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Porsche > 924 (1977-1988) > Engine Rebuild Parts > Fuel System Parts >

Fuel Lines & Breather Hoses

Fuel Lines & Breather Hoses

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High pressure fuel line for injector rail by Rennline. Porsche 924S / 944 / 944 turbo - 94411041302, 94411041303 - M141
5
High pressure fuel line for injector rail by Rennline. Porsche 924S / 944 / 944 turbo
M141
Product Information
Product Information

Rennline High Pressure Fuel Rail 
Upgrade your aging factory fuel system with Rennline’s High Pressure Fuel Rail Line. Designed to outperform and outlast the original, this premium replacement features a modern braided fuel line paired with precision CNC-machined billet aluminum ends, ensuring a secure, leak-free fit. Unlike other aftermarket options, this rail follows the OEM routing to prevent interference with the rocker cover. Perfect for stock replacements or high-performance builds.

Fits:

  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944 2.7L 8V 1988-89
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 944 Turbo 2.5L 8V 1989-91
  • Porsche 944 Turbo S 2.5L 8V 1988>>

Diagram ref no 11 

Key Features:

  • Modern braided fuel hose for enhanced durability and higher pressure tolerance
  • CNC-machined billet ends for an OEM+ look and performance
  • Includes 10mm & 8mm to -6 JIC compression fittings
  • Ideal for both factory replacement and performance applications


What the Product Does
  • Delivers high-pressure fuel reliably to the injectors.
  • Withstands higher fuel system pressures compared to aging OEM parts.
  • Prevents leaks with precision-machined fittings and modern hose construction.
  • Maintains factory routing for a clean, interference-free fit.

Symptoms of a Failing or Worn Fuel Rail

  • Strong fuel smell from the engine bay.
  • Visible leaks or damp spots on the fuel line/rail. 
  • Hard starting or poor performance under load.
  • Fuel pressure loss or misfires.
  • Cracked or brittle factory lines due to age. 

Common Reasons for Failure

  • Aging Materials: Original rubber fuel lines harden and crack over time.
  • Heat Exposure: Constant engine bay heat accelerates degradation.
  • Fuel Pressure Stress: Stock parts may struggle with modern fuel blends and higher pressures.
  • Corrosion: Factory metal ends may rust or weaken.

Why Replace?

  • Prevents dangerous fuel leaks and fire hazards.
  • Restores reliable fuel delivery and performance.
  • Provides a long-term solution with modern materials.
  • Supports both daily driving and high-performance builds.
  • Eliminates common clearance issues with poorly designed aftermarket options.

 Ideal For: Porsche 924S, 944, and 951 owners seeking a safe, reliable upgrade to their fuel delivery system - whether for everyday driving or high-performance tuning.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

M141
94411041302
94411041303

The product you are viewing cross references to these numbers
Hose clip fuel pipe 17x9. Porsche 911 / 964 / 993 / 924 / 944 - PCG51219802, 99951219802
3
Hose clip fuel pipe 17x9. Porsche 911 / 964 / 993 / 924 / 944
Special Order item
PCG51219802
Product Information
Product Information
Hose clip fuel pipe - 17x9mm
Sold each

porsche

Fits:
Porsche 911 - 1974 to 1983
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1997
Porsche 924 - 1980 to 1985
Porsche 944 - 1982 to 1985
Porsche 968 - 1992 to 1995

Click 'Zoom in' for large parts diagram.
Diagram ref no 6


Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PCG51219802
PCG51219802
99951219802

The product you are viewing cross references to these numbers
Screwed socket for fuel line. Porsche 924 76-85 - 063133558, 063133541, 63133541
4
Screwed socket for fuel line. Porsche 924 76-85
Special Order item
063133558
Product Information
Product Information
Screwed socket for fuel line.

porsche

Fits:
Porsche 924 1976-85

Click 'Zoom in' for large parts diagram.
Diagram ref no 12

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

063133558
063133558
063133541
63133541

The product you are viewing cross references to these numbers
DISPLAYING 17 to 19 (of 19 products)
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About Fuel Lines & Breather Hoses

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?

Replacing ageing or damaged lines and hoses ensures safe, efficient fuel flow and helps prevent leaks, vapour loss, and performance issues. Our precision-fit fuel lines and breather hoses are engineered to restore reliability while meeting modern material and performance standards.

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.

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