select a section or procedure below to view factory instructions:
1100 Engine Mounting1111 MAIN BEARING CAP (X4 xDrive30i)1111 MAIN BEARING CAP (X4 M40i 2019-2021)1111 MAIN BEARING CAP (X4 M40i 2022-)1112 CYLINDER HEAD (X4 xDrive30i 2019-2021)1112 CYLINDER HEAD (X4 xDrive30i 2022-)1112 CYLINDER HEAD (X4 M40i 2019-2021)1112 CYLINDER HEAD (X4 M40i 2022-)1113 Engine Oil Pan1114 REAR TIMING CASE COVER (X4 xDrive30i)1114 REAR TIMING CASE COVER (X4 M40i)1121 Crankshaft Increment Wheel1122 Flywheel1123 ENGINE VIBRATION DAMPER (X4 xDrive30i 2019-2021)1123 ENGINE VIBRATION DAMPER (X4 xDrive30i 2022-)1123 ENGINE VIBRATION DAMPER (X4 M40i)1124 Connecting Rods1127 COUNTERBALANCE SHAFTS (X4 xDrive30i)1128 V Belt With Belt TENSIONER And Idler Pulley1130 Special Tool For Camshaft Alignment1131 CAMSHAFTS (X4 xDrive30i)1131 CAMSHAFTS (X4 M40i)1136 VARIABLE CAMSHAFT TIMING CONTROL SYSTEM (VANOS) (X4 xDrive30i 2019-2021)1136 VARIABLE CAMSHAFT TIMING CONTROL SYSTEM (VANOS) (X4 xDrive30i 2022-)1136 VARIABLE CAMSHAFT TIMING CONTROL SYSTEM (VANOS) (X4 M40i 2019-2021)1136 VARIABLE CAMSHAFT TIMING CONTROL SYSTEM (VANOS) (X4 M40i 2022-)1137 VARIABLE VALVE LIFT CONTROL SYSTEM (VALVETRONIC) (X4 xDrive30i)1137 VARIABLE VALVE LIFT CONTROL SYSTEM (VALVETRONIC) (X4 M40i)1141 ENGINE OIL PUMP (X4 xDrive30i)1141 ENGINE OIL PUMP (X4 M40i 2019-2021)1141 ENGINE OIL PUMP (X4 M40i 2022-)1142 ENGINE OIL FILTER (X4 xDrive30i 2019-2021)1142 ENGINE OIL FILTER (X4 xDrive30i 2022-)1142 ENGINE OIL FILTER (X4 M40i)1151 WATER PUMP (X4 xDrive30i 2019-2021)1151 WATER PUMP (X4 xDrive30i 2022-)1151 WATER PUMP (X4 M40i 2019-2021)1151 WATER PUMP (X4 M40i 2022-)1153 THERMOSTAT, COOLANT LINES (X4 xDrive30i 2019-2021)1153 THERMOSTAT, COOLANT LINES (X4 xDrive30i 2022-)1153 THERMOSTAT, COOLANT LINES (X4 M40i 2019-2021)1153 THERMOSTAT, COOLANT LINES (X4 M40i 2022-)1161 INTAKE SYSTEM (X4 xDrive30i 2019-2021)1161 INTAKE PLENUM (X4 xDrive30i 2022-)1161 INTAKE PLENUM (X4 M40i 2019-2021)1161 INTAKE PLENUM (X4 M40i 2022-)1162 EXHAUST MANIFOLD (X4 xDrive30i)1162 EXHAUST MANIFOLD (X4 M40i)1165 TURBOCHARGER (X4 xDrive30i)1165 TURBOCHARGER (X4 M40i 2019)1165 TURBOCHARGER (X4 M40i 2020-)1178 Oxygen Sensors
Factory Service Tools
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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.