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- Accessories
- Brakes
- Chassis / Bodywork
- Clothing & Gifts
- Electrical & Relays
- Engine Cooling
- Engine Electrical
- Engine Rebuild Parts
- Engine Tuning
- Exhausts
- Exterior Styling / Spoilers
- Gearbox / Transmission
- Heating / Air Conditioning
- Hydraulics
- Incar / Multimedia
- Interior & Accessories
- Lighting
- Mats & Carpets
- Motorsport and Off-Road
- Parts for Other Cars
- Pedal Cluster
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- Service Parts
- Special Offer Parts
- Steering Parts
- Suspension & Axle
- Suspension Upgrades
- Tyres
- Wheel Accessories
- Wheels
Heater cables
Fits:
Porsche 356 50-65
Click 'Zoom in' for large parts diagram.
Diagram ref no 31
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
53906541
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
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 356, 356A
Click 'Zoom in' for large parts diagram.
Diagram ref no 32
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
53906644
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
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 356 (1950-1955)
Porsche 356A (1955-1960)
Porsche 356B (1960-1963)
Porsche 356C (1964-1965)
Diagram ref no 16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
35624408
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
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 356 A/B/C (not Carrera) 1.1L-1.6L 01/1955-12/1965
Click 'Zoom in' for large parts diagram.
Diagram ref no 17
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
69542407100
The product you are viewing cross references to these numbers
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Shop Securely
12 Month Warranty
Worldwide Delivery
Heater Cable
Restore correct operation of the cabin heating
system in your classic Porsche with this OE Match heater cable. Designed as a
direct replacement for the original heater control cable, helping to transfer
movement from the interior heater control to the heater mechanism. A worn,
stretched, seized or damaged cable can make the heater difficult to operate,
prevent the control from moving through its full range or leave the heating
system stuck in one position.
Fits:
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Diagram ref no 17
Manufactured to OE specifications, this replacement cable provides the correct fit, length and operating movement required for a dependable repair while preserving the factory-style function of the original heating controls.
What Does the Heater Cable Do?
The heater cable forms part of the mechanical control system used to regulate the flow of heated air into the cabin.
When the heater control is operated, the cable transfers that movement to the heater mechanism, allowing the driver to open, close or adjust the heating system. The cable must move freely and maintain the correct tension for the control system to work properly.
A correctly functioning cable helps provide:
- Smooth movement of the heater control
- Reliable opening and closing of the heater mechanism
- Accurate adjustment of cabin heat
- Proper control travel
- Consistent operation of the original heating system
Why Replace the Heater Cable?
After decades of use, the original cable can deteriorate through corrosion, repeated movement, contamination or internal wear.
Common problems include:
- Cable stretching
- Frayed inner wire
- Corroded cable sections
- Seized movement
- Bent or damaged ends
- Excessive resistance at the heater control
- Incomplete movement of the heater mechanism
Replacing the damaged cable restores the mechanical connection between the cabin control and the heater system.
Symptoms of a Worn or Failed Heater Cable
A replacement may be required if you
experience:
- A stiff or difficult heater control
- The control moving without operating the heater
- Limited heater control travel
- Heating remaining permanently on
- Heating failing to switch on
- Uneven heater operation
- Excessive play in the control
- A snapped or visibly frayed cable
- The control lever failing to remain in the selected position
The heater valves and related mechanisms should also be inspected, as seized components can place excessive strain on the cable.
Benefits
Installing this OE Match heater cable can help
to:
- Restore correct heater control movement
- Improve cabin heating adjustment
- Replace a stretched or seized original cable
- Reduce stiffness at the control
- Return the heating system to factory-style operation
- Improve reliability during cold-weather driving
- Maintain the originality of the vehicle
- Avoid improvised cable repairs
- Support a high-quality Porsche 356 restoration
Installation Recommendations
Professional installation is recommended, particularly where access to the original cable routing and heater mechanism is restricted.
Before fitting, inspect:
- Heater control lever or knob
- Cable attachment points
- Cable guides and retaining clips
- Heater valves and operating levers
- Cable routing
- Adjacent heating system components
The heater mechanism should move freely before the new cable is connected. Installing a replacement cable onto a seized or excessively stiff mechanism may cause premature wear or failure.
Route the cable in the original position and avoid sharp bends that could increase friction or restrict movement.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
69542407100
The product you are viewing cross references to these numbers
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Shop Securely
12 Month Warranty
Worldwide Delivery
Porsche Heater Cables | Smooth Temperature Control & Reliable Cabin Heating
Heater cables play a key role in your Porsche’s heating and ventilation system, connecting the cabin heater controls to the heat flaps or valves that regulate warm airflow. They allow precise manual adjustment of cabin temperature, ensuring balanced heating distribution and driver comfort.
At Design911, we supply high-quality heater cables engineered to meet or exceed original performance standards. Constructed from durable steel wire with corrosion-resistant coatings and precision fittings, these cables ensure smooth operation, consistent tension, and long-lasting reliability.
Whether you’re restoring a classic air-cooled Porsche or repairing a modern heating system, our heater cables deliver dependable performance and exact fitment for every model.
What Do Heater Cables Do?
Heater cables mechanically link your Porsche’s heater levers or control knobs to the air flaps or valves that regulate cabin temperature.
Core Functions:
- Transmit control input to open or close heater flaps.
- Regulate airflow temperature between warm and cool settings.
- Maintain smooth, precise heater control for driver comfort.
- Enable even air distribution across the cabin.
- Essential for classic and manually-operated Porsche heating systems.
Without properly functioning cables, the heating system cannot respond accurately to adjustments, resulting in weak or inconsistent cabin temperature.
Why Do Heater Cables Fail or Wear Out?
Heater cables operate under constant tension and exposure to temperature extremes, which can cause wear or breakage over time.
Common Causes of Failure Include:
- Cable fraying or snapping from age and corrosion.
- Seized or rusted heater flap mechanisms.
- Kinks or binding in the cable sheath.
- Loss of tension or cable stretch affecting responsiveness.
- Moisture ingress leading to internal rust and stiffness.
When cables fail, the heater controls may feel stiff, unresponsive, or fail to adjust cabin temperature altogether.
Why Replace Your Porsche Heater Cables?
Replacing worn or seized heater cables restores smooth temperature control and prevents further damage to heater controls or flap mechanisms.
Key Benefits:
- Restores precise, responsive heater operation.
- Prevents damage to heater levers or valves.
- Ensures even airflow and comfortable cabin temperature.
- Built from corrosion-resistant materials for durability.
- Compatible with Porsche 911, 912, 914 and other classic models.
- Ideal for restorations, maintenance, and long-term reliability.
Replacing cables in pairs during service ensures balanced movement and consistent temperature regulation.
Highlights
- Precision-engineered Porsche heater cables for smooth operation.
- Long-life materials resistant to corrosion and stretching.
- Direct-fit designs for road and classic Porsche models.
- Restores accurate heating and ventilation control.
- Perfect for climate system repairs and classic restorations.
- Easy to install, adjust, and maintain.
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed