Crankshaft sprocket bolt size?

[powermaxx]

It took so long to get my short block back that the bolt is now MIA. The only bolt that came back from the machine shop looks like it is a 12mm coarse and it don't want to screw in. So I assume it's the fine thread. With all of my spare parts I've spent the last 2 hours looking for one and it's a big "ZERO"! Can someone tell me what the actual size is and the length?

I have an 89 2.2 CB (they are all probably the same but you never know). I pulled one from an 83 2.2 N and it is way too small so there are some differences just don't know what years they changed.

TIA

[moparfwdsleeper]

M8s can't remember the other measurement... Oil pan bolts work great

[powermaxx]

Not the pulley to the crankshaft sprocket bolts. Just the main bolt that holds the sprocket to the crankshaft. I know it's 12mm from the FSM showing the the install tool (it calls out a 12mm but no thread pitch).

[BadAssPerformance]

M12x1.75 sounds familiar... but try to thread a spare mopar M12x1.5 lug nut on it to see if it is the same or not

[4 l-bodies]

M12x1.75 sounds familiar... but try to thread a spare mopar M12x1.5 lug nut on it to see if it is the same or not

JT got it. 12 X 1.75 x 75mm for C/B's.
Todd

[tryingbe]

I use a 12 X 1.75x 10mm all thread and matching nut for the replacement for that bolt.