I've got some Zollner GMC pistons that are NOS and if I remember correctly one set will work in my truck, but of course I didn't make a note of it when my mind had that info firmly in place. So now what i"m left with is the part #/description stamped into the top of one in each set and have had no luck searching myself (hours and hours :() If someone could help or point me in the right direction I would appreciate it.
Zollner Heavy Duty GMC
493-75 Heat Treated
.030 Cam H8
2736879

Zollner Heavy Duty GMC
494-75 Heat Treated
.030 Cam H8
2136819

This is what is stamped on the piston from each set. I have two sets with different numbers.
Thanks for the help.


I'm no "Guy".
Love my '51 GMC 5Window, he's my man and yes, I can FIX him.