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- Porsche 911 1978-1983 3.0L / SC
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Related, superseded, cross reference or alternative numbers for comparison.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
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