JMTC Upgraded Intake Valve +1mm SST Tripped Groove

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Product Overview

JMTC Upgraded Mini Cooper Intake Super Alloy Valve


Brand/Manufacture: JMTC

OEM Cross Reference: 11347587470

Valve Head Diameter: 29.8mm (OEM 28.8mm)

Valve Stem Diameter: 5mm

Undercut Stem: Yes

Valve Material: 21-4N stainless steel

Lock Groove Quantity: 3-groove (works with OEM retainers)

Lock Groove Style: Mini Cooper

Quantity Required for Mini Cooper 4cly: 8

Engine: N14


Vehicles this Part Fits


  • MINI R56   (11/2006 — 07/2010)
  • MINI R56 JCW   (01/2008 — 06/2012)
  • MINI Clubman R55   (10/2006 — 07/2010)
  • MINI Clubman R55 JCW  (01/2010 — 06/2012)
  • MINI Cabrio R57   (11/2007 — 07/2010)
  • MINI Cabrio R57 JCW   (01/2010 — 07/2012)
  • MINI Coupé R58 JCW  (12/2010 — 07/2012)
  • MINI Roadster R59 JCW  (05/2011 — 06/2012)


Valve Features and Additional info


JMTC Upgraded Stainless Intake valves are 1mm larger than the OEM valve and are a one piece forged valve for higher strength and reliability. JMTC uses high temp super alloy 21-4N and receive a high temperature friction reducing coating and work best with our long life steal guides. They have hardened tips so they can withstand both high-heat of a turbocharged engine and high-valve train stress loads of RPMs above the rev limit.


Our Valves are a great replacement for the OEM valve and do not require any changes to fit or work with all the OEM components regardless if you want to upgrade or not. While our upgraded Intake vavles can be used with the OEM or any manufacture exhaust valves they can not be mixed with other intake valves. So purchase them in a quantity of 8 for the 4cly Mini Cooper engine.



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