2002 2003 2004 2005 2006 Mini Cooper S 1.6L SOHC Supercharged Engine JDM W11B16A

Feature	Details
Engine Code	W11B16 (Supercharged)
Displacement	1.6 Liters (1,598 cc)
Configuration	Inline 4-Cylinder SOHC 16V
Induction	Eaton M45 Supercharger
Intercooler	Top-Mount Air-to-Air
Horsepower	163–168 hp @ 6,000 rpm
Torque	155–162 lb-ft @ 4,000 rpm
Block Material	Cast Iron (For extreme durability)

 

Vehicle Fitments

This JDM W11B16 long block is designed for the following North American (USDM) models:

• 2002-2006 Mini Cooper S Hatchback (R53 Chassis)

• 2005-2008 Mini Cooper S Convertible (R52 Chassis)

Note: This engine is not compatible with the base model (R50) naturally aspirated W10 engine or the later 2007+ Turbocharged (N14) engines.

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Installation & Technical Notes

The R53 powertrain is compact and requires specific maintenance during the swap to prevent common "Front End Service Mode" repeats:

• Long Block Conversion: This sale includes the engine block, cylinder head, and supercharger assembly. You must transfer your original USDM supercharger to ensure 100% compatibility with your vehicle's ECU.

• Crank Sensor O-Ring: The W11 engine is famous for oil leaks at the crank position sensor.¹ We recommend replacing this $\$5$ O-ring during the swap to keep your new engine bay clean.

• Essential Maintenance: We strongly recommend replacing the following parts during the swap:

  • Water Pump: Driven by the supercharger; replace now to avoid labor-intensive repairs later.

  • Spark Plugs: NGK BKR6EQUP (Laser Platinum).

  • Engine Oil: 5W-30 Full Synthetic (BMW Longlife-01 Spec).

  • Serpentine Belt: Replace with a high-quality belt (e.g., Continental or Gates).

• Cooling System: The R53 cooling system is sensitive to air pockets. You must follow the factory bleeding procedure using the two bleeder screws (one on the upper radiator hose and one near the thermostat) to prevent overheating.