Original Porsche Part Genuine Porsche part 99970711340

Code: 99970711340

Genuine Porsche part

Original Porsche Part

The product code 99970711340 was also found on these diagrams

104-10 - round seal 20,22 x 3,53

oil filter bracket 996 GT3-1 M96.76 2000-01 and 996 GT3-1/GT3 RS M96.79 2004-05

Additional information:

• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.

Before purchasing thoroughly check part to confirm compatibility.

Related products

Oil tube seal. Porsche 911 / 964 / 993

9997071124A/1

Product Information

Oil tube seal for crankcase distribution oil pipes.
Round oil return tube O-ring used at the outer ends of the crankcase oil distribution / return tubes. Each tube uses two seals, and a complete engine typically requires multiple O-rings depending on tube type and configuration (often eight per engine on many 911/964/993 applications).
Sold each.

Fits:
Porsche 911 1970 - 1989
Porsche 964 1989 - 1994
Porsche 993 1994 - 1998

Diagram ref no 14.

This seal provides a leak-tight joint between the oil return tube and the crankcase or associated oil galleries. By sealing the tube ends, it:
• Prevents engine oil leaks at the tube junctions.
• Helps maintain correct oil circulation and system pressure.
• Keeps oil off the heat exchangers, exhaust and underside of the engine, reducing smells, smoke and contamination.

With age, heat and constant oil exposure, original O-rings can harden, flatten, crack or shrink. When they fail:
• Oil begins to weep or drip from the crankcase / tube junctions.
• The underside of the engine, heat exchangers and exhaust can become oil-soaked, causing burning smells and smoke.
• You may see oil spots under the car and gradual oil loss between services.

Replacing tired seals is a low-cost, high-impact fix that significantly reduces leaks and keeps the engine bay cleaner.

When to Replace
Consider replacing these oil tube seals if:
• You see oil leaks or dampness around the oil return tubes or crankcase unions.
• The engine is undergoing an oil return tube replacement (solid or collapsible).
• You’re performing an engine refresh, top-end rebuild, or major oil system service.
• The car shows persistent oil drips on the floor despite other seals being renewed.

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Related, superseded, cross reference or alternative numbers for comparison.

9997071124A

99970111350

99970146540

99970711240

9997071124A

The product you are viewing cross references to these numbers

O-ring cylinder base 102x2. Porsche 964 /993

99970715240/1

Product Information

O-ring cylinder base 102 x 2.
Fitted into the cylinder base sealing groove, the O-ring compresses between the cylinder and crankcase to form an oil-tight barrier that withstands temperature changes and engine vibration.
Sold each, 6 required per car.

Fits:
Porsche 964 Carrera 2 / Carrera 4 / RS / turbo 1989 - 1994
Porsche 993 Carrera 2 / Carrera 4 / Carrera S / Carrera 4S / turbo 1994 - 1997

Diagram ref no 2

This OE Match O-ring is manufactured to OE-equivalent dimensions and material properties to provide a reliable seal at the cylinder-to-case interface. Correct sealing here is essential to prevent oil seepage during heat cycles and maintain a clean, properly sealed engine during rebuild or maintenance work. Ideal for engine overhauls, reseals, or any time cylinders are removed, this direct-fit O-ring restores the original sealing function without modification.

Old O-rings can harden, flatten, or crack with age and heat, increasing the likelihood of oil seepage at the cylinder base. Replacing them during engine work helps ensure a proper reseal, reducing leaks and protecting surrounding components from oil contamination.

When to replace:
•  During engine rebuilds or top-end work (cylinders removed)
•  Any time cylinder bases are resealed
•  Visible oil seepage at cylinder-to-case area
•  High-mileage preventative reseal

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

99970715240

99970715240

The product you are viewing cross references to these numbers

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Original Porsche Part Genuine Porsche part 99970711340