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Your Vehicle  //  Porsche  //  924 (1977-1988)  //  924S 2.5L 1986-87
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91110774312/1
Product Information
Product Information

This OE Match engine-to-thermostat oil pipe serves the specified Porsche 911, Carrera, SC and Turbo applications. It connects the engine oil circuit to the thermostat as part of the oil circulation system.

Fits

  • Porsche 911 3.0 03/74-07/83
  • Porsche 911 Turbo 3.0 01/75-07/77

Check fitment for your specific vehicle (model, year, engine) before ordering.

Diagram reference number: 9

What This Product Does

The pipe provides an oil passage between the engine and thermostat. It is a connecting component, rather than the thermostat itself: temperature-dependent flow control remains the role of the thermostat assembly.

Functions

  • Conveys engine oil to the thermostat connection.
  • Provides the specified connection between these oil-system components.
  • Replaces a leaking or damaged pipe during maintenance or restoration.

Technical Details

  • Brand: OE Match.
  • Part number: 91110774312.
  • Associated supplied reference: 91110774310.
  • Installation connection: engine to thermostat.

Symptoms of Fault

  • Fresh oil beneath the vehicle.
  • Wetness along the pipe or around its connections.
  • Burning-oil odour following a journey.
  • Smoke where escaping oil reaches hot exhaust parts.
  • Visible corrosion, cracking or contact damage.
  • Oil loss requiring repeated topping up.

Why Replacement Matters

A deteriorated pipe or connection can allow oil to escape. Renewing a confirmed faulty line addresses that leak and restores the intended oil route. Inspect adjoining unions, sealing surfaces and supporting components during the repair, especially if the pipe has been disturbed during engine work.

FAQs

Does oil around a connection mean the pipe has failed?
Not necessarily. Check the union and sealing surfaces as well as the pipe before deciding which component needs replacement.

Why can a leak appear after other maintenance?
Moving ageing pipework or connections can disturb an existing seal. Inspect the area for fresh oil after reassembly.

What should be checked after fitting?
Remove old oil residue, confirm the oil level using the vehicle-specific procedure and inspect the connections again after operating-temperature cycles.



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Related, superseded, cross reference or alternative numbers for comparison.

91110774312
91110774310
91110774312

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