The CYL. BLOCK DRAIN TAP 18-4218 is a high-quality Cylinder Block Drain Tap that matches MerCruiser cylinder blocks and exhaust manifolds made of high-quality materials that are resistant to wear and...
• M10 - frame tap for derailleur hanger (616079) M5 - frame tap for water bottle, fender, rack bosses (616078) M3 - frame tap for rear wheel dropout alignment screws (616077)