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Porsche > Boxster 718 (982) 2017>> > Wheel Accessories > Wheel Hub Studs >

Wheel hub stud, Standard. Porsche 911 / 944 / 914 / 924 / 964 / 993 / 968  ❭  99333167104

Wheel hub stud, Standard. Porsche 911 / 944 / 914 / 924 / 964 / 993 / 968 - 99333167102, 90133167101, 91133167100, 90434167100, 90134167105, 99333167103, 99333167104 - PS8960, 1660400300
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99333167104/1
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Product Information

Wheel Hub Stud, Standard 
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Replace damaged or worn wheel mounting hardware with this OE Match Standard Wheel Hub Stud. Wheel studs are pressed into the hub and provide the threaded mounting points for the wheel nuts. Their condition is essential for securely locating and retaining the wheel against the hub.

Fits:

  • Porsche 911 1965-1968 2.0L / 912 SWB (F)
  • Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
  • Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
  • Porsche 911 1978-1983 3.0L / SC
  • Porsche 911 1984-1986 3.2L
  • Porsche 911 1987-1989 3.2L G50
  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) RS 3.8L 1991-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93
  • Porsche 993 (911) C2 1994-97
  • Porsche 993 (911) C4 1994-97
  • Porsche 993 (911) RS 1994-97
  • Porsche 993 (911) C2S 1994-97
  • Porsche 993 (911) C4S 1994-97
  • Porsche 993 (911) TURBO 1994-96
  • Porsche 993 (911) GT2 1994-97
  • Porsche 993 (911) TURBO S 1994-97
  • Porsche 924 2.0L 1976-79
  • Porsche 924 2.0L 1980-85
  • Porsche 924 Turbo 2.0L 1979-81
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GT 2.0L 1981
  • Porsche 924 Carrera GTS 2.0L 1982
  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944 2.7L 8V 1988-89
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944S2 3.0L 16V 1989-91
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 944 Turbo 2.5L 8V 1989-91
  • Porsche 944 Turbo S 2.5L 8V 1988
  • Porsche 968 3.0L 1992-94
  • Porsche 968 Sport 3.0L 1994-95
  • Porsche 968 CS 3.0L 1993-95
  • Porsche 968 Turbo S 3.0L 1993-94
  • Porsche 914 (1970-1976)

What Does a Wheel Hub Stud Do?

Each wheel stud passes through the hub and provides a strong threaded fixing for the wheel nut.

When the wheel nuts are correctly tightened, the studs provide the clamping force required to securely hold the wheel against the hub.

A correctly functioning wheel stud helps:

  • Secure the wheel to the hub
  • Provide the mounting thread for the wheel nut
  • Maintain correct wheel clamping force
  • Allow safe wheel installation and removal
  • Keep the wheel correctly seated against the hub

Why Do Wheel Hub Studs Fail?

Wheel studs are strong components but can become damaged through repeated wheel removal, incorrect tightening or corrosion.

Common causes include:

  • Damaged or stripped threads
  • Cross-threaded wheel nuts
  • Excessive wheel nut torque
  • Corrosion Impact damage
  • Incorrect wheel installation
  • Repeated use of unsuitable tools
  • General wear from frequent wheel changes

Using an impact wrench incorrectly or overtightening wheel nuts can stretch or damage the stud and its threads.

When Should a Wheel Stud Be Replaced?

Replacement should be considered if:

  • Threads are stripped or damaged
  • A wheel nut will not tighten correctly
  • The stud is bent or distorted
  • Heavy corrosion is present
  • The stud has been cross-threaded
  • A stud has broken
  • The stud is loose within the hub
  • Damage is discovered during wheel or brake servicing

A damaged wheel stud should not be reused, as correct wheel clamping depends on the condition of both the stud and wheel nut.

Important Wheel Mounting Checks

When replacing a wheel stud, inspect the wheel nut and hub for corresponding damage.

Wheel nuts should thread smoothly onto the studs by hand before final tightening. Always tighten wheel nuts to the correct specified torque.

If several studs show similar corrosion or thread damage, inspect the remaining studs and consider replacing any that are no longer serviceable.

Wheel Studs

Wheel studs are an essential part of the wheel and hub assembly on many classic and modern-classic Porsche models.

Although designed for long service life, repeated wheel removal, corrosion, cross-threading and excessive tightening can eventually damage the threads or weaken the stud.

When carrying out wheel, brake or hub maintenance, each stud should be inspected for damaged threads, corrosion or distortion. Replacing defective studs helps ensure the wheel can be correctly and securely mounted.



Related reference numbers
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99333167104
99333167102
90133167101
91133167100
90434167100
90134167105
99333167103
99333167104

The product you are viewing cross references to these numbers
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Open Ended Wheel Nut – Ball Seat R14 (Chrome Finish)
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Secure your Porsche wheels with confidence using this OE Match Open Ended Wheel Nut featuring an R14 Ball Seat and durable Chrome Finish. Designed for use on a wide range of modern and classic Porsche models, this high-quality wheel nut is ideal for vehicles fitted with wheel stud conversions, wheel spacers or motorsport-style wheel fastening systems.

