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Porsche 991 (911) MK1 2012-2016 991.1 R 4.0L (500 Bhp) 2016 Engine Cooling Air cooling parts

Alternator air deflector. Porsche 911 / 930 Turbo / 914-6  ›  91110603300

Alternator air deflector. Porsche 911 / 930 Turbo / 914-6 - 91110603300 - COL11.1.141
4
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91110603300/1
Product Information
Product Information

This OE Match alternator air deflector suits the listed Porsche 911, 930 Turbo and 914-6 applications. Mounted behind the alternator, it guides cooling air towards the engine cylinders.

Fits

  • Porsche 911 - 1970 to 1973
  • Porsche 911 2.7 MFI - 1974 to 1977
  • Porsche 911 turbo - 1975 to 1977
  • Porsche 914-6

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

Diagram ref no 13

What This Product Does

Acting as a baffle within the engine's air-cooling assembly, the deflector directs airflow after it passes the alternator. Its role concerns cylinder cooling rather than electrical generation; it is not a replacement alternator.

Functions

  • Guides cooling air towards the cylinders.
  • Forms part of the airflow-guiding assembly behind the alternator.

Technical Details

  • Brand: OE Match.
  • Supplied part reference: 91110603300.
  • Internal diagram terminology: hub extension or hub extension complete.
  • Attachment location: rear of the alternator.

Symptoms of Fault

  • Visible cracking or distortion in the air-guiding component.
  • Damaged ducting or gaps within the cooling assembly.
  • Unusually high engine or oil temperatures, which require diagnosis of the wider cooling system.

Why Replacement Matters

A broken or missing baffle can interrupt the intended cooling-air path. Renewing a damaged component helps restore the assembly's airflow guidance. Inspect nearby shrouds, seals and fixings during the work, as replacing the deflector alone will not address faults elsewhere.

FAQs

Where does the deflector attach?
It is bolted onto the alternator's rear face.

Does increased temperature confirm a defective deflector?
No. Inspect the air guides, fan housing, seals and surrounding cooling components before deciding which part needs renewal.



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Related, superseded, cross reference or alternative numbers for comparison.

91110603300
91110603300

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