Pro Series N55 E82 E90 F10 F30 OEM Cylinder Head Stud Set (Inc. M135i, 335i, 535iX & 740i)

Pro Series N55 E82 E90 F10 F30 OEM Cylinder Head Stud Set (Inc. M135i, 335i, 535iX & 740i)

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BMW N55 Engine Pro-Series 18.8 Cylinder Head Stud Set

Replacing the original cylinder head screws with high-strength Pro-Series 18.8 studs.
This is necessary when making large increases in performance, as the original cylinder head screws elongate during operation and the cylinder head can lift off.
The Pro-Series 18.8 stud bolts with a tensile strength of 1850 N / mm² provide a solution to this.

In addition, these stud bolts do not have to be replaced after dismantling but can be reused.

The Pro-Series 18.8 sets are high-strength stud bolts manufactured in Germany.
A special steel is used which, after tempering, has a tensile strength of 1850 + N / mm².
All threads are formed and not cut as usual. The so-called rolling of threads can increase the strength of the tooth flanks by around 30%. All Pro-Series products are supplied with a nickel coating protecting against corrosion in the long term, even under the toughest conditions. Pro-Series stud bolts have a hexagon socket drive on the head side for screwing in the stud bolts. Due to a cone on the engine block side of the bolt, these are not supported on the thread flanks when the nuts are tightened, but in the bore of the thread in the engine block. This support protects the threads when racing engines are frequently rebuilt.

Pro-Series advantage over other manufacturers is the nuts and washers included in the set, these also have a tensile strength of 1850 N / mm

Tensile strength: PS 18.8 steel / 1850+ N/mm² (270,000+PSI)


  • 4x stud bolt (M9)
  • 10x stud bolt (M11)
  • 4x nuts (M9)
  • 10x nuts (M11)
  • 14x washers
  • Assembly paste
  • Assembly instructions

 

N55 Engine

  • 1' E88   (09/2009 — 10/2013)
    • 135i
  • 1' E82   (09/2009 — 10/2013)
    • 135i
  • 1' F20   (07/2010 — 02/2015)
    • M135i & M135ix
  • 1' F20 LCI   (05/2014 — 06/2016)
    • M135i & M135ix
  • 1' F21   (07/2010 — 02/2015)
    • M135i & M135ix
  • 1' F21 LCI   (06/2014 — 06/2016)
    • M135i & M135ix
  • 2' F22   (10/2012 — 06/2016)
    • M235i & M235ix
  • 2' F23   (03/2014 — 06/2016)
    • M235i & M235ix
  • 3' E90 LCI   (09/2009 — 12/2011)
    • 335i & 335xi
  • 3' E91 LCI   (09/2009 — 05/2012)
    • 335i & 335xi
  • 3' E92 LCI   (11/2008 — 06/2013)
    • 335i & 335xi
  • 3' E93 LCI   (11/2008 — 10/2013)
    • 335i
  • 3' F30   (04/2011 — 07/2015)
    • 335i, 335ix & Hybrid 3
  • 3' F31   (08/2011 — 06/2015)
    • 335i & 335ix
  • 3' F34 GT   (07/2012 — 06/2016)
    • 335i & 335ix
  • 4' F32   (11/2012 — 06/2016)
    • 435i & 435ix
  • 4' F33   (03/2013 — 06/2016)
    • 435i & 435ix
  • 4' F36 Gran Coupé   (07/2013 — 06/2016)
    • 435i & 435ix
  • 5' F07 GT   (09/2008 — 06/2013)
    • 535i & 535ix
  • 5' F07 GT LCI   (08/2012 — 02/2017)
    • 535i & 535ix
  • 5' F10   (01/2009 — 06/2013)
    • 535i, 535ix & Hybrid 5
  • 5' F10 LCI   (08/2012 — 10/2016)
    • 535i, 535ix & Hybrid 5
  • 5' F11   (02/2009 — 06/2013)
    • 535i & 535ix
  • 5' F11 LCI   (10/2012 — 02/2017)
    • 535i & 535ix
  • 6' F06 Gran Coupé   (05/2011 — 02/2015)
    • 640i & 640ix
  • 6' F06 Gran Coupé LCI   (06/2014 — 09/2018)
    • 640i & 640ix
  • 6' F12   (10/2009 — 02/2015)
    • 640i & 640ix
  • 6' F12 LCI   (07/2014 — 05/2018)
    • 640i & 640ix
  • 6' F13   (04/2010 — 02/2015)
    • 640i & 640ix
  • 6' F13 LCI   (05/2014 — 10/2017)
    • 640i & 640ix
  • 7' F01 LCI   (05/2011 — 05/2015)
    • 740i & Hybrid 7
  • 7' F02 LCI   (05/2011 — 05/2015)
    • 740Li, 740Lix & Hybrid 7L
  • X1 E84   (04/2009 — 04/2015)
    • X1 35ix
  • X3 F25   (07/2009 — 08/2017)
    • X3 35ix
  • X4 F26   (06/2013 — 03/2018)
    • X4 35ix
  • X5 E70 LCI   (04/2009 — 06/2013)
    • X5 35ix & X5 40ix
  • X5 F15   (08/2012 — 06/2018)
    • X5 35i & X5 35ix
  • X6 E71   (07/2009 — 06/2014)
    • X6 35ix & X6 40ix
  • X6 F16   (09/2013 — 05/2019)
    • X6 35i & X6 35ix

 

To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your registration number(UK) or the last 7 digits of your VIN. Simply enter your car details prior to checkout.

 

P102061410

 

Manufactured by

Pro Series