Unlike standard closed-end wheel nuts, the open-ended design allows longer wheel studs to pass completely through the nut. This makes them the preferred choice when installing wheel spacers, aftermarket hubs or extended wheel studs, ensuring full thread engagement while maintaining safe and secure wheel retention.

Manufactured to OE Match standards, these wheel nuts provide excellent strength, corrosion resistance and an attractive chrome finish, making them suitable for both road and performance applications.

What Does an Open Ended Wheel Nut Do?

Wheel nuts secure the wheel to the vehicle's hub by clamping it firmly against the mounting face.

The open-ended design allows:

  • Use with extended wheel studs
  • Installation of wheel spacers
  • Compatibility with stud conversion kits
  • Maximum thread engagement
  • Easy inspection of stud length
  • Secure wheel fastening
  • Motorsport-style wheel installation

The R14 ball seat profile is designed to match compatible Porsche alloy wheels, ensuring the correct seating angle and load distribution.

Why Upgrade to Open Ended Wheel Nuts?

Open-ended wheel nuts are essential whenever longer wheel studs are fitted.

They are commonly used for:

  • Wheel spacer installations
  • Wheel stud conversions
  • Motorsport applications
  • Track day vehicles
  • Performance wheel upgrades
  • Custom Porsche builds
  • Classic Porsche restorations

The chrome finish also enhances the appearance of exposed wheel hardware while offering excellent corrosion resistance.

Why Do Wheel Nuts Need Replacing?

Wheel nuts experience repeated tightening and removal throughout their service life.

Common causes of wear include:

  • Thread damage
  • Over-tightening
  • Corrosion
  • Impact gun damage
  • Rounded hex faces
  • Ball seat wear
  • Incorrect installation

Damaged wheel nuts should never be reused, as they may no longer provide the correct clamping force or safe engagement.

Symptoms of Worn Wheel Nuts

Replacement is recommended if you notice:

  • Damaged threads
  • Rounded hexagon head
  • Corrosion
  • Cracked chrome finish
  • Ball seat wear
  • Difficulty achieving correct torque
  • Visible distortion
  • Poor engagement with wheel studs

Maintaining good-quality wheel hardware is essential for both safety and long-term reliability.

When Should Wheel Nuts Be Replaced?

Replacement is recommended when:

  • Installing wheel stud conversion kits
  • Fitting wheel spacers
  • Upgrading alloy wheels
  • Threads become damaged
  • Corrosion develops
  • During suspension or hub refurbishment
  • Preparing a track or competition car
  • Carrying out preventative maintenance

Many Porsche specialists replace wheel nuts whenever extended wheel studs are installed to ensure full compatibility.

Why OE Match Wheel Nuts?

Benefits include:

  • OE-quality manufacturing
  • Strong and durable construction
  • Attractive chrome finish
  • Corrosion resistance
  • Suitable for extended wheel studs
  • Correct R14 ball seat profile
  • Safe and secure wheel clamping
  • Direct replacement quality       



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Rennline Steel Lug Nuts. Porsche 996/997/991/Boxster/Cayman/Panamera/Cayenne - N0201121 - LS02
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Rennline Steel Lug Nuts. CONICAL

rennline

Kit includes:
(20) Conical Seat Nuts, Open Ended - For aftermarket wheels with Conical seats

Fits:
Porsche 996
Porsche 997
Porsche 991
Porsche Boxster
Porsche Cayman
Porsche Panamera
Porsche Cayenne

Are you still using those factory aluminum lug nuts that are prone to cracking, stripping, and seizing up? Save the hassle and switch to these steel nuts which are required for most organized track/race events.

Note: Check your wheels as original Porsche wheels use ball seat nuts.

Note: Pictures may not show actual product.

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20 M14x1.5 Competition Studs 20 M14x1.5 Ball Seat Nuts to fit original or OEM Porsche wheels.

rennline

Please note the 60mm studs are LONG. For OEM wheels, most aftermarket wheels and even with most spacers 45mm will be long enough. Please measure and confirm you need this long of a stud before ordering the 60mm kit.

Rennline's competition wheel studs offer customers the ability to get rid of those bulky factory lug bolts that make those quick tire changes so cumbersome. These studs feature a bullet nose end to help locate the wheel, and heat treated grade 8 construction to excede the requirments outlined by SAE standards. These come standard with a Black Zinc coating which is far superior to the Black Oxide coating found on many other studs in the marketplace. Studs have been certified to meet ISO 898-1 class 10.9 requirements. These particular studs are an m14x1.5 thread commonly found on Porsche, Audi, and several other makes, and are available in 35mm, 45mm and 60mm lengths of useable thread. Sold as a complete kit with 20 studs and 20 nuts

• 15mm of threads on hub side
• 8mm of unthreaded shoulder for brake rotor
• 35mm, 45mm or 60mm of threaded stud from shoulder
• 12mm of bullet nose

Note: For installation, torque studs to 30 ft/lbs, and then torque nuts to factory specs. We generally do not recommend using loctite on these studs.

Ball Seat Lug Nuts. Are you still using those factory aluminum lug nuts that are prone to cracking, stripping, and seizing up? Save the hassle and switch to these steel nuts which are required for most organized track/race events.

Conical Seat Lug Nuts: Check your wheels as some aftermarket wheels do use Conical Nuts which an available option with this kit.