Crankcase Parts

Crankshaft seal. 60 X 85 X 10 mm.
The Porsche 99911326340 crankshaft front seal is a genuine OEM part for 928 models (1978–1995). It seals the crankshaft at the front of the engine, preventing oil leaks and protecting vital components.

Fits:
Porsche 928 1978 - 1995

Diagram ref no 3

The crankshaft seal’s job is to keep the front of the engine oil-tight and prevent leaks. By containing the oil, it protects belts, pulleys, and timing components from damage. It also helps maintain the correct oil level, ensuring proper lubrication and long-term engine health.

Signs You Might Need It Replaced:
•  Oil dripping or pooling at the front of the engine or under the vehicle near the crank pulley
•  Visible oil seepage around the crankshaft front seal.
•  Belts / pulleys becoming oily, or clutch interference (if oil sprays back)
•  Smell of burning oil (if it contacts hot surfaces) or smoke.



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99911326340

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Crankshaft seal. 60 X 85 X 10 mm. 
Front crankshaft seal also known as a shaft sealing ring. It sits at the front of the engine, sealing the point where the crankshaft passes through the engine block - typically behind the vibration damper or timing gear. Its purpose is to keep engine oil contained while allowing the crankshaft to spin freely.

Fits:
Porsche 928 1978 - 1995

Diagram ref no 3

Over time, the crankshaft seal can wear down from constant heat, oil exposure, and friction. The rubber lip may harden, crack, or become damaged, losing its ability to seal properly. When this happens, oil begins to leak, which can create a mess, damage engine components, or cause belts and pulleys to slip if oil spreads across them.

How to Know If It’s Failing:
You might suspect the seal is failing if you notice:
•    Oil dripping or forming a puddle under the front section of the engine.
•    Visible oil seepage around the crankshaft front seal area.
•    Smoke or burning smell under the hood (oil hitting a hot surface). Low oil levels without visible external damage.
•    After so many miles or long periods without seal maintenance, even if there’s not a massive leak yet.

If a worn front crankshaft seal isn’t replaced, the oil leak will usually worsen over time. This can lead to significant oil loss and starve the engine of proper lubrication, causing serious internal damage. Leaking oil may also spread onto belts and pulleys, leading to slippage, premature wear, or even belt failure. In addition to making a mess and degrading nearby components, oil on hot surfaces can pose a fire hazard. Left unchecked, the problem often becomes more expensive to fix, especially if the leak reaches sensors, wiring, or other critical parts.  

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99911326340

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Oil drain plug. Porsche 911 / 964 / 993 M20 X1.5 MAGNETIC


Fits:
Porsche 911 3.2 Carrera - 1984 to 1989 Oil Drain Plug for side of crankcase
Porsche 911 - 1978 to 1984 Oil Drain plug for sump plate
Porsche 964 - 1989 to 1994
Porsche 993 - 1995 to 1998
Porsche 996 turbo / GT3 - 
Porsche 924S - 1986 to 1988
Porsche 944 - 1982 to 1991
Porsche 968 - 1992 to 1995
Porsche 928 - 1978 to 1995

Diagram ref no 22

A magnetic sump oil drain plug is a type of oil drain plug that contains a small magnet designed to attract and capture metallic particles that may be present in your engine's oil. While this type of drain plug is not exclusive to Porsche and can be used in various vehicles, it can provide several benefits, including:

Improved Engine Longevity: The magnet in the drain plug helps to capture tiny metal particles, such as iron, steel, or aluminum, that may circulate in the engine oil. Removing these particles can reduce wear and tear on engine components, potentially extending the engine's lifespan.

Enhanced Engine Performance: By reducing the presence of contaminants in the oil, a magnetic drain plug can help maintain the oil's lubricating properties, which is crucial for smooth engine operation. Clean oil can also contribute to improved fuel efficiency.

