OEM Mercury-Mercruiser piston ring set (39-9166A12) precision cast iron and chromium-plated compression rings maintain proper piston-bore sealing during combustion. This genuine ring set restores compression and oil control during engine rebuild.
39-9166A12? Mercury PISTON-RING
€ 4,95
Genuine Mercury-Mercruiser piston ring set part number 39-9166A12 comprises compression rings used in Mercury outboard and Mercruiser sterndrive engine cylinders. Standard thickness and clearance rings maintain proper piston-bore sealing during combustion. Precision-manufactured from cast iron with hard chromium plating for durability and wear resistance. Used during engine overhaul and rebuild to restore compression and oil control. Consult service manual for bore size and specific engine compatibility before installation.
8 in stock
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