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Rear Trailing Arm
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Fits:
Porsche 356 A / 356 B / 356 C 1956-63
Click 'Zoom in' for large parts diagram.
Diagram ref no 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9990740060A
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Fits:
Porsche 356 Pre A (1948 - 1955)
Porsche 356 A (1955 - 1959)
Porsche 356 B (1959 - 1963)
Porsche 356 C (1963 - 1965)
Consists of the following parts:
1x hose tie (99951235002)
1x hose tie (99951249900)
Diagram ref no 5 and 6.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG59800200
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Fits:
Porsche 356 (1950 to 1969)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG59800100
The product you are viewing cross references to these numbers
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Fits:
Porsche 356 A/540.1
Porsche 356 B
Porsche 356 C
Click 'Zoom in' for large parts diagram.
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
64433193101
The product you are viewing cross references to these numbers
- Porsche 356C 1963-65
2 required, sold each.

Fits:
Porsche 356 C 1963-65
Click 'Zoom in' for large parts diagram.
Diagram ref no 26
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
69533331100
The product you are viewing cross references to these numbers
- Porsche 356C 1963-65
2 required, sold each.

Fits:
Porsche 356 C 1963-65
Click 'Zoom in' for large parts diagram.
Diagram ref no 26
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
69533331100
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 1975-1977 3.0L Turbo (930)
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Fits:
Porsche 356 B / 356 C
Porsche 911 1965 - 1983
Porsche 911 Turbo 1975 - 1977
Diagram ref no 28.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90003403601
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Fits:
Porsche 356 (1950 to 1969)
Diagram ref no 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG341911
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Restore protection around the rear axle cross tube assembly with this OE Match Rubber Boot. Designed for compatible Porsche applications, this flexible rubber component helps protect the associated axle and suspension area from dirt, moisture, road debris and other contaminants.
Fits:
Porsche 356 (1950 to 1969)
Diagram Ref No 4
The boot acts as a protective barrier around the relevant cross-tube connection or moving component while retaining the flexibility required for normal suspension and axle movement. Keeping this area properly protected helps reduce contamination and deterioration of the components located beneath or around the boot.
What This Product Does:
- Provides a protective covering for the associated rear axle cross tube area.
- Helps prevent dirt and road debris reaching protected components.
- Helps reduce moisture and contamination entering the assembly.
- Provides flexibility to accommodate normal suspension and axle movement.
- Helps protect associated components from premature contamination-related wear.
- Provides a barrier against everyday road grime.
- Helps maintain the condition of the rear axle and suspension assembly.
- Replaces a cracked, split, hardened, perished or missing boot.
- Helps restore a clean and complete appearance during suspension restoration.
- Provides an OE-style replacement for compatible Porsche applications.
Symptoms Of Wear Or Failure:
- Visible cracks in the rubber.
- Splits or tears in the boot.
- Rubber that has become hard or brittle.
- Perishing or surface deterioration.
- The boot no longer fitting securely in position.
- Sections of the protected assembly becoming exposed.
- Dirt or road debris accumulating beneath the boot.
- Moisture or contamination around the protected components.
- Distortion or loss of flexibility.
- Oil or chemical contamination causing the rubber to swell or soften.
- The original boot is completely missing.
- Deterioration discovered during rear suspension or axle servicing.
Why Replacement Matters:
- The rubber boot is designed to isolate vulnerable components from the harsh environment beneath the vehicle. Once the rubber cracks or splits, dirt, water and abrasive road debris can reach areas that would normally remain protected.
- Contamination can accelerate wear and corrosion of surrounding components. Dirt trapped around moving or contacting surfaces can act as an abrasive, while persistent moisture may encourage corrosion on metal parts.
- A deteriorated boot may initially appear to be only a cosmetic issue, but leaving the protected assembly exposed can contribute to more expensive component wear over time. Replacing the boot before significant contamination occurs is generally preferable to repairing damaged axle or suspension components later.
- Rubber deterioration is particularly common on classic vehicles because original components may have been subjected to decades of heating, cooling and environmental exposure. Even a boot that appears intact can become stiff and develop cracks when disturbed during servicing.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG341911
The product you are viewing cross references to these numbers
- Porsche 356C 1963-65

Fits:
Porsche 356 C 1963-65
Click 'Zoom in' for large parts diagram.
Diagram ref no 30
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Related, superseded, cross reference or alternative numbers for comparison.
69533303
The product you are viewing cross references to these numbers
Porsche Rear Trailing Arms | Design911 Suspension Components for Stability, Alignment & Handling Precision
Rear trailing arms are vital components in your Porsche’s suspension system, connecting the rear axle or hub carrier to the chassis. They control the rear wheel’s forward and backward motion while maintaining correct alignment, geometry, and stability during braking, cornering, and acceleration. Properly functioning trailing arms are key to preserving the balance, grip, and ride comfort Porsche is famous for.
At Design911, we supply a complete range of rear trailing arms, bushes, and associated components engineered for precision fitment, strength, and durability. Crafted from high-quality steel or aluminium alloys, our trailing arms provide the perfect combination of rigidity and lightweight performance. Whether for routine servicing, restoration, or track-focused upgrades, our parts restore suspension integrity and improve both comfort and control.
What Do Rear Trailing Arms Do?
Trailing arms form a structural link between the chassis and the rear wheel assembly, ensuring that the wheel remains correctly positioned and aligned through all driving conditions.
Core Functions:
• Control rear wheel movement under acceleration and braking.
• Maintain correct rear axle geometry and wheel alignment.
• Absorb road shocks to improve comfort and stability.
• Enhance traction, grip, and straight-line performance.
• Support suspension articulation and chassis balance.
High-quality rear trailing arms keep your Porsche’s suspension geometry stable — ensuring predictable, precise handling on both road and track.
Why Do Rear Trailing Arms Fail or Degrade?
Trailing arms operate under constant load and movement, making them vulnerable to wear, corrosion, and metal fatigue over time.
Common Causes of Failure Include:
• Worn or cracked bushings leading to excess play.
• Corrosion or rust weakening the arm structure.
• Impact damage from road debris or kerb strikes.
• Metal fatigue from repeated high-load driving.
• Loose or damaged mounting bolts affecting alignment.
When trailing arms fail, symptoms include clunking noises, unstable handling, uneven tyre wear, and poor rear-wheel alignment — making timely replacement essential for performance and safety.
Why Replace or Upgrade Your Porsche Rear Trailing Arms?
Replacing worn or damaged trailing arms restores suspension geometry, stability, and control. Upgraded performance arms enhance chassis stiffness, adjustability, and precision — ideal for spirited driving or motorsport use.
Key Benefits:
• Restores suspension alignment and stability.
• Improves handling precision and cornering balance.
• Eliminates vibration, noise, and excess rear-wheel play.
• Constructed from corrosion-resistant, high-strength materials.
• Fits Porsche 911, 944, 968, Boxster, Cayman, Cayenne, and Macan models.
• Ideal for servicing, performance upgrades, or full restorations.
Design911’s Porsche rear trailing arms deliver exceptional engineering, ensuring your Porsche drives with the strength, precision, and control it was designed for.
Highlights
• Premium Porsche rear trailing arms and mounting
components.
• Precision-engineered for suspension accuracy and strength.
• Restores handling, alignment, and ride comfort.
• Available in standard or performance-grade materials.
• Suitable for both classic and modern Porsche models.
• Perfect for restoration, servicing, or track preparation.