|The OEM washer is only .121" thick vs the ARP at .117".
So you are talking only .004" difference between the two in thickness
The ARP are .995" OD vs OEM that are .978".
So the ARP are .017" bigger
Also the ARP are chromoly and hardened. I am not sure on the OEM's.
So I will personally still stick with the ARP over the OEM because they are bigger in diameter.
Kyle "Grumpy Bear" Puckett
Import Parts Pro