bushing Genuine Porsche part 90134142104

Wishbone Ball Joint Front
This OE Match front wishbone ball joint is a direct replacement for the original Porsche suspension component fitted to Porsche 911 models produced  and Porsche 914. It connects the front wishbone (control arm) to the wheel carrier, allowing controlled suspension articulation and accurate steering movement.
Sold individually, 2 required per vehicle

Early type with round cut out. Requires round pin. Not included with the ball joint.

Fits:
Porsche 911 08/1969 - 07/1971
Porsche 914 1970 - 1972

Diagram ref no 13

Installed at the outer end of the front lower wishbone/control arm, the ball joint forms a critical pivot point between the suspension arm and wheel hub carrier. It allows controlled articulation during steering and suspension travel while maintaining correct wheel alignment and suspension movement. Proper ball joint operation is essential for steering accuracy, chassis stability, and predictable handling.

This early-style ball joint features the correct configuration for early Porsche suspension systems and is suitable for restoration work, suspension refurbishment, or replacement of worn original components. Certain versions are supplied with lock plate and split pin hardware depending on application.

The front wishbone ball joint connects the lower control arm to the wheel carrier while allowing controlled steering and suspension movement. It supports stable handling, precise steering response, and proper front wheel alignment.

Function
•  Connects front wishbone/control arm to wheel carrier
•  Allows steering and suspension articulation
•  Maintains correct front suspension geometry
•  Supports precise steering response and stable handling
•  Helps reduce suspension play and uneven tyre wear

Ball joints are subjected to constant suspension load, steering movement, and road vibration. Over time, internal wear can create excessive play within the joint, leading to vague steering, suspension knocking noises, unstable handling, and uneven tyre wear. Replacing worn ball joints restores safe suspension operation and factory steering precision.

When to replace
•  Excessive steering play or vague handling
•  Knocking or clunking noises from front suspension
•  Uneven front tyre wear
•  Failed suspension inspection or MOT
•  Visible wear or looseness in suspension joint
•  During front suspension rebuild or restoration

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

90134104904

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Wishbone ball joint front - groove nut. Fits - left and right.



Fits:
Porsche 911 1969-89
Porsche 914 1972-76

Price is for each.

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90134142501

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Wishbone Ball Joint Front, Lock plate.
The OE Match Front Wishbone Ball Joint Lock Plate is a high-quality replacement retaining component designed to securely lock and retain the front wishbone ball joint assembly in its correct position. Although small in size, this precision-engineered locking plate plays a critical role in maintaining the integrity and safety of the front suspension system.  
Sold Each.

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 914 (1970-1976)  

Manufactured to OE specifications for fit, strength and durability, the lock plate is designed to prevent movement or loosening of the ball joint retaining hardware under the constant loads and vibrations experienced during vehicle operation. It is an essential component when replacing suspension parts, carrying out front-end repairs or restoring factory-correct assembly.  

What This Product Does:

• Secures and locks the front wishbone ball joint retaining hardware.
• Prevents loosening caused by vibration and suspension movement.
• Maintains correct ball joint positioning within the suspension assembly.
• Supports proper suspension geometry and alignment.
• Helps ensure safe operation of the steering and suspension systems.
• Contributes to the long-term reliability of front suspension components.

Symptoms Of Wear Or Failure:

• Loose ball joint retaining hardware.
• Unwanted movement within the suspension assembly.
• Knocking or clunking noises from the front suspension.
• Difficulty maintaining correct wheel alignment.
• Increased wear on ball joints and suspension components.
• Visible corrosion, bending or damage to the lock plate.
• Reduced security of suspension fasteners.
• Potential suspension safety concerns if retaining hardware loosens.

Why Replacement Matters:

• Lock plates are designed to provide a secondary level of security for critical suspension fasteners. Over time, corrosion, fatigue, improper installation or damage during servicing can reduce their effectiveness. Reusing worn or distorted locking components may compromise their ability to properly secure suspension hardware.
• A damaged or missing lock plate can allow retaining fasteners to gradually loosen, increasing the risk of suspension component movement and accelerated wear. In severe cases, insufficient retention of critical steering and suspension parts can affect vehicle handling and safety.
• Replacing worn or damaged lock plates helps maintain correct suspension assembly integrity, ensures secure fastening of ball joint components and supports safe, predictable vehicle handling. An OE Match replacement restores factory-style fitment and provides dependable long-term security for the front suspension system.

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90134142600

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Rennline Ball Joint Nut. (OE Ref: 90134142501)
Sold individually.

Fits:
Porsche 911/914 All

These Ball Joint Hub Nuts for your 911 and 914 front ball joints replace lost, stripped or corroded factory units. Featuring OEM threading and aluminium construction these are a direct replacement for the factory part.

Related reference numbers
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S98013P

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Wishbone ball joint with split pin & lock plate, Front.
With half moon cut out for early 911's

Early type with round cut out. Requires round pin. Not included with the ball joint.

Fits:
Porsche 911 1969-71
Porsche 914

Price is for each.

Diagram ref no 13, 15, 16 and 17

Related reference numbers
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90134104904

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Front Auxiliary support frame bush (SET OF 4) Porsche 911 and 912  1965-67

Fits:
Porsche 911 2.0L 01/1963 - 07/1967

Diagram ref no 8

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90134142102

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Front auxiliary support frame rubber bush.

Fits:
Porsche 911 / 912 1965-67

Diagram ref no 8

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90134142102

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Front Auxiliary support frame bush.
Replacement rubber mount for the front auxiliary support frame that supports the front suspension and steering components on early Porsche 911 and 912 models. This bushing cushions and secures the support frame to the chassis or body mounts, helping to isolate road vibration, maintain alignment, and ensure stable suspension geometry.
Sold each, 2 required per vehicle.

Fits:
Porsche 911 2.0L 01/1963 - 07/1967

Diagram ref no 8

This bushing installs directly in place of the factory part without modification.

This replacement bushing is especially useful during restoration, front-end maintenance, or when the original mount exhibits signs of wear - ensuring safe, predictable handling and preserving chassis integrity.

Worn or degraded support-frame bushings can lead to excessive play under load, compromising suspension geometry and causing unstable handling, uneven tyre wear, or unpredictable steering feedback. In addition, degraded rubber can transfer vibration and noise into the cabin, reducing comfort and potentially accelerating wear on other suspension or chassis components. Replacing with a correct-spec  bushing restores firm, damped support - preserving handling precision, ride comfort, and the structural integrity of the front sub-frame.

When to replace. Consider replacing when:
•  The original bushings are cracked, flattened, perished or visibly damaged
•  There is clunking, looseness or unstable handling under braking, cornering, or uneven roads
•  You are performing a front suspension, frame or chassis overhaul
•  You are undertaking a restoration or recommissioning of a classic 911/912

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90134142104

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90134142104

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