As I have said on another recent thread, the 6 is the number of ribs and the 1203 is the length. It is important to get that correct as the tensioner is simply spring loaded so if you get one too long, it will end up floppy..
You don’t say what sort of noise you are experiencing. If it’s a squeal, then it could be the belt slipping under load, typical of when the alternator is working hard to recharge the battery after starting. i.e battery is in poor state of charge.
If you have a squeal, a small squirt of WD40 on the belt whilst running may immediately quieten it. No cure, but rules out the pulley and tensioner.
Last edited by Deejay; 28/01/23 07:51 PM. Reason: more added about battery
