Big-Sert head alignment Dowel GM .617 Part J-42385-508BS IS FOR BIG-SERT KITS ONLY
HEAD ALIGNMENTDOWEL FOR BIG-SERT KIT
J-42385-500BS & 2200BS Kits
Two are needed when doing one side of the 500BS engine and four with both sides. KIT ALREADY CONTAIN TWO .617 SIZED DOWEL PINS IN THE APPROPRIATE KIT.
