4W5701 Caterpillar Main Bearing (.025″ Undersize ID, .025″ Oversize OD) | Compatible with 3408, 3408B, 3412 Engines

The Caterpillar Main Bearing (Part Number 4W5701) is engineered for use in Caterpillar 3408, 3408B, and 3412 series engines. This bearing features both a .025″ (0.64mm) undersize inner diameter (ID) and a .025″ (0.64mm) oversize outer diameter (OD), making it ideal for crankshafts and engine blocks that have been machined to these specific dimensions. Constructed from high-quality, heat-resistant materials, it ensures optimal performance and durability under demanding conditions. Designed to meet or exceed OEM standards, this bearing provides reliable support for the crankshaft, reducing friction and wear to enhance engine longevity.