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- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
Motorsport / Racing version. This monoball is perfect for all track oriented race enthusiasts. This monoball is part of rear wheel hub / rear wheel carrier assembly – OE ref no. 99133111103 / -104 / -105 and 99133111203 / -204 / -205.
SOLD individually, 2pcs required per car.
Fits:
Porsche 991 2012 >>
Porsche 991 Turbo 2012 >>
Fits number 1 on the diagram.
Part highlighted in green on the diagram.
The PR52048P is a motorsport-grade concentric monoball unit designed for the rear wheel carrier (hub) control arm mount on Porsche 991 vehicles. Built with precision engineering and performance materials in Europe, it replaces the conventional rubber suspension bush with a hardened spherical bearing for maximum control and responsiveness.
Installed at the rear wheel carrier to control arm mount, the monoball reduces compliance that is inherent in traditional rubber bushes. By replacing rubber with a spherical bearing, it ensures the hub remains precisely located relative to suspension loads - even under high lateral and longitudinal forces. This significantly improves handling consistency and repeatability during aggressive driving.
Rubber suspension bushes, while comfortable for everyday driving, can flex and deform when subjected to high cornering forces or track load. This compliance can lead to:
• Reduced suspension precision
• Vague handling at the limit
• Unwanted changes in camber and toe settings under load.
This motorsport monoball replaces that compliant interface with a hardened spherical bearing, virtually eliminating bush flex and delivering a more direct, predictable response - ideal for track days, competition use, and drivers who demand precise rear-end control.
When to replace
Consider this upgrade or replacement if:
• You are building a track-focused suspension setup
• You experience unwanted rear wheel carrier movement at high loads
• You want to reduce compliance and improve mechanical feedback
• Rubber bushes are worn, cracked, or allowing excessive play
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PR52048P
The product you are viewing cross references to these numbers
- 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
Wheel Hub Studs 72mm.
The OE MATCH Wheel Hub Studs 72mm are OE-matching wheel fastening components designed to securely mount the wheel to the vehicle hub. Measuring 72mm in length, these high-strength wheel studs provide the threaded connection between the hub and wheel nuts, ensuring safe wheel retention under all driving conditions. They are particularly suitable for standard applications as well as setups using wheel spacers where additional thread engagement may be required.
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 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
Manufactured to OE specifications, these wheel hub studs are engineered for precise fitment, correct thread pitch, and exceptional durability. Constructed from high-strength steel, they are designed to withstand the significant loads generated during acceleration, braking, cornering, and high-performance driving.
What This Product Does:
- Provides a secure threaded mounting point for wheel nuts
- Secures the wheel firmly to the hub assembly
- Maintains correct wheel positioning and alignment
- Supports safe braking, handling, and vehicle stability
- Allows proper wheel installation and torque application
- Provides reliable fastening performance under demanding driving conditions
Symptoms Of Wear Or Failure:
- Stripped or damaged threads
- Corrosion affecting stud strength and thread engagement
- Bent or distorted wheel studs
- Difficulty tightening wheel nuts correctly
- Wheel nuts loosening repeatedly
- Cracks or fatigue damage from repeated stress
- Reduced thread engagement due to wear or damage
Why Replacement Matters:
- Restores safe and secure wheel fastening
- Ensures proper wheel nut engagement and torque retention
- Maintains correct wheel alignment and seating
- Prevents wheel movement or loosening during driving
- Supports safe braking, handling, and suspension performance
- Reduces the risk of wheel fastening failures
- Provides OE-style fitment and long-term reliability
- Helps protect wheels, hubs, and braking components from fastening-related damage
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99334167170
The product you are viewing cross references to these numbers
- 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 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
Fits:
Porsche 911 1974-80
Porsche 911 1981-89 (Not for Turbo or Turbo-Look M491)
Porsche 911 (930) TURBO 1975-80
Porsche 928 1978-91
Click 'Zoom in' for large parts diagram.
Diagram ref no 33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91134168400
The product you are viewing cross references to these numbers
for Porsche Boxster / Cayman / 911 / Panamera / Taycan
Sold each.
Fits:
Porsche 911 (993 / 996 / 997 / 991 / 992)
Porsche Boxster (986 / 987 / 981)
Porsche Cayman (987 / 981 / 718)
Porsche Panamera (970)
Porsche Taycan
Alignment eccentric washer, also referred to as a cam adjust arm or control arm adjust cam, is used in the rear suspension of certain Porsche 911, Boxster, Cayman and Panamera models.
