Caterpillar 1N-4321 Main Bearing - 1N4321
Main BearingFor Caterpillar earthmoving equipment: Main Bearing (ref. 1N-4321 / 1N4321) — original factory and OEM wear parts and components. 1-year warranty. Worldwide shipping.
Caterpillar 1N-4321 / 1N4321 Main Bearing is an OEM and aftermarket main bearing set for Caterpillar diesel engines in industrial equipment. Manufactured to OEM overlay alloy composition and wall thickness for correct crankshaft journal clearance and reliable hydrodynamic lubrication under continuous operation. Ships with a 1-year warranty. Meets performance requirements for modern heavy off-highway machinery.
Caterpillar