Early Detection of Problems: As the magnetic drain plug collects metallic debris, it can serve as an early warning system. By inspecting the drain plug during oil changes, you can get an idea of the engine's condition and detect any unusual wear or damage before it becomes a major issue.

Reduced Maintenance Costs: Regularly inspecting and cleaning a magnetic drain plug can prevent larger issues from developing over time. Addressing potential problems early can save you money on more extensive repairs down the road.

Peace of Mind: Knowing that you are taking steps to protect your engine from premature wear and tear can give you peace of mind as a vehicle owner. It's a relatively inexpensive and simple modification that can provide added assurance.

Easy Installation: Magnetic drain plugs are typically straightforward to install. They often replace the existing drain plug and require no special tools or modifications.

While magnetic drain plugs can offer these benefits, it's essential to remember that they are not a substitute for regular oil changes and proper maintenance. Regular oil changes with the appropriate oil and filter are still crucial for the health and longevity of your engine. Additionally, magnetic drain plugs may not capture all types of contaminants, so they should be seen as a supplementary measure rather than a comprehensive solution.

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94410719711

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Oil drain plug. Porsche 911 / 964 / 993 M20 X1.5 Magnetic

Fits:
Porsche 911 3.2 Carrera - 1984 to 1989 Oil Drain Plug for side of crankcase
Porsche 911 - 1978 to 1984 Oil Drain plug for sump plate
Porsche 964 - 1989 to 1994
Porsche 993 - 1995 to 1998
Porsche 996 turbo / GT3 - 
Porsche 924S - 1986 to 1988
Porsche 944 - 1982 to 1991
Porsche 968 - 1992 to 1995
Porsche 928 - 1978 to 1995

Diagram ref no 22

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94410719711

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Oil Splash Valve. Sold as each.

Length: 21.5mm, Diameter: 6.2mm

Fits:
Porsche 911 SC - 1978 to 1983 (6 required)
Porsche 911 3.2 Carrera - 1984 to 1989 (6 required)
Porsche 928 S4 / 928 GT - 1987 to 1992 (8 required)

Diagram ref no 15

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91110101101

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Oil Splash Valve. Sold as each.

Length: 21.5mm, Diameter: 6.2mm

Fits:
Porsche 911 SC - 1978 to 1983 (6 required)
Porsche 911 3.2 Carrera - 1984 to 1989 (6 required)
Porsche 928 S4 / 928 GT - 1987 to 1992 (8 required)

Diagram ref no 15

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91110101101

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Oil sump gasket.



Fits:
Porsche 928 1978-95

Click 'Zoom in' for large parts diagram.
Diagram ref no 22.

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92810120700

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Oil sump gasket.



Fits:
Porsche 928 1978-95

Click 'Zoom in' for large parts diagram.
Diagram ref no 22.

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92810120700

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Rear Main Oil Seal. 90 x 110 x 12.
Fitting Position: Transmission End, Inner Diameter: 90 mm, Outer diameter: 110 mm, Width: 12 mm, Radial Shaft Seal Design



Fits:
Porsche 964 1989-94
Porsche 993 1994-98
Porsche 996 Turbo / GT2 / GT3 MKI

Porsche 944 - All models including 944S, 944 Turbo & 944S2 built 1982-1991

Porsche 924S - All models built 1986-1988

Porsche 928 - All models built 1986-1995

Porsche 968 - All models built 1992-1995

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

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99911342641

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Rear Main Oil Seal. 90 x 110 x 12.
Fitting Position: Transmission End, Inner Diameter: 90 mm, Outer diameter: 110 mm, Width: 12 mm, Radial Shaft Seal Design.

Fits:
Porsche 964 1989-94
Porsche 993 1994-98
Porsche 996 Turbo / GT2 / GT3 MKI

Porsche 944 - All models including 944S, 944 Turbo & 944 S2 built 1982-1991
Porsche 924S - All models built 1986-1988
Porsche 928 - All models built 1986-1995
Porsche 968 - All models built 1992-1995

Diagram Ref No. 21

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99911342641

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