SneedSpeed 2007–2010 N14 Remanufactured Cylinder Head — R55/R56 MINI Cooper S / JCW
The factory N14 cylinder head gets tired. Warped decks, worn guides, leaking seals, valve issues, and poor sealing are all common when these engines have lived a hard life.
The SneedSpeed N14 Remanufactured Cylinder Head is built to bring the top end back stronger, cleaner, and ready for real use. This is a direct replacement cylinder head for 2007–2010 R55/R56 MINI Cooper S and JCW models with the turbocharged N14 engine, remanufactured on the same equipment we use for SneedSpeed race engines.
This is not a junkyard head cleaned up and thrown in a box. This is a properly machined, pressure-tested, ready-to-install top-end assembly built for reliability, sealing, and performance potential.
Built to Fix the Real N14 Problems
N14 engines are known for top-end wear, sealing issues, valve seal problems, and cylinder heads that no longer seal the way they should. When the head is warped, worn, or tired, replacing gaskets alone is not enough.
The SneedSpeed remanufactured N14 head is built for engine rebuilds, long block assemblies, performance refreshes, and customers who want to stop gambling on used factory parts.
Key Features
Direct replacement for N14 MINI engines
Fits compatible 2007–2010 R55/R56 MINI Cooper S and JCW models with the turbocharged N14 engine.
Precision remanufactured
Each head is cleaned, inspected, pressure tested, and machined to strict SneedSpeed standards.
Decked for proper sealing
The cylinder head deck is machined true to help restore proper head gasket sealing and compression integrity.
New valve guides, valves, and seals
Worn factory components are replaced to improve reliability, oil control, and long-term service life.
Three-angle valve job
Improves valve sealing and combustion efficiency compared to a worn factory head.
Complete assembled head
Supplied with installed cams, rockers, lifters, and internal valve train components to reduce install hassle.
Built on race-engine equipment
Remanufactured using the same machines and processes trusted in SneedSpeed performance engine builds.
Available Performance Levels
Street Series
Built for stock or lightly modified N14 engines where reliability, drivability, and proper sealing are the priority.
Sport Series
Adds performance camshafts and beehive valve springs for better airflow and stronger performance potential. With proper tuning and supporting modifications, the Sport Series head helps the N14 breathe better and pull harder through the mid-to-upper RPM range.
Why Upgrade?
A worn cylinder head kills performance, sealing, reliability, and confidence. The N14 already works hard with boost, heat, and mileage. Once the head is worn or warped, the engine is living on borrowed time.
The SneedSpeed remanufactured N14 cylinder head gives you a fresh, properly prepared top end instead of trusting an unknown used part.
Best For
2007–2010 MINI Cooper S and JCW N14 engines
R55 and R56 chassis models
Engine rebuilds and long block builds
Head gasket repairs
Warped or damaged cylinder head replacement
Tuned street cars
Customers upgrading to a stronger top-end foundation
Fix the head. Seal the engine. Build it right.
That is how you keep an N14 alive instead of repairing the same weak points twice.
