3TN66 Piston Rings for 3TN66L 3TN66E 3TN66UJ 3TN66-UJ 3 Cylinders 66mm STD for 330 332 66*1.5+1.5+3.5 Piston rings designed to fit 3TN66 engine models including 3TN66L, 3TN66E, 3TN66UJ, and 3TN66-UJ.Compatible with 3-cylinder engines with a 66mm standard bore size.Set includes three rings per cylinder with dimensions of 66mm and thicknesses of 1.5mm, 1.5mm, and 3.5mm.Intended for use in engine rebuilds and replacements for models 330 and 332. Important Notice: This aftermarket part is unaffiliated with brands.Model mentions indicate fitment only.