Where to lookup/find oem parts?

Like @pushbroom said, any pete dealer worth it's salt can look up part numbers, keep the last 8 of the VIN handy. Some will grumble about it because they'll need to break out the old hard copy parts manuals. Chris at MN Peterbilt has been a big help to me in the past, recommend him to you. Getting parts for the older stuff can be daunting, my 362 is an '86, but they are out there.

Many times, pete would stamp the part # on the part, something like "20-12345", often though this # will have been superseded, so ask when you call if it has been.

Over the years, I've driven macks, kw's, binders, shakers, fords, jimmys, you name it. Pete has it hands down, with mack (all mack) and kw a close second.

Ever tear apart the dash on a modern shaker, all the wires are the same color. At least pete color coded and numbered their wiring, making it easier to trace and add or replace.

Most, if not all, mfgr's now-a-days don't stock parts for anything older than 10 years, there's a reason for that, but it has nothing to do with the "quality" of the truck itself.

Pete & KW, are the top two best o/o trucks out there, there's a reason for that.....

 

Do you want to chance the clutch failing and sending your fan thru your radiator and charge air cooler?? The cost for that failure on the highway is going to be expensive.

I wouldn't necessarily go the cheapest route on this.

 

Well I've tried rebuilding one in the past and to me, my time is worth more than the PITA factor of doing it myself.

 

I hear what you're saying, and normally I'd agree with you, but let me ask you this, have you ever rebuilt a fan clutch? If yes, then you know what it involves, but if you haven't I'd strongly suggest that you pay close attention to the various tolerances and steps necessary to do it properly, good luck to you.

Like @AModelCat suggested, with some things, it's sometimes better to just get a good one and put it in, just my two cents...