Crank pully washer bolt

[Az32]

Hello

I’m about to put my underdrive pulley and realized I I lost the washer that goes to the big bolt. can I buy a grade 8 washer. What size washer and does any one know the thickness?

[itsa300zx]

The washer is quite hefty, ID is 16.3mm, OD is 43mm, thickness of 8 mm.

[Az32]

Thank you I will got check my local hardware store to see if I find something close to this. Grade 8

[Ace2cool]

I'd get OEM for something as important as that.

[amc49]

You can double up thickness using two if needed to hit the thickness if both are grade 8..........The OEM is generally not as hard, the thickness makes up for it.

[DCaff300ZX]

I'd get OEM for something as important as that.

This, I'd go this route...no need to be going off the reservation here, just do it right the first time and forget about it.