Originally Posted by bspence

Cost at Arrowhead Benz dealer in Peoria AZ for the small bolts was, list $3.08, sold for $2.50 each, $12.50 for all 5. Just mention it's a M312 engine in a SLK 320. Don't bring up Crossfire. These have a hex head instead of Torx. Part number was 000000-004436.