Bought a cheap 03 R50 that was overheating. Just replaced head gasket, valves, timing chain kit, crank pulley, Idler pulley/tensioner, water pump, radiator, condenser, transmission filter, heater core, serpentine belt, etc. It starts up fine for about 3 seconds then there is a high pitch squeel around the serpentine belt. I haven't filled the A/C system yet. Would that cause the squeel? Any help would be appreciated!

Make sure you have the correct belt.
6pk1033 is the belt you need

Wrong belt.

What brand is 6pk1033?

Any brand will work. Just type in 6pk1033 in Google search. You get all different brands.

Ok, I did that after I thought about it for a minute! LOL. On my way to NAPA to pick one up now! Thanks for the help! Much appreciated!

How did it work?

Had to come to a meeting for work. Got belt, gonna work on it tonight when I get home. I'll let you know! Thanx again!

Hello everyone, I had the same issue today after driving my car, an '03 R53, about 200 miles with no issues on this belt. It started squealing out of the blue. I am guessing I may have also gotten the wrong belt, as the one I currently have on it is this:


Not called 6pk1033... but then does an R53 have a different belt than an R50?

Multiple people on Amazon say that this belt will work, and I am wondering why the car didn't make the squealing noise for the other 200 miles, what would cause it to just start now?

I have a 17% reduction pulley on the car.

R53 is different. With the 17% pulley an being supercharged . You will need a different belt. Cannot use stock belt. Try Waymotorworks an see the correct belt

I did replace the belt with the pulley, with the K060535 belt specifically, which I linked above.

K060535 is what came with my 15% kit so it might be slipping on your 17% pulley. Also, how is the condition of your belt tensioner and crank pulley?

I took the crank pulley off to inspect it, it was fine as far as I could tell. The rubber portion was still whole, not broken in two like often happens.

The tensioner is fine as far as I know, but I don't know if I could tell if it wasn't. What would be the tell that the tensioner is going?

I may try putting on the 532 belt, which is slightly shorter and tighter, and see if that fixes anything. I somewhat doubt it would, as everyone online seems to report that the 535 works fine with a 17%, but it may be worth a shot.

shrevemini,
That was it!! Thanks so much. This forum is great!

No problem . Just paying it forward.