do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
- 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
- Rubber Seals
- Seats & Seat Belts
- Service Parts
- Special Offer Parts
- Steering Parts
- Suspension & Axle
- Suspension Upgrades
- Tyres
- Wheel Accessories
- Wheels
Fuel Lines & Breather Hoses
Fits:
Porsche 911 (1974-1983)
Porsche 930 Turbo (1975-1977)
Click 'Zoom in' for large parts diagram.
Diagram ref no 12
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91120117102
The product you are viewing cross references to these numbers
- 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)
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 911 SC 1980-83
Click 'Zoom in' for large parts diagram.
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135608702
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 911 SC 1980-83
Click 'Zoom in' for large parts diagram.
Diagram ref no 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135608902
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Shop Securely
12 Month Warranty
Worldwide Delivery
Sold each - 3 required per car
Fits:
Porsche 911 2.7ltr / 3.0ltr - 1974 to 1980
Diagram ref no 50
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111009313
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Shop Securely
12 Month Warranty
Worldwide Delivery
Sold each - 3 required per car
Fits:
Porsche 911 2.7ltr / 3.0ltr - 1974 to 1980
Diagram ref no 50
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111009313
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Shop Securely
12 Month Warranty
Worldwide Delivery
Sold each - 3 required per car
Fits:
Porsche 911 2.7ltr / 3.0ltr - 1974 to 1980
Diagram ref no 50
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111009314
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Shop Securely
12 Month Warranty
Worldwide Delivery
Sold each - 3 required per car
Fits:
Porsche 911 2.7ltr / 3.0ltr - 1974 to 1980
Diagram ref no 50
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111009314
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 911 SC 1981-83
Click 'Zoom in' for large parts diagram.
Diagram ref no 51
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93011049402
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Shop Securely
12 Month Warranty
Worldwide Delivery
Fuel Line – Mixture Control to Warm-Up Regulator
High-quality replacement fuel line designed for Porsche 911 SC 1978-80 models equipped with Bosch K-Jetronic fuel injection systems.
This line connects the mixture control unit (fuel distributor) to the warm-up regulator (WUR), playing a critical role in regulating control pressure within the fuel system. This pressure directly influences fuel mixture during cold starts and warm-up phases, making this line essential for proper engine behaviour and drivability.
Fits:
- Porsche 911 1978-1980 3.0L / SC
Diagram ref no 51
Manufactured from a high-quality polyamide tube, this fuel line features reinforced polyamide fibres and an additional protective outer sheath, ensuring exceptional durability, pressure resistance, and long-term reliability in demanding engine bay conditions.
Built to OEM specifications, it offers precise fitment and is ideal for maintenance, repair, or full CIS system restoration.
Key Features
• Direct replacement fuel line (mixture control to WUR)
• Suitable for Porsche 911 SC
• Manufactured from high-quality reinforced polyamide
• Polyamide fibre reinforcement for strength
• Additional protective outer sheath
• Designed for precise control pressure delivery
• OEM-style fit and performance
Part of a Complete K-Jetronic Fuel & Control Pressure System
This line operates within the K-Jetronic control pressure circuit, which includes:
• Fuel distributor / mixture control unit
• Warm-up regulator (WUR)
• Fuel pressure lines
• Fuel accumulator
• Injector lines and injectors
Together, these components regulate fuel pressure and mixture, particularly during cold starts and engine warm-up.
Why This Line is Critical
The warm-up regulator relies on accurate pressure signals.
This hose helps to:
• Deliver control pressure from the fuel distributor
• Regulate air-fuel mixture during engine warm-up
• Ensure smooth cold starting and idle stability
• Maintain consistent engine performance
Why Replace K-Jetronic Control Pressure Lines
Over time, original lines can degrade or lose integrity.
Common issues include:
• Cracking or ageing of original materials
• Internal restriction affecting pressure regulation
• Fuel leaks under pressure
• Poor cold start performance or unstable idle
Replacing the line restores correct control pressure behaviour and system reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93011050201
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
Shop Securely
12 Month Warranty
Worldwide Delivery
Fuel Line – Mixture Control to Warm-Up Regulator
High-quality replacement fuel line designed for Porsche 911 SC 1978-80 models equipped with Bosch K-Jetronic fuel injection systems.
This line connects the mixture control unit (fuel distributor) to the warm-up regulator (WUR), playing a critical role in regulating control pressure within the fuel system. This pressure directly influences fuel mixture during cold starts and warm-up phases, making this line essential for proper engine behaviour and drivability.
Fits:
- Porsche 911 1978-1980 3.0L / SC
Diagram ref no 51
Manufactured from a high-quality polyamide tube, this fuel line features reinforced polyamide fibres and an additional protective outer sheath, ensuring exceptional durability, pressure resistance, and long-term reliability in demanding engine bay conditions.
Built to OEM specifications, it offers precise fitment and is ideal for maintenance, repair, or full CIS system restoration.
Key Features
• Direct replacement fuel line (mixture control to WUR)
• Suitable for Porsche 911 SC
• Manufactured from high-quality reinforced polyamide
• Polyamide fibre reinforcement for strength
• Additional protective outer sheath
• Designed for precise control pressure delivery
• OEM-style fit and performance
Part of a Complete K-Jetronic Fuel & Control Pressure System
This line operates within the K-Jetronic control pressure circuit, which includes:
• Fuel distributor / mixture control unit
• Warm-up regulator (WUR)
• Fuel pressure lines
• Fuel accumulator
• Injector lines and injectors
Together, these components regulate fuel pressure and mixture, particularly during cold starts and engine warm-up.
Why This Line is Critical
The warm-up regulator relies on accurate pressure signals.
