Which 12 bolt rear axle is this?

Just measure the diameter of the ring gear.

Vdv8 said:

Just measure the diameter of the ring gear.

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Hmmmmm than I have to open again...
No other way?

renek74 said:

Hmmmmm than I have to open again...
No other way?

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Post a picture of the differential cover.

vctroneill43 said:

Post a picture of the differential cover.

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You have a 12 bolt housing so you had the 8.75" gears.

vctroneill43 said:

You have a 12 bolt housing so you had the 8.75" gears.

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I meant you have the 8.75 gears.

8.75 gears?

renek74 said:

View attachment 155983

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That's the original 12 bolt differential that your EC came with from the factory per this cover and part number on the housing.

vctroneill43 said:

That's the original 12 bolt differential that your EC came with from the factory per this cover and part number on the housing.

Click to expand...

And the gear must be 8,75?.inside is open differential. According the axle, factory was with limited slip....

"And the gear must be 8,75?" Yes if you don't believe me take off the cover and count the number of bolts in the ring gear. It should have 12 bolts and you can check to see if you have limited slip at the same time (will need special lubrication).

I had open see pictures from my first post. No limited slip inside. Will input one... That's why I ask for the gear ring. Will leave ring and pinion. Looks good...