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Porsche // Cayman 987C / 981C (2005-2016) // Cayman S / R 3.4L 987C MKII 2009-12
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- 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 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- 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 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
PACK OF 20
Fits:
Porsche 911 1965-89
Porsche 964
Porsche 993
Porsche 944
Porsche 968
Porsche 928
Porsche 924
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99918200351
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Open Ended Wheel Nut – Ball Seat R14 (Chrome Finish)
Sold each
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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N0201121
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Silver-coloured high temperature paste for screw connections
Description
OPTIMOL PASTE TA for screw connections up to + 1100°C/+ 2012°F. It is used as assembly paste and
prevents seizing, welding or scaling. OPTIMOL PASTE TA ensures a good separating and sealing effect in high temperature and wet environments as well as under the influence of aggressive media.
Application:
For assembly of components subjected to corrosion, extreme temperatures and unfavorable environments such as
- screws, bushes and valves
- flanged joints and threaded tube connections
- positive-locking components
- seals, stuffing boxes and packaging
- light metal/steel friction surfaces
As basic or thin film lubrication for sliding surfaces under high thermal loads
Temperature application range - 40°C/-40°F to +1100°C / +2012°F
Advantages:
OPTITEC® - CASTROL OPTIMOL technology
high load carrying capacity
resistant to hot and cold water
immediate lubricating effect
economical in use
limited resistance to alkalis and acids
good corrosion protection
good separation ability
Technical Specifications:
NLGI 2
British Timken Classification DIN 51825
Classification K2K-30
Please note: This product is classed as dangerous / hazardous goods by the couriers. There might be additional costs applied for shipping it to you.
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00004330508
The product you are viewing cross references to these numbers
Open
Ended Wheel Nut (Black Finish)
Sold each
Complete your wheel installation with this Open Ended Wheel Nut, manufactured with an R14 ball seat and finished in a durable black coating for a subtle motorsport-inspired appearance.
Suitable for various classic and modern Porsche models, this open-ended wheel nut is commonly used with wheel stud conversions, wheel spacers and other applications where additional thread engagement is required. The open-ended design allows longer wheel studs to pass through the nut while maintaining full thread engagement for a secure installation.
Manufactured from high-strength steel and engineered to OE specifications, these wheel nuts provide excellent durability, precise fitment and dependable clamping performance for both road and track use.
What Does an Open Ended Wheel Nut Do?
The wheel nut secures the wheel firmly against the hub by clamping it onto the mounting face. This prevents wheel movement and ensures the wheel remains safely attached under braking, cornering and acceleration.
The open-ended design allows longer
wheel studs to extend through the nut, making it the preferred choice for:
- Wheel spacer installations
- Wheel stud conversion kits
- Motorsport applications
- Custom wheel installations
- Vehicles requiring increased thread engagement
The R14 ball seat matches the seat profile used on many genuine Porsche wheels, ensuring correct load distribution and secure wheel fitment.
Why Do Wheel Nuts Need Replacing?
Wheel nuts are subjected to repeated tightening, high clamping loads and continual exposure to road salt, moisture and brake heat.
Over time they can suffer from:
- Corrosion
- Damaged or worn threads
- Rounded hexagonal faces
- Distorted ball seats
- Cosmetic deterioration
- Damage caused by incorrect tools or over-tightening
Using worn or damaged wheel nuts can prevent correct torque from being achieved and may compromise wheel security.
When Should They Be Replaced?
Replacement is recommended whenever:
- Installing wheel spacers
- Carrying out a wheel stud conversion
- Threads become damaged
- The ball seat shows signs of wear
- Corrosion is present
- The hex has become rounded
- Fitting new wheels or refurbishing existing hardware
- Preparing a vehicle for track use
Replacing ageing wheel hardware is inexpensive preventative maintenance that helps ensure safe and reliable wheel retention.
Porsche Wheel Nuts, Stud Conversions & Wheel Hardware
Whether you're fitting wheel spacers, converting from wheel bolts to wheel studs or upgrading your Porsche for track use, high-quality wheel hardware is essential for both safety and reliability.
Open-ended wheel nuts are widely used in motorsport and performance applications because they provide greater flexibility when using longer wheel studs while maintaining the correct thread engagement. Combined with the correct R14 ball seat, they ensure even clamping force and secure wheel retention.
OE Match wheel hardware offers factory-quality fitment and dependable performance, making it suitable for everything from everyday road cars to dedicated competition vehicles.
Benefits of
OE Match Open Ended Wheel Nuts
- Ideal for wheel stud conversions
- Perfect for wheel spacer installations
- Allows longer wheel studs to pass through
- Correct R14 ball seat for compatible
- Porsche wheels
- Durable black corrosion-resistant finish
- High-strength steel construction
- Suitable for road and track use
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N0201121
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This replacement steel lug nut is commonly used for wheel spacers, wheel stud conversions, and other wheel fitting applications on modern and classic Porsche models.
Fits: Porsche Various models
Quantity Required: Quantity required depends on wheel and hub setup. Typically 5 required per wheel / 20 required per vehicle for many Porsche 5-stud applications. Sold individually - A set of 20 is also available under the kit listing.
This OE Match open ended wheel nut is a replacement wheel fastening nut with an R14 ball seat and gun metal finish. It is designed for use on Porsche wheel stud applications where an open ended wheel nut is required.
The wheel nut secures the road wheel to the wheel hub or stud conversion assembly. The open ended design allows use with extended wheel studs, making it suitable for spacer setups, motorsport-style conversions, and other applications where closed wheel nuts may not provide suitable thread clearance.
Functions
• Replaces open ended wheel nuts
• Secures the wheel to the hub or wheel stud
• R14 ball seat design for suitable Porsche wheel applications
• Open ended style for use with longer wheel studs
• Suitable for wheel spacers and wheel stud conversions
• Gun metal finish for a clean, performance-style appearance
• OE Match replacement for Porsche wheel fastening applications.
Why Replace This Part?
Wheel nuts can become corroded, rounded, cross-threaded, worn, or cosmetically damaged through age, repeated wheel removal, incorrect tools, or track and road use. A damaged wheel nut can make wheel removal difficult and may affect correct wheel clamping. Replacing worn or damaged wheel nuts helps maintain secure wheel fitment and a clean finish.
When to Replace This Part
• Wheel nuts are corroded, rounded, worn, or damaged
• A wheel stud conversion has been fitted
• Wheel spacers or extended studs are being used
• Closed wheel nuts do not provide enough thread clearance
• Wheels are being changed or upgraded
• The gun metal finish is required for visual matching
• Preventative replacement is being carried out during wheel service
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
N0201121
The product you are viewing cross references to these numbers