This hose helps to:
• Deliver control pressure from the fuel distributor
• Regulate air-fuel mixture during engine warm-up
• Ensure smooth cold starting and idle stability
• Maintain consistent engine performance
Why Replace K-Jetronic Control Pressure Lines
Over time, original lines can degrade or lose integrity.
Common issues include:
• Cracking or ageing of original materials
• Internal restriction affecting pressure regulation
• Fuel leaks under pressure
• Poor cold start performance or unstable idle
Replacing the line restores correct control pressure behaviour and system reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93011050201
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
Shop Securely
12 Month Warranty
Worldwide Delivery
This fuel line assembly with integrated warp-up valve connects from the fuel system to the mixer or injection control unit, helping regulate fuel flow during warm-up or transient conditions. It ensures proper fuel delivery, mixture balancing, and smooth engine response, particularly during cold start and transitional throttle operation.
Fits:
Porsche 911 SC 3.0L 1978 - 1980
Diagram ref no 61
Aged or cracked lines can leak fuel, creating serious risks and causing mixture imbalances, rough idle, or hesitation during warm-up. An OE-Match replacement restores proper fuel delivery, ensures smooth cold starts, and maintains stable engine performance. Built to resist heat, vibration, and pressure, it provides lasting reliability and peace of mind by preventing breakdowns and protecting your Porsche from costly damage.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93011051300
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 911 1981-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 17
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135609103
The product you are viewing cross references to these numbers
- 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 1978-1989 3.3L Turbo (930)
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 911 SC 3.0L (930.10) 1981-83
Click 'Zoom in' for large parts diagram.
Diagram ref no 62
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93011049800
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
Shop Securely
12 Month Warranty
Worldwide Delivery
For Lines with Banjo Connections
with bolts
Fits:
Porsche 911 E/S 2.2-2.4 08/68-07/73
Porsche 911 Carrera 2.7 08/73-07/74
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90135604900
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
Shop Securely
12 Month Warranty
Worldwide Delivery
8mm pipe / 12mm banjo
Fits:
Porsche 911 1969-75
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90135604900
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
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 911 / 911S 1975-77
Porsche 911 1982-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 44
- 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
Shop Securely
12 Month Warranty
Worldwide Delivery
Fuel Lines & Breather Hoses – Reliable Fuel Flow and Ventilation for Porsche Engines
Fuel lines and breather hoses are essential for maintaining safe, consistent, and efficient operation of your Porsche’s fuel and vapour management systems. The fuel lines transport petrol from the tank to the engine, while breather hoses manage pressure and vapour circulation within the fuel system, ensuring smooth refuelling and balanced performance.
At Design911, we supply a complete range of fuel lines, connectors, and breather hoses designed for long-lasting performance, accurate fitment, and durability under high-pressure and high-temperature conditions. Built from fuel-resistant rubber, reinforced composites, or stainless steel, each component ensures secure sealing, corrosion resistance, and reliable fuel delivery for both classic and modern Porsche vehicles.
Whether you’re servicing a classic 911, restoring a transaxle Porsche, or maintaining a performance 992, our manufacturer-quality components guarantee safe, efficient, and leak-free operation.
What Do Fuel Lines and Breather Hoses Do?
Fuel lines and breather hoses play crucial roles in maintaining a balanced and efficient fuel system.
Core Functions:
- Fuel
Lines: Safely transport pressurised fuel from the tank to the
injectors or carburetors.
- Breather
Hoses: Equalise air pressure within the tank and prevent vapour lock
or vacuum formation.
- Vapour
Management: Direct excess vapours back into the intake or carbon
canister for emissions control.
- System Integrity: Maintain proper sealing to avoid leaks, fumes, and performance loss.
A reliable fuel line and breather hose system is essential for optimal fuel delivery, safety, and emissions control.
Why Do Fuel Lines and Breather Hoses Fail?
Over time, these components are exposed to heat, vibration, and corrosive fuels, causing them to deteriorate.
Common Causes of Failure Include:
- Cracking,
hardening, or swelling due to ethanol-based fuels.
- Internal
corrosion or blockage from fuel contamination.
- Age-related
brittleness in rubber or plastic hoses.
- Loose or leaking fittings reducing system pressure.
- External damage from abrasion or heat exposure.
When these parts fail, you may notice fuel odours, leaks,
poor idling, or difficulty refuelling — all signs your Porsche’s fuel
system needs attention.
Why Replace Fuel Lines and Hoses?
Key Benefits:
- Restores proper fuel flow and vapour control.
- Prevents fuel leaks, odours, and emissions faults.
- Improves safety and engine performance.
- Constructed from modern, fuel-resistant materials.
- Direct-fit
installation for Porsche models across all generations.
- Ideal for maintenance, restoration, and upgrades.
Proper maintenance ensures your Porsche’s fuel system remains clean, safe, and efficient — exactly as its performance heritage demands.
Highlights:
- Comprehensive selection of Porsche fuel lines and breather hoses.
- Precision-engineered for accurate fit and durability.
- Resistant to ethanol, heat, and corrosion.
- Supports stable fuel pressure and emissions control.
- Compatible with classic and modern Porsche models.
- Ideal for rebuilds, performance tuning, and preventive maintenance.
-
Fuel Tank & Parts
-
Fuel Filler Cap / Neck / Flap
-
Fuel Gauge / Level Sender
-
Fuel Filter and Fittings
-
Fuel Pumps
-
Pressure Valves / Sensors / Dampers / Regulators
-
Fuel Accumulator
-
Fuel Expansion Tank
-
Carbon Canister
-
Fuel Injectors
-
Fuel Carry Cans
-
Fuel Injection / Collection Rail
-
Fuel Distributor / Metering Head
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed