Piston: Application and ID

The cylinder codes are stamped on the engine block and piston codes are stamped on the piston crowns. Piston oversizes are available in 3.9559 inch (100.48 mm), 3.9563 inch (100.49 mm), 3.9567 inch (100.5 mm), 3.9756 inch (100.98 mm), 3.9560 inch (100.99 mm), and 3.9764 inch (101 mm). When installing rings, offset 120°.