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Porsche > 911 & 912 (1965-1989) > 911 1984-1986 3.2L > Engine Cooling >

Oil System & Pipes

Oil System & Pipes

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S Hose Oil Cooler to Tank. Porsche 911 1974-89 - 91110723300, 1613701700, 91110723301
4
S Hose Oil Cooler to Tank. Porsche 911 1974-89
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91110723300
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Product Information
S Hose Oil Cooler to Tank.

porsche

Fits:
Porsche 911 1974-89

Click 'Zoom in' for large parts diagram.
Diagram Ref No 22.

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91110723300
91110723300
1613701700
91110723301

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S Hose Oil Cooler to Tank. Porsche 911 1974-89 - 91110723300, 91110723301 - ID19862, 1613701700
2
S Hose Oil Cooler to Tank. Porsche 911 1974-89
91110723300/1
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S Hose Oil Cooler To Tank.
The OE Match S Hose Oil Cooler to Tank is a high-quality replacement hose designed to connect the engine oil cooler system to the oil tank in classic Porsche applications. Commonly referred to as the "S Hose" due to its distinctive shape, this component plays a critical role in the dry sump lubrication system by allowing oil to flow efficiently between the oil tank and engine cooling circuit.

Fits:
  • Porsche 911 1978-1983 3.0L / SC
  • Porsche 911 1984-1986 3.2L
  • Porsche 911 1987-1989 3.2L G50 

Diagram Ref No 22 

Manufactured from durable, oil-resistant rubber and engineered to OE specifications, this replacement hose provides reliable sealing, correct fitment and long-lasting performance. It is an essential component for maintaining proper oil circulation and protecting the engine from lubrication-related issues.


What This Product Does:

  • Connects the oil tank to the engine oil cooler system.
  • Allows the transfer of engine oil throughout the dry sump lubrication system.
  • Maintains proper oil circulation and cooling efficiency.
  • Helps regulate engine operating temperatures.
  • Ensures a consistent supply of oil to critical engine components.
  • Supports overall engine lubrication and longevity.

Symptoms Of Wear Or Failure:
  • Oil leaks beneath the vehicle or around hose connections.
  • Cracked, split or perished rubber.
  • Soft, swollen or deteriorated hose material.
  • Oil seepage around the hose body.
  • Low engine oil levels due to leakage.
  • Burning oil smells from oil contacting hot engine components.
  • Reduced oil system efficiency.
  • Visible ageing, hardening or deformation of the hose.

Why Replacement Matters:
  • The S Hose is constantly exposed to hot engine oil, pressure fluctuations, engine vibration and age-related deterioration. Over time, the rubber can harden, crack or weaken, increasing the risk of sudden oil loss. Because this hose carries a significant volume of engine oil, failure can result in rapid oil leakage that may lead to severe engine damage if not addressed immediately.
  • Replacing a worn or ageing S Hose helps maintain proper oil circulation, prevents potentially catastrophic oil leaks and protects vital engine components from lubrication failure. An OE Match replacement restores the integrity of the oil system and helps ensure reliable performance from your Porsche's dry sump engine.



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

91110723300
91110723300
91110723301

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Spacer sleeve 11.8 mm for Porsche 911 84-89 - 91155914500
1
Spacer sleeve 11.8 mm for Porsche 911 84-89
Special Order item
91155914500
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Product Information
Spacer sleeve 11.8 mm for oil line support

porsche

Fits:
Porsche 911 (1984 to 1989)

Click 'Zoom in' for large parts diagram.
Diagram ref no 21

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91155914500
91155914500

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Spacer sleeve 5 mm for Porsche 911 84-89 - 91155914501
1
Spacer sleeve 5 mm for Porsche 911 84-89
Special Order item
91155914501
Product Information
Product Information
Spacer sleeve 5 mm for oil line support.

porsche

Fits:
Porsche 911 (1984 to 1989)

Click 'Zoom in' for large parts diagram.
Diagram ref no 21

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

91155914501
91155914501

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DISPLAYING 49 to 52 (of 52 products)
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About Oil System & Pipes

Engine Cooling Oil System & Pipes – Precision Cooling and Lubrication for Porsche Performance

The engine cooling oil system and pipes play a crucial role in your Porsche’s performance and reliability. These components deliver and regulate oil flow between the engine, oil cooler, and filter, maintaining stable oil temperature and pressure. By keeping the oil cool and circulating efficiently, they help prevent overheating, reduce friction, and ensure smooth engine operation — even under extreme driving conditions.

At Design911, we offer a complete range of genuine and manufacturer-quality engine cooling oil system parts and pipes for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each component is engineered for precision fitment, high heat resistance, and long-lasting durability, ensuring your Porsche performs exactly as its engineers intended.

What Do Engine Cooling Oil System & Pipes Do?

The oil cooling system and its connecting pipes work together to control temperature and maintain lubrication efficiency throughout the engine. Their main functions include:

  • Transporting oil between the engine, oil cooler, and filter housing.
  • Dissipating excess heat from the oil to prevent breakdown under pressure.
  • Maintaining stable oil pressure for consistent lubrication.
  • Supporting overall engine temperature regulation alongside the coolant system.

These parts ensure your Porsche’s engine oil stays at the ideal temperature and viscosity, protecting vital internal components from wear and damage.

Why Do Oil System Pipes and Components Fail?

Even with regular maintenance, oil cooling system components can wear out due to heat, pressure, and age. Common causes of failure include:

  • Corrosion or cracking of metal oil pipes from long-term exposure to heat and oil.
  • Rubber hose degradation from high temperatures or oil contamination.
  • Leaks at connectors or fittings caused by vibration or poor sealing.
  • Blocked or restricted flow from sludge or carbon build-up.
  • Mechanical damage from debris or impact under the vehicle.

Signs of failure can include visible oil leaks, oil pressure warnings, overheating, or the smell of burning oil.

Why Replace Faulty Oil System Parts and Pipes?

A failing oil pipe or cooler line can cause oil loss, overheating, and even catastrophic engine failure if left unchecked. Replacing worn or damaged components ensures your Porsche’s oil circulation and cooling remain efficient and leak-free.

Benefits of replacement include:

  • Restored oil flow and cooling performance.
  • Prevention of leaks, overheating, and engine damage.
  • Improved reliability and efficiency under all conditions.
  • Manufacturer-quality materials for long-term durability.

All parts in this range are built from high-grade metals, reinforced hoses, and corrosion-resistant fittings, designed to meet or exceed factory standards for performance and longevity.

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