LOL...persitant are we? Ill see if I can reach em' with my caliper real quick and report back...

 

1.0980 in I.D. first measurement.....1.1125 in. I.D. Second measurement. Hope this helps. O yea, mines a 5.9.

 

ok, you're the man.
i interpret that to be 1-1/8 shallow cup (SC). qty 4.

I think I'll drop by the dealer tomorrow and see if i can get a part number.
I'm not finding any on dorman's site for Dodge application, and nothing in the usual web sites like napa, advance, autozone, etc.

head measurements, twice= 1.0980 and 1.1125


cup steel brass closed open
depth number number end end mm

larger than 1 = 1.0000
deep 555-017 565-017 1.002--1.010 25.56
shallow 555-018 565-018 1.007--1.018 25.73

larger than 1-1/32 = 1.0312

larger than 1-1/16 = 1.0625

approx = 1-1/8 = 1.1250
deep 555-019 565-019 1.132--1.142 28.89
shallow 555-020 565-020 1.120--1.132 28.61