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Porsche > 964 (911) (1989-1994) > Engine Cooling >

Oil Tank

Oil Tank

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Engine oil collection tank. Porsche 964 Turbo - 93010700108
3
Engine oil collection tank. Porsche 964 Turbo
93010700108/1
Product Information
Product Information

Engine Oil Collection Tank

Restore the reliability and efficiency of your Porsche's dry sump lubrication system with this OE Match Engine Oil Collection Tank. Manufactured to original equipment specifications, this premium-quality replacement oil tank provides the correct fit, capacity and oil flow characteristics required to maintain consistent lubrication and engine protection.

Fits:

  • Porsche 964 (911) TURBO 3.3L 1991-93       

Diagram Ref No 21

Unlike conventional wet sump engines, the legendary air-cooled Porsche flat-six uses a sophisticated dry sump lubrication system, where engine oil is stored in a separate external oil collection tank. This design allows for superior oil control during high-performance driving, improved engine cooling and a constant oil supply under hard acceleration, braking and cornering.

Whether you're restoring a 964 Turbo, replacing a corroded original tank or carrying out an engine rebuild, this OE Match oil collection tank is engineered to restore factory performance and reliability.

What Does the Engine Oil Collection Tank Do?

The engine oil collection tank is one of the most important components of Porsche's dry sump lubrication system. It stores the engine's oil supply and works with the scavenge and pressure pumps to ensure a continuous flow of clean oil throughout the engine.

Its functions include:

  • Storing the engine's oil supply.
  • Maintaining a constant supply of oil to the lubrication system.
  • Separating air from the returning engine oil.
  • Assisting with engine oil cooling.
  • Preventing oil starvation during hard cornering and acceleration.
  • Supporting stable oil pressure under all driving conditions.

The large external oil reservoir is a defining feature of Porsche's air-cooled engine design and plays a vital role in engine longevity.

Why Does the Oil Collection Tank Need Replacing?

Over time, the oil tank can become damaged or deteriorate due to:

  • Internal corrosion caused by moisture contamination.
  • External rust from road debris, salt and age.
  • Impact damage.
  • Cracked seams or weld failures.
  • Blocked internal baffles or oil return passages.
  • Previous accident damage.
  • Oil leaks around fittings or mounting points.

Replacing a damaged oil tank helps maintain proper lubrication while preventing costly engine damage caused by oil loss or contamination.

Symptoms of a Failing Oil Collection Tank

Common warning signs include:

  • Engine oil leaks.
  • Visible corrosion or rust.
  • Oil seepage around welded seams.
  • Oil contamination.
  • Difficulty maintaining the correct oil level.
  • Damaged or dented oil tank.
  • Oil odours after driving.

If the tank shows signs of corrosion or leakage, replacement is recommended before more serious lubrication issues develop.

When Should the Oil Collection Tank Be Replaced?

Replacement is recommended when:

  • Oil leaks are present.
  • Corrosion is visible.
  • The tank has been dented or damaged.
  • Carrying out a complete engine restoration.
  • Rebuilding the lubrication system.
  • Replacing heavily corroded oil pipes and hoses.
  • Restoring originality on a classic Porsche.

Replacing ageing lubrication components helps ensure long-term engine protection and dependable oil pressure.

Why Choose an OE Match Engine Oil Collection Tank?

Our OE Match oil tank is manufactured to closely replicate the original Porsche component.

Benefits include:

  • OE-quality fit and finish.
  • Correct internal capacity and oil flow characteristics.
  • Precision-manufactured steel construction.
  • Corrosion-resistant protective coating.
  • Compatible with factory oil pipes and fittings.
  • Restores reliable lubrication performance.
  • Ideal for restoration and engine rebuild projects.       



