IPD® Caterpillar® 6I4421 Cylinder Block Spacer Plate (3406E / C15 / C16 / C18) (Expected Late July 2026) M 1176523 Part Number OEM Number Description

Part Number OEM Number Description Qty 505146 3964073 TOP PISTON RING 1 505148 3928294 INTERMEDIATE PISTON RING 1 505153 5296700 OIL CONTROL PITON RING 1 Please do not hesitate to contact us with your vehicle

PAI 331578 CATERPILLAR 4N0659 GASKET

745-K049777

Item 17 in Drawings 3 and 4

IPD® Caterpillar® 6I4421 Cylinder Block Spacer Plate (3406E / C15 / C16 / C18) (Expected Late July 2026) M 1176523 Part Number OEM Number DescriptionProduct Details : Select Caterpillar Applications : 3406E C15 C16 C18 Series Engines. Cylinder Block Spacer Plate (0. 338" Thick). OEM Reference : Caterpillar 6I4421. Please do not hesitate to contact us with your vehicle, engine and or part(s) details to determine if this product is appropriate for your particular engine and or application. IPD : Premium Quality Aftermarket Engine Parts ISO9001: 2015 Certified Heavily Focused on U. S. A.