Porsche 911 RS A-Arm Ball Joint Set (FI 18). Porsche 911 RS 1974-1989 - 90134104704
90134104704/6
Vehicle Group
- 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)
Information
Porsche 911 RS A-Arm Ball Joint Set (FI 18)
Restore the front suspension precision of your Porsche 911 RS with this replacement ball joint set designed for the FI 18 A-arms. Supplied with the required mounting hardware (hub nut, lock plate, split pin), this set fits the 1974-89 911 RS series and delivers original-spec performance and fitment.
Sold As A Set.
x2 Sets Required Per Car.
Fits:
What This Product Does:
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90134104704
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Restore the front suspension precision of your Porsche 911 RS with this replacement ball joint set designed for the FI 18 A-arms. Supplied with the required mounting hardware (hub nut, lock plate, split pin), this set fits the 1974-89 911 RS series and delivers original-spec performance and fitment.
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:
- The ball joint sits in the lower portion of the front suspension A-arm (wishbone) and provides the pivotal interface between the A-arm and the steering knuckle/hub.
- It allows controlled articulation (up/down movement of A-arm, steering motion) while keeping the hub and suspension geometry correct (camber, toe, caster).
- Because it’s a replacement for the “RS A-arm ball joint”, when worn or loose it can degrade handling, alignment, tire wear, and front-end feel.
- In essence ensures the front suspension remains tight, precise and responsive.
Symptoms Of Wear Or When To Replace:
- Clunking or knocking noises from the front suspension during cornering, over bumps, or when steering — ball joints with internal play can cause these.
- Uneven or excessive tyre wear on the inside or outside of the front tyres — worn ball joints allow geometry to drift under load.
- Loose or vague steering feel, wandering front end or less precise turn-in — again typically linked to suspension joint play.
- Visible rubber boot damage, grease leakage or rust around the ball joint — older 911 RS suspension components may have aged.
- Restores safety & handling precision: On a high-performance classic like the Porsche 911 RS, the front suspension must be tight and accurate — a worn ball joint undermines that.
- Maintains correct geometry: Fresh joints help keep camber, toe and caster stable under load — vital for handling balance and tyre life.
- Prevents further damage: A failing ball joint can lead to increased stress on tyres, A-arms, bearings and may lead to more costly front-end repairs.
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90134104704
90134104704
91134104905
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Price: £175.00
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Code: PAB407689/1
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Length: 108 mm
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Click 'Zoom in' for large parts diagram,
Diagram ref no 7
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Front lower ball joint. Porsche 95B Macan / Macan II
Code: PAB407689
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Click 'Zoom in' for large parts diagram.
Diagram ref no 7
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Code: PAB407689/2
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Lower Front ball joint / Swivel joint
Lower Ball Joint is a direct-fit replacement for the original lower front ball joint used in Porsche Macan 95B / 95B.2 models. This joint (also known as a swivel joint) connects the lower control arm to the steering knuckle, allowing pivoting motion while handling load. It is commonly cross-referenced to 4G0407689C.
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Length: 108 mm
Cone Size: 24.5 mm
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Thread Size: M14x1.5
Outer diameter: 42 mm
Diagram ref no 7
Fitment & Function:
• Where it fits: Lower front suspension, connecting control arm to steering knuckle
• Function: Enables steering articulation; handles vertical, lateral, and longitudinal load transfer while maintaining wheel alignment
The Joint for Porsche 95B Macan and Macan II (product code PAB407689) is a vital suspension component that plays a key role in connecting the steering knuckle to the control arm. This high-quality ball joint ensures smooth movement and stability in the vehicle's suspension system, contributing to responsive handling and improved ride comfort. Engineered for durability and performance, it helps absorb shocks and reduce wear on other suspension parts, making it an essential replacement part for maintaining your Porsche Macan's driving dynamics and safety.
When ball joints wear, internal clearances increase, leading to steering vibration, knocking noise, poor alignment retention, and uneven tire wear.
Replace the joint when you detect:
• Play or looseness in the wheel under load
• Clunking sound when hitting bumps Uneven front tire wear
• During control arm replacement, suspension overhauls, or alignment issues
Using a high-precision OE Match PAB407689 ensures restored steering stability and safety, with re-established tight tolerances and correct suspension geometry.
Related reference numbers
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PAB407689
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Lower Ball Joint is a direct-fit replacement for the original lower front ball joint used in Porsche Macan 95B / 95B.2 models. This joint (also known as a swivel joint) connects the lower control arm to the steering knuckle, allowing pivoting motion while handling load. It is commonly cross-referenced to 4G0407689C.
Fits:
Porsche 95B Macan 2014 - 2018
Porsche Macan II 2019>>
Length: 108 mm
Cone Size: 24.5 mm
Cone Pitch 1:5
Thread Size: M14x1.5
Outer diameter: 42 mm
Diagram ref no 7
Fitment & Function:
• Where it fits: Lower front suspension, connecting control arm to steering knuckle
• Function: Enables steering articulation; handles vertical, lateral, and longitudinal load transfer while maintaining wheel alignment
The Joint for Porsche 95B Macan and Macan II (product code PAB407689) is a vital suspension component that plays a key role in connecting the steering knuckle to the control arm. This high-quality ball joint ensures smooth movement and stability in the vehicle's suspension system, contributing to responsive handling and improved ride comfort. Engineered for durability and performance, it helps absorb shocks and reduce wear on other suspension parts, making it an essential replacement part for maintaining your Porsche Macan's driving dynamics and safety.
When ball joints wear, internal clearances increase, leading to steering vibration, knocking noise, poor alignment retention, and uneven tire wear.
Replace the joint when you detect:
• Play or looseness in the wheel under load
• Clunking sound when hitting bumps Uneven front tire wear
• During control arm replacement, suspension overhauls, or alignment issues
Using a high-precision OE Match PAB407689 ensures restored steering stability and safety, with re-established tight tolerances and correct suspension geometry.
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PAB407689
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£17.95
Now £16.15
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12 Month Warranty
Worldwide Delivery