Oil Pipes & Hoses

Oil hose for thermostat.

Fits:
Porsche 964 1989 - 1994
* For cars with Thermostat Part Number:
   96420704703
   96420704306

Diagram ref no 22

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Related, superseded, cross reference or alternative numbers for comparison.

96420725104

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Oil hose kit.



To Fit:
Porsche 911 (964 Turbo) 1990-1994 3.3L turbo engines

These DO88 hoses are entirely manufactured in high quality silicone for the best possible finish as well as strength and durability. With three to five layers of reinforcement dependent on the inner diameter, these hoses withstand high pressure rates and high temperatures for extended periods of time. The original hoses are manufactured in rubber that often crack and perish with age. This kit is a durable solution that also improves the appearance under the bonnet!

Please refer to the product images for confirmation of position of the hose.

*** The factory pressed hose clamps needs to be cut on these hoses and reuse the original hose connection and the steel pipe. They are installed on the new silicone hoses with regular hose clamps. See large images for more details ***

Hoses included in this kit:
• Oil thermostat hose - Reference: 96420724101, 96420724104, 96420724106
• Oil thermostat hose - Reference: 96420725102, 96420725103
• Oil tank hose - Reference: 96420721700
• Oil tank hose - Reference: 96420713002, 96420713004
• Oil tank hose - Reference: 96420724702
• Oil tank hose - Reference: 96420717700
• Breather hose * - Reference: 93010739703
• Breather hose * - Reference: 93010739703
• Breather hose * - Reference: 93020714502
• Breather hose - Reference: 93020704301
• Breather hose - Reference: 93020731400
• Breather hose - Reference: 93020731600
• Breather hose - Reference: 93020714503
• Oil tank hose - Reference: 93010739402, 99923600750, 00004320495

All OEM part numbers from the vehicle manufacturer are only stated as a reference.

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DO88-KIT158S

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Clamp kit for use with Porsche 964 Turbo Oil Hose Kit #DO88-KIT158S



To Fit:
Porsche 911 (964 Turbo) 1990-1994 3.3 turbo Engines

The kit contains all necessary hose clamps to install the specified hose kit. The included clamps are a high quality standard design type in all stainless steel (W4 class) with a stamped band to minimize impact on hose surface.

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DO88-CLAMPKIT158

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Oil line to Tiptronic oil cooler.



Fits:
Porsche 964 C2 1990-94 Tiptronic

Click 'Zoom in' for large parts diagram.
Diagram ref no 15

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94330707002

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Oil pipe clamp. 29 x 15.



Fits:
Porsche 911 1984-89
Porsche 964 1989-94
Porsche 993 1995-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 10

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99951116202

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Oil Pipe Clamp. Porsche 964 1989-94



Fits:
Porsche 964 1989-94

Click 'Zoom in' for large parts diagram.
Diagram Ref No 27.

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99951235602

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Oil pipe from tank.

Fits:
Porsche 964 1989-94

Diagram Ref No 30

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96420713004

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Oil pipe from tank.

Fits:
Porsche 964 1989-94

Diagram Ref No 30

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96420713004

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Oil pipe from tank. 



Fits:
Porsche 964 1989-94

Diagram Ref No 26.

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96420721700

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Oil pipe from tank.

Fits:
Porsche 964 1989-94

Diagram Ref No 26

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96420721700

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Oil pipe gasket. 



Fits
Porsche 911 (930) TURBO 1975-89
Porsche 964 (965) TURBO 3.6L 1993-94

Click 'Zoom in' for large parts diagram.
Diagram ref no 8

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93010712301

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Oil pipe L bend.



Fits:
Porsche 964 1989-94

Click 'Zoom in' for large parts diagram.
Diagram Ref No 28.

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96420725711

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Oil pipe L bend. Porsche 964 1989-94



Fits:
Porsche 964 1989-94

Click 'Zoom in' for large parts diagram.
Diagram Ref No 28.

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96420725711

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Oil Pipe Oil Filter Housing to Engine Porsche 964 1989-94



Fits:
Porsche 964 TURBO 1989-94 3.3L / 3.6L

Click pictrue for large parts diagram.
Diagram Ref No 54.

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93020726114

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Oil Pipe Oil Filter to Engine.



Fits:
Porsche 964 1989-94 (NOT TURBO ENGINES)

Click 'Zoom in' for large parts diagram.
Diagram Ref No 54.

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96420725216

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Oil Pipe – Oil Filter Housing to Crankcase 

The Porsche 964 Oil Pipe connects the oil filter housing to the engine crankcase and forms an essential part of the Porsche 964 dry-sump lubrication system. This oil line allows filtered engine oil to be transferred efficiently into the crankcase, ensuring critical internal engine components receive the lubrication required for smooth operation, temperature control, and long-term reliability.

Fits:

• 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

Diagram Ref No 54

On the Porsche 964, maintaining proper oil circulation is vital. The dry-sump lubrication system relies on a network of precisely engineered oil pipes to move oil throughout the engine, filtration system, oil tank, and cooling circuit. A damaged, leaking, or corroded oil pipe can compromise oil flow, reduce oil pressure, and potentially expose the engine to severe wear or damage.

Whether you are carrying out preventative maintenance, restoring a classic Porsche 964, or rebuilding an engine, replacing ageing oil system components helps preserve engine performance and reliability.

What Does This Oil Pipe Do?

The oil filter housing to crankcase pipe transfers filtered oil directly into the engine lubrication circuit after it has passed through the oil filter assembly.

Its functions include:

• Delivering filtered oil to the crankcase
• Maintaining continuous lubrication throughout the engine
• Supporting stable oil pressure
• Assisting proper operation of the dry-sump lubrication system
• Helping protect bearings, pistons, camshafts, and other critical components
• Supporting engine cooling through effective oil circulation

Without reliable oil flow through this pipe, engine lubrication efficiency can be significantly affected.

Why Does This Oil Pipe Fail?

The oil pipe is exposed to constant heat cycles, oil pressure, engine vibration, and environmental contaminants. Over time, these conditions can contribute to deterioration.

Common causes of failure include:

• Corrosion of metal pipe sections
• Age-related material fatigue
• Damage from road debris
• Cracked or weakened connections
• Oil leaks at joints or fittings
• Vibration-related stress fractures
• Damage during engine or oil system repairs
• Seized fittings caused by corrosion

As Porsche 964 models continue to age, original oil lines are increasingly susceptible to wear and deterioration.

Common Symptoms of a Failing Oil Pipe

Signs that the oil filter housing to crankcase pipe may require replacement include:

• Visible oil leaks
• Oil residue around pipe connections
• Corrosion or rust on pipe surfaces
• Oil smells from the engine bay
• Damaged or crushed pipe sections
• Difficulty maintaining proper oil pressure
• Seized or damaged fittings during servicing

Because this component carries pressurised engine oil, any leak should be addressed immediately to avoid potential engine damage.

When Should You Replace It?

Replacement is recommended when:

• Oil leaks become visible
• Corrosion is identified during inspection
• Pipework becomes damaged or restricted
• During engine rebuilds
• During oil system refurbishment
• While replacing oil filter housing components
• As preventoative maintenance on ageing vehicles
  
• During full restoration projectsil pipes

Replacing ageing before failure helps maintain oil pressure, improve reliability, and protect valuable engine components from unnecessary wear.

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

96420725216

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