S42 - S42 Turbocharger MINI Cooper Upgraded Turbo K03 - JMTC
S42 Turbocharger MINI Cooper Upgraded Turbo K03 - JMTC
Discover the incredible JMTCs Super 42 high-pressure, high-flow dual-scrolling turbo upgrade by JM Turbo Cooper, designed for enthusiasts craving peak performance. With a substantial 42mm compressor, this turbocharger is engineered to deliver early and extended boost compared to the JWC turbo, resulting in outstanding response, torque, and power gains across the entire power band. The 42mm design also ensures an added kick at the top end when you need it most, making it the ultimate choice for those seeking an extreme street upgrade that delivers full race performance. It provides impressive torque, quick spooling, and extended durability. For race applications, consider pairing it with one of our aftermarket exhaust systems to unlock its full potential.
It's important to note that unlocking the extra power requires a custom tune. Running this turbo without a tune will result in minimal to no HP gain.
Estimated Performance Gains:
Approximately 60hp with a custom tune, intercooler, downpipe, cold air intake, new plugs, basic maintenance, and carbon blasting/cleaning.
100hp+ (All of the above) in combination with a ported head, larger valves, ICE pipe, intercooler, and a 2.3/4"+ exhaust.
Please ensure you have a cleaned or new aftermarket catalytic converter and intercooler to avoid potential boost codes.
Key Features of the Upgraded Turbo:
Brand new turbo with a 42mm compressor
Lightened high-flow exhaust turbine
High-strength K04 internals
Upgraded 360-degree bearing
Designed for higher pressure
High-temperature alloy turbine housing
Dual-scrolling turbine housing
Water-cooled bearing housing
Compatible with OEM Intake Boot (N14) and N18 Engines with some adjustments
Fits AEM intake, NM Eng intake, and Forge Intake (Boot) Hose with minor adjustments.
JM Turbo Cooper introduces the JMTCs Super 42, a high-pressure, high-flow dual-scrolling turbo upgrade, designed for those seeking peak performance. With a substantial 42mm compressor, this turbocharger delivers early and extended boost compared to the JWC turbo. The result is exceptional response, torque, and power gains across the entire power band, with an added punch at the top end when it's needed most. If you're in pursuit of an extreme street upgrade that provides full race performance, this turbo is your ideal choice. It offers impressive torque, quick spooling, and extended durability. For race applications, consider pairing it with one of our aftermarket exhaust systems to unlock its full potential.
It's important to note that achieving the extra power requires a custom tune. Running without a tune will yield minimal to no HP gain.
Estimated Performance Gains:
Approximately 60hp with a tune, intercooler, downpipe, cold air intake, new plugs, basic maintenance, and carbon blasting/cleaning.
100hp+ (All of the above) in combination with a ported head, larger valves, ICE pipe, intercooler, and a 2.3/4"+ exhaust.
Please ensure you have a cleaned or new aftermarket catalytic converter and intercooler to avoid potential boost codes.
Key Features of the Upgraded Turbo:
Brand new with a 42mm compressor
Lightened high-flow exhaust turbine
High-strength K04 internals
Upgraded 360-degree bearing
Designed for higher pressure
High-temperature alloy turbine housing
Dual-scrolling turbine housing
Water-cooled bearing housing
Compatible with OEM Intake Boot (N14) and N18 Engines with some adjustments
Fits AEM intake, NM Eng intake, and Forge Intake (Boot) Hose with minor adjustments.
Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.
Prop 65 Warning
Product Q&A
Lifetime Replacement
This Product Is Covered By Our Lifetime Replacement Program
Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.
If you have any questions, would like to learn more or are ready to place a replacement claim, click here!
Fits These Cars
MAKE
MODEL
SUBMODEL
ENGINE
YEAR
CHASIS
Special Fitment Notes
MINI
All
Cooper S
All
All
R58
Use vehicle selector to confirm fitment
MINI
All
Cooper S
All
All
R59
Use vehicle selector to confirm fitment
MINI
All
John Cooper Work
All
All
R56
Use vehicle selector to confirm fitment
MINI
All
John Cooper Work
All
All
R57
Use vehicle selector to confirm fitment
MINI
All
John Cooper Work Clubman
All
All
R55
Use vehicle selector to confirm fitment
MINI
All
John Cooper Works
All
All
R56
Use vehicle selector to confirm fitment
MINI
All
John Cooper Works
All
All
R57
Use vehicle selector to confirm fitment
MINI
All
John Cooper Works
All
All
R58
Use vehicle selector to confirm fitment
MINI
All
John Cooper Works
All
All
R59
Use vehicle selector to confirm fitment
MINI
All
John Cooper Works
All
All
R60
Use vehicle selector to confirm fitment
MINI
All
John Cooper Works
All
All
R61
Use vehicle selector to confirm fitment
MINI
All
John Cooper Works Clubman
All
All
R55
Use vehicle selector to confirm fitment
MINI
All
John Cooper Works WC50
All
All
R56
Use vehicle selector to confirm fitment
MINI
All
S
All
All
R56
Use vehicle selector to confirm fitment
MINI
All
S
All
All
R57
Use vehicle selector to confirm fitment
MINI
All
S
All
All
R60
Use vehicle selector to confirm fitment
MINI
All
S
All
All
R61
Use vehicle selector to confirm fitment
MINI
All
S ALL4
All
All
R60
Use vehicle selector to confirm fitment
MINI
All
S ALL4
All
All
R61
Use vehicle selector to confirm fitment
MINI
All
S Clubman
All
All
R55
Use vehicle selector to confirm fitment
*The above product applications have been written by Turner Motorsport. All
warranties, product application, fitment, and performance are the responsibility of Turner Motorsport.
For additional information see the terms of use.