STD Piston Kits & Rings Set 81mm 8-94414-745-1 8944147451 8-97176-892-0 Fits for 3KR1 Engine (Pack of 3) This piston kit and rings set is designed for compatibility with the 3KR1 engine.The set includes three standard size pistons with matching rings, each with a diameter of 81mm.Part numbers included are 8-94414-745-1, 8944147451, and 8-97176-892-0.The components are engineered for precise fitment and performance in applicable engine rebuilds.This pack contains all necessary parts for complete piston assembly replacement. This component is not from the brand.References to models are used only to indicate fitment.