rilonprime

Hey gang, noticed my HB/crankshaft pulley is wobbling when I peeked under the hood at the gas station. I read that it's fairly common on m112/m113 engines, and should be fixed ASAP. Here's a video of the wobbling pulley (apologies for vertical filming):


Tried looking up a new HB online and am only finding ones for $500 ($590 from local Benz dealer), and none on eBay. However, I realize that plenty of other vehicles had our engine (like the w210 e55), does anyone know if I can use a HB from any m113 engine? How about an m112?

Thanks,
Rilon