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Porsche // 964 (911) (1989-1994) // 964 (911) RS 3.8L 1991-93
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- 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)
Upgrade your front suspension geometry with the De-Cambered Ball Joint Set (FI-18). These offset ball joints are engineered to provide an inbuilt additional 3mm negative camber bias, improving front-end grip and cornering response without the need for major suspension modifications.
Sold As A Set.
x2 Sets Required Per Car.
Fits:
- 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)
What This Product Does:
- Increases Negative Camber “by Default” - Because the stud is offset outward, the wheel gets a small amount of negative camber without requiring changes at the top strut mount. This helps maintain better contact patch under cornering forces.
- Counters Camber Loss Under Load - In cornering, body roll or suspension compression tends to reduce negative camber (i.e. flatten the tire). The de-cambered joint helps offset that loss so the inside tire stays more planted.
- Improves Handling Stability and Turn-In - With more negative camber under load, the front end grips better, reducing understeer and making turn-in sharper.
- Mild Track / Performance Tuning Without Major Mods - Rather than needing to retrofit adjustable camber plates or change strut towers, this joint gives a modest camber “boost” in a bolt-on manner.
- Retains Full Ball Joint Functionality - It still allows articulation (steering, suspension travel) like a normal ball joint — the offset is only in its alignment, not in its motion.
- Knocking or Clunking Noises - A dull knock from the front suspension, particularly over bumps or while turning, often indicates play in the ball joint.
- Uneven or Excessive Tire Wear - Worn joints allow uncontrolled camber and toe changes, wearing the inside or outside edges of the front tires.
- Loose or Wandering Steering - When the ball joint develops play, the steering feels vague or “floaty” — the car no longer holds a consistent line through corners.
- Vibration or Shimmy at Speed - Free play in the joint can cause steering wheel vibration, particularly over rough surfaces.
- Visible Wear or Damage - Torn dust boots, leaking grease, or excessive movement when inspected during service are clear signs the joints need replacing.
- Inconsistent Handling Under Load - The car may feel unstable mid-corner or react unpredictably to bumps due to geometry shifts caused by worn ball joints.
- Restores Safety & Structural Integrity - The ball joint supports the front suspension load. A failure can cause complete loss of steering control.
- Maintains Proper Wheel Alignment - Fresh joints eliminate unwanted camber/toe drift and keep tires correctly aligned under all loads.
- Improves Steering Precision - Tight, new ball joints restore that crisp Porsche steering feel and predictable handling
- Enhances Cornering Grip - The de-cambered design adds built-in negative camber, improving tire contact and front-end grip through corners.
- Prevents Secondary Wear - Worn joints increase stress on tires, control arms, and suspension bushings — leading to expensive downstream repairs.
- Perfect for Performance & Track Use - The offset camber geometry helps maintain optimal contact patches during high lateral loads, reducing understeer and improving lap-to-lap consistency.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134104704
The product you are viewing cross references to these numbers
- 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
Fits - left or right
Fits:
Porsche 964 1990-94
Price is for each.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96434104913
The product you are viewing cross references to these numbers
- 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
Front Lower Wishbone Ball Joint – fits Left or Right hand Side
Sold each - 2 required per car
Restore the precise steering response and confident handling
your Porsche was engineered to deliver with this OE Match Front Lower
Wishbone Ball Joint. Manufactured to OE
specifications, this premium replacement component provides accurate fitment,
exceptional durability and smooth articulation, making it an ideal solution for
suspension restoration, preventative maintenance or repairing worn front suspension
components.
Fits:
- 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
The lower ball joint is a critical pivot point within the front suspension system, connecting the lower wishbone to the wheel carrier while allowing controlled steering and suspension movement. It is subjected to constant loads from braking, cornering, acceleration and uneven road surfaces, making it one of the hardest-working components in the suspension.
As wear develops over time, steering precision and suspension geometry can deteriorate, resulting in poor handling, tyre wear and unwanted suspension noise. Replacing the lower ball joint restores the integrity of the suspension system and helps maintain the driving characteristics expected from a Porsche.
What Does the Lower Wishbone Ball Joint Do?
The lower wishbone ball joint allows the steering and suspension to move together while maintaining accurate wheel control.
Its primary functions include:
- Connecting the lower wishbone to the wheel carrier.
- Allowing smooth steering articulation.
- Supporting suspension movement.
- Maintaining correct wheel geometry.
- Carrying vertical and lateral suspension loads.
- Helping absorb road shocks.
- Contributing to stable braking and cornering performance.
A correctly functioning ball joint is essential for accurate steering, predictable handling and safe suspension operation.
Why Replace the Lower Ball Joint?
Ball joints are wear items that are continually subjected to movement and high mechanical loads.
Common reasons for replacement include:
- Internal bearing wear.
- Split or damaged dust boots.
- Grease contamination.
- Moisture ingress causing corrosion.
- Excessive suspension movement.
- High vehicle mileage.
- Age-related deterioration.
- Damage caused by potholes or kerb impacts.
Replacing worn ball joints restores suspension performance while preventing unnecessary wear to surrounding steering and suspension components.
Symptoms of a Worn Ball Joint
Common warning signs include:
- Knocking or clunking noises from the front suspension.
- Excessive steering play.
- Wandering at speed.
- Uneven tyre wear.
- Vibration through the steering wheel.
- Poor wheel alignment.
- Squeaking during suspension movement.
- Excessive movement detected during inspection.
Ignoring worn ball joints can affect handling, braking stability and overall driving safety.
Benefits
- Restores steering precision.
- Improves suspension stability.
- Maintains correct suspension geometry.
- Reduces suspension noise.
- Helps minimise uneven tyre wear.
- Enhances braking and cornering confidence.
- Long-lasting durability.
- Excellent value alternative to original equipment.
Installation Recommendations
When replacing the lower ball joint, it is recommended to
inspect associated suspension and steering components, including:
- Lower wishbones.
- Suspension bushes.
- Track rod ends.
- Steering rack components.
- Shock absorbers and top mounts.
- Anti-roll bar links and bushes.
- Wheel bearings.
- Suspension mounting hardware.
Once installation is complete, a professional four-wheel alignment should be carried out to restore the correct suspension geometry and maximise tyre life, handling performance and steering accuracy.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96434104913
The product you are viewing cross references to these numbers
- 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
Fits - left or right
High-quality replacement front lower ball joint designed specifically for the Porsche 964 (1989-1994). It connects the lower control arm to the steering knuckle, allowing controlled pivot motion while maintaining alignment and stability. This ball joint is a stock-replacement unit, built to match or exceed the original Porsche specification. Prekom manufactures this component in Europe, overseeing each step of production to ensure consistent quality. It already includes the required lock nut for simple installation.
Fits:
Porsche 964 1990-94
Price is for each.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96434104913
The product you are viewing cross references to these numbers
.jpg?width=197 "Knurled bolt lower wishbone ball joint. Porsche 964 - 96434146502, 96434146503")
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- 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
Sold each - 2 required per car
Fits:
Porsche 964 - 1989 to 1994
Knurled press fit bolt to secure lower ball joint to suspension wishbone
Diagram ref no 17
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96434146503
The product you are viewing cross references to these numbers