Drive Belt for Under Drive Pully cars WITHOUT Aircon Porsche 996/ Boxster 986

Drive Belt for Motorsport Under Drive Pully cars WITHOUT Aircon Porsche 996/ Boxster 986

What size serpentine belt to run when using an under drive pulley?

The stock serpentine belt length for a 986 Porsche Boxster or Porsche 996 with air conditioning is 2115mm Porsche part # 996 102 151 64. If you remove the air conditioning but keep the stock drive pulley you will need a new serpentine belt that is 1930mm in length. If you then decide to add an underdrive pulley in the range of 4.25 to 5 inches in diameter you will need a belt 1905mm in length. For those of you who would like to add an under drive pulley with air conditioning, the proper length is 2101mm.

So in review:
Stock pulley w/o air conditioning - 1930mm
Under drive pulley w/o air conditioning - 1905mm


Fits:
Porsche 996 3.4L
Porsche 996 3.6L
Porsche Boxster 986

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Related, superseded, cross reference or alternative numbers for comparison.

99610215198

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