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SKU: GDE-MIN-R56-OS-8
Supertech Mini Cooper R56 N14 S 44.9mm Intake/Exhaust Valve Guides - Set of 8 2007-2011
Supertech 44.9mm intake and exhaust valve guides fit Mini Cooper R56 models with N14 engines from 2007 to 2011. This set of 8 replaces worn guides in performance builds for better valve sealing and longevity. Engineered for direct replacement with precise dimensions to maintain OEM tolerances under high boost.
Key Features
- Bronze Alloy Material: Manganese bronze construction provides superior wear resistance and thermal conductivity to handle turbocharged heat loads in N14 engines
- 44.9mm Length: Exact length matches factory specs for proper valve stem support and oil control in intake and exhaust positions
- Precision Machining: Ground to micron tolerances for interference press fit ensuring zero movement during high RPM operation
- Oversize Design (OS): Accommodates aftermarket oversized valves while restoring head integrity after guide removal
- Set of 8: Complete coverage for all 16 valves (4 intake 4 exhaust per bank) simplifying full valvetrain refresh
Product Notes
- Inspect cylinder head for wear before installation and machine as needed for oversize guides
- Clean guides thoroughly before pressing to avoid contamination
- Packaged in protective tube to prevent damage during transit
Installation Notes
- Professional installation recommended.
- Requires valve guide puller and press driver tool for removal and insertion
- Compatible with stock or ported N14 cylinder heads no additional hardware needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2007-2010 | MINI | Cooper S | R56 N14 |
| 2008-2011 | MINI | Cooper S Clubman | R55 N14 |
| 2008-2011 | MINI | Cooper S Convertible | R57 N14 |
| 2009-2011 | MINI | Cooper S JCW | R56 N14 |
Why Choose Supertech?
- Developed for racing applications in WRC and endurance series
- High-strength bronze alloy proven in turbocharged engines
- Machined in Italy with tight tolerances for repeatable performance
Frequently Asked Questions
- Q: Will these fit 2011 N14 engines in R56 Cooper S?
- A: Yes fits all 2007-2011 MINI R56 R55 R57 with N14B16 turbo engine including JCW variants
- Q: What material are the guides made from?
- A: Manganese bronze alloy for maximum durability heat transfer and resistance to galling on valve stems
- Q: Do these require head machining?
- A: Oversize guides need head boring to 13.55mm OD confirm with machine shop using Supertech specs
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective plastic tube inside 6 x 4 x 1 inch box
- Weight: 0.4 lbs
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