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93010700108
93010700108

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Engine oil collection tank. Porsche 964 Turbo 3.6L M64.50 - 96410700120
4
Engine oil collection tank. Porsche 964 Turbo 3.6L M64.50
Special Order item
96410700120
Product Information
Product Information
Engine oil collection tank.

porsche

Fits:
Porsche 964 Turbo 3.6L M64.50

Click 'Zoom in' for large parts diagram.
Diagram Ref No 21

Related reference numbers
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96410700120
96410700120

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Engine oil collection tank. Porsche 964 Turbo 3.6L M64.50 - 96410700120 - COL11.1.112, COL111112
4
Engine oil collection tank. Porsche 964 Turbo 3.6L M64.50
96410700120/1
Product Information
Product Information
Engine oil collection tank.

Fits:
Porsche 964 Turbo 3.6L M64.50

Diagram Ref No 21

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96410700120
96410700120

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Oil filler cap and o-ring. Porsche 911 / 924S / 928 / 944 / 968 / 964 - 94410709101, 94410709100, 94410709101, 94410709104, 94410719102
3
Oil filler cap and o-ring. Porsche 911 / 924S / 928 / 944 / 968 / 964
Special Order item
94410709101
Product Information
Product Information
Oil Filler Cap and O-ring

porsche

Fits:
Porsche 911 1978-89
Porsche 964 1989-94
Porsche 968 1992-95
Porsche 924S 1986-88
Porsche 944 2.7L 1989
Porsche 944 S2 3.0L 1989-91
Porsche 944 2.5L Turbo 1986-91
Porsche 944 2.5L Turbo S 1987-88
Porsche 928 S4 / GT / GTS 1987-95

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

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94410709101
94410709101
94410709100
94410709101
94410709104
94410719102

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Oil Filler Cap Seal. Porsche 911 / 964 / 924S / 928 / 944 / 968 - 99970184640, 99970184641 - PDOE4
2
Oil Filler Cap Seal. Porsche 911 / 964 / 924S / 928 / 944 / 968
99970184641/1
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Oil Filler Cap Seal 

High-quality replacement oil filler cap seal designed for a wide range of Porsche models.

This gasket fits within the oil filler cap, ensuring a tight and secure seal to prevent oil leaks and protect the engine from contamination. It is an essential component for maintaining proper engine sealing and cleanliness.

Fits:

  • Porsche 911 1984-1986 3.2L
  • Porsche 911 1987-1989 3.2L G50
  • Porsche 911 1978-1989 3.3L Turbo (930)
  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) RS 3.8L 1991-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93
  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.7L 8V 1988-89
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944S2 3.0L 16V 1989-91
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 944 Turbo 2.5L 8V 1989-91
  • Porsche 944 Turbo S 2.5L 8V 1988
  • Porsche 968 3.0L 1992-94
  • Porsche 968 Sport 3.0L 1994-95
  • Porsche 968 CS 3.0L 1993-95
  • Porsche 968 Turbo S 3.0L 1993-94
  • Porsche 928S4 5.0L 1987-92
  • Porsche 928GT 5.0L 1989-91
  • Porsche 928GTS 5.4L 1992-95

Diagram ref no 12

Manufactured to OEM specifications, this seal provides precise fitment and reliable long-term performance—ideal for routine maintenance or resolving oil seepage issues.

Key Features

• Direct replacement oil filler cap seal
• Suitable for multiple Porsche models
• Ensures secure sealing of oil filler cap
• OEM-style fit and performance
• Durable material resistant to heat and oil
• Ideal for maintenance and leak prevention

Function and Purpose

This seal ensures a proper closure of the oil filler cap.

It helps to:

• Prevent engine oil leaks
• Maintain engine cleanliness
• Protect against dirt and contamination
• Support consistent engine performance

Why Replace Your Oil Filler Cap Seal

Over time, seals can degrade due to heat and oil exposure.

Common issues include:

• Oil seepage around the filler cap
• Hardened or cracked seal material
• Reduced sealing effectiveness
• Increased risk of contamination

Replacing the seal restores proper engine sealing and prevents leaks.



