Difference in brake drum part numbers?

Gathering stuff to redo brakes on my 1999 4x4

Looked up part numbers for brake drums and there are 2 part numbers

4243135180
4243135210

Both the Toyota site says are a for for my truck by serial number

Top one is ~$15 more

I cannot find anywhere that tells me the difference
What am I getting for $15 more?

Also it has this in description (this is just a part)
How do I use/interpret this?

From 198508 to 198808.
00003K0501 0; LN66,RN6#,VZN6#;
From 199902 to 200112.
000013 0; UCK30,40,VCK30,40;

 

That is what I was afraid of

I had a 99 Super Duty that was mid year model and it was a PIA to get parts right half the time

 

You're correct, both of those part numbers come up under the same reference number:


I'd be willing to bet these belong to either the truck - 02/03 (with the parking brake cable above the axle housing) and the 03-04 (with the parking brake cable below the axle housing), but it's just a guess, and I wouldn't have a clue on how to tell the drums apart.

Question though- Can you try turning your existing drums? I had mine turned @ 145k without an issue. Took them to a local shop, and they turned them around in 45 minutes for around $15 a piece. It was a ton cheaper than $170-190 bucks!

Also... I feel like the wheel cylinder and shoes are more important to get OEM parts for over the drums- So you might want to check the local parts stores and see what their higher-end options are if you're set on new ones.

 

Definitely going to look into turning drums, just collecting part numbers to be prepared in advance.

Wheel cylinders and shoes definitely getting replaced

Truck is 99 model with parking brake above axle I am pretty sure

 

Have you worked on drum brakes before?

If not, I HIGHLY suggest getting the drum brake tool kit, specifically the spring retaining tool and the shoe pliers. I think HF sells a cheap kit. They will make your life SO MUCH easier. I've done my shoes once without, and learned my lesson the hard way. The second time was a breeze.

Also, if you're replacing your wheel cylinders, I highly suggest a Motiv power bleeder... and obviously flushing the entire system to get as much of the old fluid out as possible.

 

I have but I may grab that cheap set of tools
Will look up power bleeder

 

I can`t be sure some Trucks have different size Brake Lining

For Years I used Raybestos Brake products Now I have gone to Napa Ultra Premium for Brake Parts.

Even at 30% off List Toyota Brake Drums are a little expensive.

Good Luck getting Brake Drums Turned No one in my area does it any longer It is no longer cost effective

 

I looked at the OEM shoes, and it's easy to tell which diagram is which for the parking brake cable variation based on the backing plate and bell crank position.

Diagram 470418 is above the axle
Diagram 473102 is below the axle

HOWEVER, both of these diagrams call out to the same shoe reference and part number: 04495/04495-35230. That part has the related part number 42431-35180 for the drums. I don't know if that means anything... Also worth mentioning, that both of those diagrams have the same callout for the backing plate, which obviously is not correct.