Lower Main Bearing Green

CFMoto Lower Main Bearing - Green

OEM Part Number 0NYV-011004-1000-Q0-00002

🔩 Lower Main Bearing · Green · Engine Crankshaft

OEM quality · Direct replacement · Ensures crankshaft support and oil clearance

This is a genuine OEM-spec CFMoto Lower Main Bearing - Green, part number 0NYV-011004-1000-Q0-00002. Main bearings are critical components of the engine's crankshaft assembly. Installed in the crankcase main bearing saddles, they support the crankshaft journals, bear immense loads from combustion, and maintain a lubricating oil film. This direct replacement part restores proper crankshaft alignment and support. Fits various CFMoto SSV and UTV models (380Y-2A and 380Y-3 engines).

This Lower Main Bearing (0NYV-011004-1000-Q0-00002) fits the following CFMoto models:

• OEM OE Quality: Manufactured to original specifications, ensuring identical wall thickness, bore diameter, and material.
• Premium Alloy Material: Multi-layer composite construction, typically a steel backing with a copper-lead alloy and a wear-resistant overlay, providing exceptional load capacity and fatigue resistance.
• Precision Machined: Bore is precision finished to ensure correct clearance with the crankshaft journal and proper oil film formation.
• Color Coded: The green marking precisely identifies the size grade, ensuring correct matching with the crankshaft and bearing bore.
• Direct Replacement: Designed for bolt-in installation – a critical replacement part during engine overhaul.
• Protects Crankshaft: Provides a smooth bearing surface, reduces friction, and prevents crankshaft wear and seizure.

🛑 The Importance of Main Bearings

Main bearings are among the most critical plain bearings in an engine. They support the crankshaft and bear the immense forces generated by combustion. They must operate under severe conditions of high speed, high load, high temperature, and pressure-fed lubrication. Worn, scored, or fatigued bearings increase clearance, lower oil pressure, and produce a deep knocking sound. In severe cases, they can cause the crankshaft to seize (spun bearing), resulting in catastrophic engine failure. During an engine rebuild, using OEM-quality bearings and correctly selecting the proper size grade (often indicated by color) is essential for ensuring correct clearance and oil film.