Construction Machinery Engine Parts Main Bearing Set 3945918 for 6CT8.3

Keywords: 3945918 main bearing set, 6CT8.3 crankshaft main bearing kit, diesel engine main bearing shell, excavator engine spare parts, construction machinery main bearing, aftermarket replacement bearing set

Product Overview

Main Bearing Set Part No.3945918 is complete crankshaft main bearing kit designed for 6CT8.3 diesel engine, widely applied on excavators and heavy‑duty construction machinery. It bears heavy radial load of crankshaft during engine operation, forms stable lubricating oil film and reduces friction loss between crankshaft and engine cylinder block. This replacement bearing set resolves typical engine faults including abnormal knocking noise, metal rattling, low oil pressure and bearing burnout caused by original bearing wear, surface scratch and alloy layer peeling. Every main bearing set undergoes strict material test and dimensional tolerance inspection before shipment.

Detailed Specifications

Key Features & Advantages

• High‑quality bimetallic alloy material, excellent load‑bearing and anti‑friction performance under heavy‑duty working conditions.
• High‑precision machining dimension, perfect fitting tolerance to maintain stable lubricating oil film.
• Good wear‑resistance and anti‑spalling property, effectively prevent crankshaft journal scratch damage.
• Reliable surface treatment, extend service life of crankshaft and other matching engine components.
• Direct replacement installation, ideal for 6CT8.3 engine overhaul and maintenance projects.
• Effectively eliminate abnormal knocking and low oil pressure troubles caused by damaged original bearings.

Application Scope

Fit Equipment: Excavators and heavy‑duty machinery equipped with 6CT8.3 diesel engine ‑ Widely applied for engine repair workshops and routine equipment maintenance projects.

Our Company Advantage

We are professional supplier of full‑range construction machinery spare parts, supplying engine parts, hydraulic parts, electrical parts, seal kits and complete overhaul kits. ‑ Large ready stock for various machinery spare parts ‑ Factory‑direct wholesale competitive price ‑ Mixed‑order & one‑stop spare‑parts procurement supported ‑ Professional part‑number matching technical support service

Packaging & Shipping

Neutral export carton box with shock‑proof inner packing, avoid scratch and collision during long‑distance transportation ‑ Multiple shipping options: sea freight, air freight, international express for small trial orders ‑ Export documents such as Commercial Invoice, Packing List can be provided.

Contact Us

If you need more excavator spare parts or other construction machinery replacement components, please send your parts list to us. We will offer our best quotation for you quickly.