Hi, I'm trying to order parts for my van, and am running into some confusion.
2000 Ram B3500 Maxiwagon, 5.2L vin Y, 4000LB front axle, 8-lug.(8700GVW, Chrysler 9.25 rear)

It seems like rotors are either 5-lug or 8-lug with no other distinction, but I wanted to make sure first.

Wheel bearings & seals are labeled 8-lug, w/ 4000LB axle, etc so those all make sense, but rotors seem vague on details... With wheel bearings listed for front 3300,3600,3800,4000 axles, or "5 & 8 Stud Hub w/o 4000 lb. Axle", it made me wonder if there are differences in 8-lug rotors as well. Do the bearings/races make up for differences between one universal rotor & several different hubs?

Also curious, wheel bearings and races seem to be sold separate. With so many bearing options, are the new races already in the rotors ok to leave in here (like universal size), or do I need to order the separate races for the 4000LB bearings and switch them out of the new rotors?

 

Oh, my memory isn't all that great since I did the job about two or so years back that you are undertaking now.

My B2500 is built on the B3500 chassis. It's considered the B2500 HD with the 1-ton suspension and the 8-lug wheels.

The front rotors usually come with the forged in sprocket for the front ABS, even though this is a option and not standard equipment. The sprocket doesn't get in the way, and will have no usage for the most part. Maybe will act as a finned cooler for the disc. I had to buy the inner and outer bearings with the seals. All of the parts were obtained from NAPA since the local AutoZone, PepBoys and Advanced didn't carry all of the parts. So, I wanted the parts that mated from one place. Timken bearings are the BEST for our vans. I got a China pair prior to this overhaul that lasted only two weeks. The bearings blew apart and ruined the inner well of the disc.

I went out to the garage and looked on the shelf for the extra bearing set I had purchased just-in-case something happens ...
Timken Front Inner Bearing Race 1999-2003 Dodge Ram 2500/3500 Van TMNP566582
Timken Front Outer Bearing Race 1999-2003 Dodge Ram 2500/3500 Van TMNP244401
4000-lb. Axle, 8-Stud disc/drum

FYI --> The bearings and race will be tapered for the front vs. a cylinder shape.

 

Ok, those are the part numbers I got for bearings too. Did you use the races already installed in the new rotors, or did you tap them out and put the Timken races in?

I mainly just need to know if all the 8-lug rotors are the same, or if some are only for 3600LB axle? Their application doesn't seem listed as clearly as bearings are on any site, just whether they are 5 or 8 lug. I didn't want to assume since other hub parts clearly say only for a specific weight axle...

 

Actually used the races in the rotors. I didn't want to risk the tapping to oblong the race itself.

The axles may be the difference between a Chrysler Corp and the Dana 60/70 Spicer requirement. My van has the Chry Corp 9 rear axle.