Position on Vehicle: Rear suspension — at the rear control arm or track rod mounting point, typically used to adjust alignment of the wheel carrier, track bar or control arm.
Applications: Ideal for when original eccentric bolts or washers are worn, alignment cannot be set correctly, or when replacing control arms/track rods and correct alignment geometry is required.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAF007648
The product you are viewing cross references to these numbers
- 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 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
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
- Porsche 914 (1970-1976)
- Porsche 912E 4CYL 1976
Wheel Hub Studs
OE Match replacement press-in wheel hub studs. Designed to
replace damaged, worn or corroded original wheel studs, these components
provide the threaded mounting points used to secure the road wheels to the
vehicle's hubs.
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 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 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
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
- Porsche 914 (1970-1976)
- Porsche 912E 4CYL 1976
Manufactured in an original-style press-fit design, each stud features a knurled section that locates securely within the wheel hub, helping prevent rotation when the wheel nuts are tightened or removed.
Suitable for routine wheel hub maintenance, suspension repairs and classic Porsche restoration projects.
Technical Specifications
Press-in wheel stud design Knurled diameter (RD): 14.6mm Head height (A): 5.0mm Knurled section height (B): 9.0mm Head diameter (D1): 20mm Replacement wheel mounting componentWhat Do Wheel Hub Studs Do?
Wheel hub studs are essential components of the vehicle's wheel mounting system.
Each stud is pressed into the wheel hub and provides a threaded mounting point for the wheel nut. When correctly tightened, the wheel nuts clamp the wheel securely against the hub.
The knurled section of the stud prevents it from turning within the hub during wheel installation and removal.
Maintaining wheel studs in good condition is essential for safe wheel retention and correct wheel mounting.
Why Do Wheel Hub Studs Fail?
Wheel hub studs are subjected to considerable loads during driving, braking and cornering. Over time, they can become damaged or weakened.
Common causes of failure include:
Damaged or stripped threads Cross-threading during wheel nut installation Excessive tightening torque Corrosion and rust Repeated wheel removal and installation Incorrect wheel nuts Damage caused by impact or improper installation Incorrect stud length when fitting wheel spacers Wear or damage to the knurled mounting sectionA damaged wheel stud can prevent the wheel nut from tightening correctly, potentially compromising wheel security.
When Should Wheel Hub Studs Be Replaced?
Wheel studs should be replaced whenever damage, excessive wear or deterioration is identified.
Typical signs include:
Stripped or flattened threads Wheel nuts that do not tighten smoothly Bent or visibly damaged studs Excessive corrosion Loose studs within the wheel hub Damaged knurled sections Studs that rotate when tightening wheel nuts Broken or missing wheel studsReplacement is also recommended if a stud has been damaged during wheel bearing, brake or suspension repairs.
Never reuse a wheel stud that cannot securely retain the wheel nut.
Checks During Replacement
When replacing wheel hub studs, inspect the complete wheel mounting assembly.
Check the wheel hub for damage around the stud mounting holes and ensure the replacement stud is the correct diameter and length.
Inspect the wheel nuts for damaged threads and replace any that show signs of wear.
If wheel spacers are fitted, confirm that the studs provide sufficient thread engagement and are suitable for the spacer thickness.
Wheel studs must be installed using the correct procedure and suitable equipment. Wheel nuts should always be tightened to the vehicle manufacturer's specified torque.
Porsche Wheel Hub Studs & Wheel Mounting Components
Wheel hub studs are essential safety components within the Porsche wheel mounting system. Designed to secure the road wheels to the hubs, they provide the threaded mounting points required for correct wheel nut installation and wheel retention.
Over time, original wheel studs can become damaged through corrosion, repeated wheel removal, incorrect tightening procedures or general wear. Damaged threads and worn mounting sections can prevent wheel nuts from tightening securely, making replacement essential.
Their knurled press-fit construction is designed to locate securely within the wheel hub, while the threaded section provides the mounting point for the wheel nut.
Suitable for routine maintenance, brake and suspension repairs, wheel hub refurbishment and complete classic Porsche restoration projects, these replacement studs help maintain the integrity of the wheel mounting system.
Design911 supplies Porsche wheel hub studs, wheel nuts, wheel bolts, wheel spacers, wheel bearings, wheel hubs and associated suspension components for maintaining and restoring classic and modern Porsche vehicles.
Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1994-98
Porsche 944 1982-91
Porsche 968 1992-95
Porsche 928 1978-95
Porsche 924 1977-88
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
993341671
The product you are viewing cross references to these numbers