PawOSD, you're a lucky man if your dealer has the spark plugs. The Dallas dealer said he was giving me the last set in existance about 3 years ago.
But he did come down from $4.50 to $2.50 each (such a deal).
He might have since gotten more in, but hopefully I won't have to ask.
That's when I went to Napa and bought all they (and 2 other stores) had in stock - for $1.05 apiece. Ah, love that MB dealer tax.

Hey, I had an old '82 Caddy Eldo with the infamous 4.2 engine. Finally got to trade it for the Benz when the wife began to notice every Eldo she saw had been turned into a lowrider! Sure enough, saw it about a year later - slammed and bombed.

cheers,
DG