Main Bearing Set 3945919 for Engine 6B5.9 6C8.3 ISC ISC8.3 ISL8.9 QSC8.3 QSL9

Keywords: 3945919 main bearing set, 6B5.9 6C8.3 ISL8.9 QSL9 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.3945919 is complete crankshaft main bearing kit suitable for 6B5.9, 6C8.3, ISC, ISC8.3, ISL8.9, QSC8.3, QSL9 diesel engines, widely used on excavators and heavy‑duty construction machinery. It bears heavy radial load of crankshaft during engine running, forms stable lubricating oil film and reduces friction loss between crankshaft and engine cylinder block. This replacement bearing set solves common engine failures including abnormal knocking noise, metal rattling, low oil pressure and bearing burnout caused by original bearing wear, surface scratch and alloy layer peeling. Each main bearing set is strictly inspected on material and dimension 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, perfect fit tolerance to keep stable lubricating oil film.
• Good wear‑resistance and anti‑spalling performance, effectively avoid journal scratch damage.
• Reliable surface treatment, extend service life of crankshaft and related engine components.
• Direct replacement installation, ideal for multi‑model engine overhaul and maintenance projects.
• Effectively resolve abnormal knocking and low oil pressure issues resulting from damaged original bearings.

Application Scope

Fit Equipment: Excavators and heavy‑duty machinery equipped with 6B5.9, 6C8.3, ISC, ISC8.3, ISL8.9, QSC8.3, QSL9 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.