The Class relates to the difference in leak back rate which is compensated for by the ECM.
Assuming the above combination of all five were fitted, these are suitable for a Class 1 programmed ECM with no modification in Vida.
They can also be fitted to a Class 2 and Class 3 system so long as its followed by an ECM reprogram with Vida (takes 2 minutes) for optimal performance.
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2002 S60 SE D5 Manual
209000 miles
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