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.

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HOMESERVICE MANUALSMINI2019COOPER BASE, 2D CONVERTIBLE, AUTOMATIC TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROL SYSTEMSENGINE - REPAIR (F57)11 12 CYLINDER HEAD WITH LIDREMOVING AND INSTALLING/SEALING CYLINDER HEAD COVER (B48 AND B46 ENGINE) (COOPER S AND JOHN COOPER WORKS)

2019 Mini Cooper Base, 2D Convertible, Automatic Trans

Removing and installing/sealing cylinder head cover (B48 and B46 engine) (Cooper S and John Cooper Works)

2019 Mini Cooper Base, 2D Convertible, Automatic TransSECTION Removing and installing/sealing cylinder head cover (B48 and B46 engine) (Cooper S and John Cooper Works)

Preliminary work needed:

Remove CLEAN AIR PIPE .
Remove ALL INJECTORS .
REMOVE FEED LINE .
Remove HIGH PRESSURE PUMP .
Remove BOTH ACTUATORS .
Release WIRING HARNESS FOR INJECTORS in area of cylinder head cover.
Release WIRING HARNESS FOR SENSOR SYSTEM in area of cylinder head cover.

Removal:

Slacken nut (1).

Remove holder (2).

G11644895

Courtesy of BMW OF NORTH AMERICA, INC.

Detach coolant lines (1) from holder.

G11644896

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Have a cleaning cloth ready. A small quantity of motor oil will leakage after the screw connection has been released.
Make sure no motor oil runs onto belt drive.

Remove screw (1).

Detach oil feed line (2) from cylinder head.

G11644897

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 1: Cylinder Head Cover Screws Loosening Sequence

G11644898

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws in the sequence 15 - 1 .

Remove cylinder head cover.

Replacement:

Remount PULSE SENSOR ON INTAKE CAMSHAFT .
Remount PULSE SENSOR ON EXHAUST CAMSHAFT .

Installation:

Parts : Replace profile seal (1).

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Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: The cylinder head cover (1) must not tap the high pressure pump bracket (2) in the marked area.

G11644900

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Cylinder Head Cover Screws Tightening Sequence

G11644898

Courtesy of BMW OF NORTH AMERICA, INC.

Position cylinder head cover.

IMPORTANT: Risk of damage to cylinder head cover!

Make sure that the cylinder head cover does not tap the high pressure pump bracket!

Join all cylinder head cover screws for 1/2 revolution in the sequence 1 - 15 .

Tighten cylinder head cover screws in the sequence 1 - 15 .

Tightening torque: 11 12 3AZ .

Parts : Replace O-ring (1).

G11644902

Courtesy of BMW OF NORTH AMERICA, INC.

Install oil feed line (2).

Tighten screw (1).

Tightening torque 11 42 4AZ .

G11644897

Courtesy of BMW OF NORTH AMERICA, INC.

Clip in coolant line (1) into the holder.

G11644896

Courtesy of BMW OF NORTH AMERICA, INC.

Position holder (2) on cylinder head.

Tighten nut (2).

G11644895

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work:

Install ALL INJECTORS .
Install HIGH PRESSURE PUMP .
Install FEED LINE .
Install BOTH ACTUATORS .
Route and connect WIRING HARNESS FOR INJECTORS .
Route and connect WIRING HARNESS FOR SENSOR SYSTEM .
Install CLEAN AIR PIPE .

RENDER: 1.0x

NO RELATED

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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.