Vehicle & Technical > Discovery

what size bolt for rear diff?

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Matt_H:
Hello,

I picked up one of those nice wraparound diff defenders at sodbury nice and cheaply but it didn't come with bolts.  It mounts to the two holes that are near to where the axle connects (Rear diff - not sure if front is the same).. Does anyone happen to know what size they are as I'm pretty sure they aren't metric.

Would it be a problem to tap them out to the next biggest metric size? Are they meant for anything in particular?

TIA
Matthew

Bobtail:
it should be metric

Range Rover Blues:
The front and rear are the same diff so the holes should be there, the diff guards are different, if it's the QT ones then the rear has a rockslider to protect the propshaft UJ and the front covers the track rod and prevents it being pulled back if it catches.  Mine came with the bolts and I didn't pay attention to the size but I'm not sure they were metric (but then it's late).  Look on the QT website for fitting instructions as I seem to recall it tells you the bolt sizes in the instructions that came with them.

karloss:
They are not metric they are 3/8 something, BSF? UNC? Not entirely sure. It's a bit too close to M10 to tap out. It wont leave you with much meat. I've got a tap for those I'll have a butchers and see what size it is.

I'll be back......

hobbit:
Will it drill through and but a nut and bolt in its place

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