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

99970184641
99970184640
99970184641

The product you are viewing cross references to these numbers
Oil filler cap. Porsche 911 / 924S / 928 / 944 / 968 / 964 - 94410709101, 94410709100, 94410709101, 94410709104, 94410719102 - 61304, 1613600100
3
Oil filler cap. Porsche 911 / 924S / 928 / 944 / 968 / 964
94410709101/1
Product Information
Product Information
Oil Filler Cap.

oematch

Fits:

Porsche 911 SC 1974-83 SPORTMATIC ONLY
Porsche 911 Turbo (3.3L) 09/1977-07/1989
Porsche 964 1989-94
Porsche 968 1992-95
Porsche 924S 1986-88
Porsche 944 2.7L 1989
Porsche 944 S2 3.0L 1989-91
Porsche 944 2.5L Turbo 1986-91
Porsche 944 2.5L Turbo S 1987-88
Porsche 928 S4 / GT / GTS 1987-95



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

94410709101
94410709101
94410709100
94410709101
94410709104
94410719102

The product you are viewing cross references to these numbers
Oil tank cap gasket. Porsche 911 / 964 / 924S / 928 / 944 / 968 - 99970184640
2
Oil tank cap gasket. Porsche 911 / 964 / 924S / 928 / 944 / 968
Special Order item
99970184641
Product Information
Product Information
Oil tank cap gasket.

Fits:
Porsche 911 1984 - 1989
Porsche 964 1989 - 1994
Porsche 924S 1986 - 1988
Porsche 928 1987 - 1995
Porsche 944 1985 - 1991
Porsche 968 1992 - 1995

Diagram ref no 12

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

99970184641
99970184640

The product you are viewing cross references to these numbers
DISPLAYING 1 to 7 (of 7 products)
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About Oil Tank

Engine Oil Tanks – Reliable Lubrication and Temperature Control for Porsche Engines

Engine oil tanks are a vital component in Porsche’s high-performance lubrication systems, especially in models equipped with dry-sump or performance-oriented engines. These tanks store, circulate, and cool engine oil, ensuring the correct oil pressure and temperature are maintained under all driving conditions - from everyday use to track performance.

At Design911, we supply a wide range of genuine and high-quality engine oil tanks for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each tank is designed to match the factory’s engineering precision, providing exceptional oil flow, pressure control, and durability to keep your Porsche performing at its best.

What Do Engine Oil Tanks Do?

The engine oil tank forms the heart of your Porsche’s lubrication system, performing several key roles:

  • Stores and circulates engine oil to maintain a continuous supply under all conditions.
  • Separates air and oil to prevent foaming and maintain oil pressure.
  • Assists in temperature regulation, allowing excess heat to dissipate efficiently.
  • Ensures optimal lubrication for engine components, reducing friction and wear.

In Porsche’s dry-sump systems, the oil tank is particularly important — allowing the engine to sit lower for better handling while ensuring consistent oil delivery even under high G-forces.

Why Do Engine Oil Tanks Fail?

While designed for long-term reliability, engine oil tanks can deteriorate or fail over time due to mechanical stress, corrosion, or contamination. Common causes include:

  • Cracks or leaks from vibration or impact damage.
  • Corrosion caused by moisture, condensation, or old oil residue.
  • Blocked breather systems leading to pressure imbalance.
  • Internal contamination from sludge or metal debris.
  • Deteriorated seals or fittings causing oil leaks or pressure loss.

Signs of failure may include visible oil leaks, fluctuating oil pressure readings, or an oil smell around the engine bay.

Why Replace a Faulty Engine Oil Tank?

A damaged or leaking oil tank can cause oil loss, low pressure, or poor cooling — all of which risk severe engine damage. Replacing a faulty tank ensures consistent oil supply, stable pressure, and optimal engine protection.

Benefits of replacement include:

  • Restored oil circulation and pressure stability.
  • Prevention of leaks and oil starvation. 
  • Improved lubrication and temperature management.
  • Manufacturer-quality materials for long-lasting reliability.

All tanks in this range are built to meet or exceed original engineering standards, using high-grade alloys or reinforced composites to deliver durability, corrosion resistance, and a precise factory fit.

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