Steering Racks
Adjustment shim ZF steering box. Porsche 356
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65

Fits:
Porsche 356 / A / B / C
Porsche 356 ZF Steering box shim
Available in
0.10mm
0.12mm
0.15mm
0.30mm
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Diagram ref no 20
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6443471630
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Lock washer ZF steering box. Porsche 356
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65

Fits:
Porsche 356 / A / B / C
Lock washer set for Porsche 356 ZF steering box.
Laser cut and zinc plated.
1 set (pair) is for 1 steering box.
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Diagram ref no 25
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64434714901
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Seal for ZF steering box. Porsche 356
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Measures: 25mm x 36mm x 7mm

Fits:
Porsche 356 A T2 1958–1959
Porsche 356 B T5 / T6 1960–1963
Porsche 356 C 1964–1965/66
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Diagram ref no 4
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90011300450
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Star washer for ZF steering box. Porsche 356
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Fits:
Porsche 356A - 1955 to 1959
Porsche 356B - 1959 to 1963
Porsche 356C - 1963 to 1965
Steering peg star washer for 356 ZF steering box only
Washer for diagram ref no 13
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64434713301
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Steering Box Access Panel LHD Porsche 356 BT6/C/SC
- Porsche 356B 1959-63
- Porsche 356C 1963-65

Fits:
Porsche 356 BT6/C/SC LHD
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Diagram ref no 15
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64450450103
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Steering Box Access Panel LHD Porsche 356 upto BT5
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65

Fits:
Porsche 356 upto BT5
LHD Cars
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Diagram ref no 14
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Steering coupler ground strap. Porsche 356
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65

Fits:
Porsche 356 A / B / C 1956-65
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Diagram ref no 41
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35647104
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Steering coupling. Porsche 356 A / 356 B
- Porsche 356A 1955-59
- Porsche 356B 1959-63

Fits:
Porsche 356A / 356B
This part number has been superseded from previous numbers:
- 64434720100
- 64434720102
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Diagram ref no 30
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64434720103
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Steering coupling. Porsche 356 A / 356 B
- Porsche 356A 1955-59
- Porsche 356B 1959-63

Fits:
Porsche 356 A/B 1.5-1.6 01/55-12/63
Previous OE part number:
- 64434720100
- 64434720102
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Diagram ref no 30
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64434720103
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Steering peg assembly for ZF steering box. Porsche 356
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65

Fits:
Porsche 356 A / B / C
Steering peg assembly for 356 ZF steering box only
Peg includes :
1x 644 347 134 01 Steering Peg 356 ZF Steering box
1x 644 347 135 50 Steering PEG bearing half 356 ZF steering box
1x 644 347 135 00 Steering PEG lock washer 356 ZF steering box
1x 644 347 136 00 Steering PEG nut 356 ZF steering box
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Diagram ref no 13
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Upper ZF steering Box Sea. Porsche 356
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Measures: 16mm x 28mm x 7mm

Fits:
Porsche 356 A T2 1958–1959
Porsche 356 B T5 / T6 1960–1963
Porsche 356 C 1964–1965/66
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Diagram ref no 5
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90011300350
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Porsche Steering Racks | Design911 Precision Steering Assemblies for Control & Performance
The steering rack is the heart of your Porsche’s steering system — translating driver input from the steering wheel into precise directional movement of the wheels. It’s a critical component that ensures responsive handling, stability, and control under all driving conditions. Whether your Porsche uses a hydraulic, manual, or electric power steering setup, maintaining a smooth and accurate rack assembly is essential for both performance and safety.
At Design911, we supply a complete range of steering racks, including hydraulic, electric, and manual systems for both classic and modern models. Each unit is built to high engineering standards, providing exceptional steering feel, precision, and reliability. Perfect for routine servicing, performance restoration, or full rebuilds, our racks ensure your Porsche handles exactly as it was designed to — sharp, smooth, and predictable.
What Do Steering Racks Do?
The steering rack converts the rotational motion of the steering wheel into linear movement, controlling the vehicle’s front wheels for directional accuracy.
Core Functions:
• Transfer steering input into smooth, precise wheel movement.
• Work in conjunction with the power steering system for ease of control.
• Maintain correct wheel alignment and tracking.
• Provide balanced feedback and road feel.
• Ensure stability and steering accuracy at all speeds.
A properly functioning steering rack delivers confidence-inspiring handling — from high-speed motorway cruising to tight cornering on track.
Why Do Steering Racks Fail or Degrade?
Steering racks experience constant pressure, movement, and exposure to heat and contaminants, leading to gradual wear over time.
Common Causes of Failure Include:
• Seal wear leading to hydraulic fluid leaks.
• Corrosion or pitting on internal rack surfaces.
• Play or looseness in steering due to worn bushings or joints.
• Power steering fluid contamination causing internal damage.
• Age-related degradation in gaskets or mounts.
When steering racks begin to fail, symptoms include excessive play, vibration, fluid leaks, uneven steering effort, or knocking noises — all signs that replacement or refurbishment is required.
Why Replace or Upgrade Your Porsche Steering Rack?
Replacing or upgrading your steering rack restores handling precision, stability, and steering feedback. Modern or performance-oriented replacements offer improved durability and response for both road and motorsport use.
Key Benefits:
• Restores sharp, responsive steering performance.
• Eliminates fluid leaks and unwanted play.
• Improves road feel and vehicle stability.
• Available in manual, hydraulic, and electric configurations.
• Fits Porsche 911, 944, 968, Boxster, Cayman, Panamera, and Cayenne models.
• Ideal for restoration, maintenance, or track preparation.
Design911’s Porsche steering racks are precision-engineered to deliver the performance, feedback, and control Porsche owners expect — ensuring reliability on every journey.
Highlights
• Premium Porsche steering racks for all models.
• Precision-engineered for strength, alignment, and feedback.
• Available in hydraulic, manual, and electric variants.
• Restores precise steering control and feel.
• Constructed from corrosion-resistant, high-grade materials.
• Perfect for maintenance, upgrades, or restorations.