Give your Mini Cooper S the boost it deserves with this upgraded USA-built billet turbocharger from PTTURBO.COM — engineered for performance, reliability, and direct OEM fitment.

This turbo is a drop-in replacement for the factory unit on 2009–2013 Mini Cooper S models with the 1.6L 4-cylinder engine. What sets it apart is the 100% CNC-machined compressor wheel made from 7075-T6 aluminum billet — delivering stronger performance, faster spool-up, and improved durability over standard cast components.

Key Performance Upgrades:

• Billet Compressor Wheel (7075-T6 Aluminum): Aerospace-grade construction provides lighter weight, better airflow, and quicker spool compared to cast wheels
• VSR Balanced to 100,000 RPM: Balanced in the USA for long-lasting, vibration-free operation
• Direct OEM Replacement: Bolts directly in place of your factory turbo — no modifications required
• Includes new wastegate actuator and gasket kit for easy, complete installation
• High-Strength Housing: Cast iron turbine and aluminum compressor housing for excellent thermal stability
• Warranty: Backed by a 1-Year Manufacturer Warranty

OE / OEM Part Numbers:

• 53039700118 / 53039700163

Interchange Part Numbers:

• 11657595351
• 5303-970-0118
• 5303-970-0181
• 5303-988-0163
• 5303-98

Vehicle Fitment:

• 2009–2013 Mini Cooper S (1.6L 4-Cylinder Turbocharged Engine)

Why Upgrade?

• Faster spool = better throttle response and low-end torque
• Billet wheel design boosts airflow and power potential
• Designed to last — assembled and VSR-balanced in the USA
• Easy install with all required components included

Installation Notes:
This is a plug-and-play replacement, but we recommend professional installation. Be sure to prime the turbo with oil, inspect feed lines, and replace engine oil, oil filter, and air filter during install for best results.

Experience increased responsiveness, smoother power delivery, and longer-lasting turbo performance with this precision-built Mini Cooper upgrade.

California buyers: Sales tax applies
We respond to emails during business hours (Mon–Fri, Pacific Time). Closed on weekends and holidays.

About This Billet Turbocharger — Mini Cooper S 1.6L (2009–2013)

The 2009–2013 Mini Cooper S uses an IHI turbocharger (part numbers 53039700118 and 53039700163 cover the application across variants) on the Prince 1.6L turbocharged four-cylinder engine shared with the Peugeot-Citroen family. This small, high-speed turbocharger delivers the peppy performance the Cooper S is known for — but it operates at very high shaft speeds to compensate for the small displacement and compact packaging, making it one of the more failure-prone turbos in the compact European car market.

This billet upgrade version replaces the OEM cast aluminum compressor wheel with a billet machined wheel, improving efficiency, raising the flow ceiling, and eliminating the compressor wheel as a potential failure point at elevated boost pressures.

Why the Mini Cooper S Turbo Fails

• Extended oil change intervals — the 1.6T is extremely sensitive to oil condition
• Carbon buildup on the turbine side from direct injection oil vapor — especially on high-mileage units
• Coolant line failure — the water-cooled bearing housing depends on intact coolant lines
• Boost creep from aftermarket tunes overdriving the stock turbo beyond its design range

Billet Wheel Benefits for the Cooper S

The billet compressor wheel in this unit handles higher shaft speeds and elevated boost pressures without the fatigue cracking risk of the OEM cast wheel. For stock applications, it provides a small efficiency improvement. For modified Cooper S builds running elevated boost, it is a meaningful durability and flow upgrade. PT Turbo in San Bernardino, CA can advise on fitment across R55, R56, R57, R58, and R59 body styles — contact us before ordering if you have a specific variant question.

Confirming the Mini Cooper S turbo has failed? Our guide to 7 warning signs your turbocharger is failing covers small-displacement turbo symptoms.