Crankshaft Pulley & Harmonic Balancer Puller Tool – Mini W10 / W11 Engines

This specialized puller tool is developed for safe removal of the crankshaft pulley (harmonic balancer) on Mini W10 and W11 engines. It enables controlled extraction while minimizing the risk of damage to the crankshaft and surrounding components.

Design & Functionality

The tool features a slotted pressure plate, allowing flexible adjustment to accommodate both types of W11 pulleys. The working range covers bolt circles from 30 mm to 85 mm, ensuring broad compatibility.

A central pressure screw with a ball tip ensures even force distribution during removal, reducing stress on components and improving operational control.

To protect the crankshaft, a dedicated pressure pin is included. This must be installed into the crankshaft prior to using the puller, preventing damage to the crankshaft nose during extraction.

Special Instructions for W10 Engines

For W10 engines, the mounting procedure differs slightly. The bolt heads with M8 washers must be positioned behind the pulley using a bayonet-style insertion.

For proper fixation to the puller plate, additional hardware is required:

• 3 × washers
• 3 × M8 nuts

Vehicle Compatibility

Suitable for BMW Mini models:

• Cooper
• Cooper S
• R50, R52, R53

Engine Compatibility

W10B14A
W10B16A
W11B16A

OEM Reference (for comparison)

as BMW 118450
as BMW 118441
as BMW 118270

Scope of Delivery

• 1 × Pressure plate Ø100 mm (slot range 30–85 mm)
• 1 × Pressure screw with ball (M12 × 1, length 125 mm, 19 mm drive)
• 1 × Pressure pin (M12 × 1.75, length 100 mm)
• 3 × Bolts M6 × 1 (length 75 mm)
• 3 × Bolts M8 × 1.25 (length 75 mm)
• 3 × Washers M6
• 3 × Washers M8

Important Technical Note

The pressure pin must always be installed before applying the puller. Skipping this step may result in permanent damage to the crankshaft.

OEM numbers are for reference only and do not imply original manufacturer supply.

MINI MINI (R50, R53) (06.2001 - 09.2006) Cooper (116 HP, 85 kW)

MINI MINI (R50, R53) (06.2001 - 09.2006) Cooper S (163 HP, 120 kW)

MINI MINI (R50, R53) (06.2001 - 09.2006) Cooper S (170 HP, 125 kW)

MINI MINI (R50, R53) (06.2001 - 09.2006) John Cooper Works (218 HP, 160 kW)

MINI MINI (R50, R53) (06.2001 - 09.2006) One (75 HP, 55 kW)

MINI MINI (R50, R53) (06.2001 - 09.2006) One (90 HP, 66 kW)

MINI MINI (R50, R53) (06.2001 - 09.2006) S Works (203 HP, 149 kW)

MINI MINI (R50, R53) (06.2001 - 09.2006) Works (210 HP, 155 kW)

MINI MINI Cabriolet (R52) (04.2004 - 07.2008) Cooper (116 HP, 85 kW)

MINI MINI Cabriolet (R52) (04.2004 - 07.2008) Cooper S (163 HP, 120 kW)

MINI MINI Cabriolet (R52) (04.2004 - 07.2008) Cooper S (170 HP, 125 kW)

MINI MINI convertible (R52) (04.2004 - 07.2008) John Cooper Works (210 HP, 155 kW)

MINI MINI Cabriolet (R52) (04.2004 - 07.2008) One (90 HP, 66 kW)

MINI MINI Cabriolet (R57) (10.2007 - 06.2015) Cooper S (170 HP, 125 kW)