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Product details
The Continental 10X710 is a 10 mm wide, 710 mm long V-belt that drives the alternator and cooling fan on the air-cooled Porsche 911, 911 Turbo, and 914-6, supplied by EMPI as part number 68-1091-0. On these engines the cooling fan rides on the alternator shaft, so this one belt runs both the charging system and engine cooling. A broken belt stops both at once, so carry a spare. It matches the size of Porsche part 999 192 176 5A, and one belt is used per car.
Replace the belt at the first sign of cracks, fraying, or glazing, or when it squeals at startup or under electrical load.
Technical Details
- Manufacturer: Continental
- Supplied by: EMPI
- Manufacturer part number: 68-1091-0
- Size: 10X710 (10 mm x 710 mm)
- Porsche size reference: 999 192 176 5A
- Quantity per car: One
- Sold as: Each
Fitment & Compatibility
EMPI lists this belt for the 1965–1975 and 1980–1989 Porsche 911, the 1970–1972 914-6, and the 1976–1989 911 Turbo. For a 1976–1979 non-turbo 911, which is not on that list, check the size on your old belt first.
Installation & Tuning Notes
Belt tension on these engines is set with six shims at the alternator pulley, split between the two pulley halves and the outside of the pulley. Moving a shim from between the halves to the outside tightens the belt, and moving one back loosens it. Adjust one shim at a time and set deflection to the factory manual figure. Recheck after the first drive, since new belts stretch.
Common Questions
Does this belt also run the cooling fan?
Yes. The fan rides on the alternator shaft, so this belt drives both.
Will this fit my 1978 911SC?
EMPI does not list 1976–1979 non-turbo 911s, so check the size on your current belt first.
