Only you know if you have air conditioning....? You don't mention it in your previous posts,
Stands to reason that you need the (longer) belt to loop round the A/C compressor pulley - if you have A/C in the car.
Make sure you know the correct orientation around each pulley for the belt too.
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2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley.
2001 MV Agusta F4.
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