Connecting Rod Bushing 4891178 for Engine ISB ISBE QSB5.9

Keywords: 4891178 connecting rod bushing, ISB ISBE QSB5.9 rod bushing, cumm-ins engine connecting rod bushing, excavator diesel engine piston pin bushing, construction machinery engine spare parts, heavy‑duty engine connecting rod bushing, aftermarket replacement rod bushing

🔹Product Overview

Connecting Rod Bushing Part No.4891178 is critical wear‑resistant component installed between connecting rod small end and piston pin, compatible with cumm-ins ISB, ISBE, QSB5.9 diesel engines widely used on excavators and heavy‑duty machinery. It provides smooth rotating support for piston pin, reduces friction wear between connecting rod and piston pin, and bears repeated impact load during engine combustion stroke. This replacement bushing effectively resolves common engine failures including piston pin abnormal noise, connecting rod small‑end wear, increased clearance, engine power drop and metal particle contamination in engine oil caused by original bushing abrasion, seizure and inner‑hole enlargement. Each connecting rod bushing undergoes strict dimensional tolerance inspection, inner‑hole finish test and hardness verification before shipment.

🔹Detailed Specifications

🔹Key Features & Advantages

• High‑wear‑resistance copper alloy material, excellent anti‑seizure and load‑bearing performance under heavy‑duty engine working conditions.
• Precise inner‑hole and outer‑diameter machining, perfect interference fit with connecting rod small end, accurate guiding for piston pin rotation.
• Smooth inner surface with good oil‑retention performance, forms stable lubrication oil film, effectively reduces friction and wear.
• Effectively eliminate piston pin knocking noise, restore normal connecting rod clearance, protect piston pin and connecting rod from early damage.
• Perfect fit for cumm-ins ISB ISBE QSB5.9 engine overhaul, connecting rod maintenance and piston assembly replacement projects.

🔹Application Scope ‑

Fit Equipment: Excavators and heavy‑duty construction machinery powered by cumm-ins ISB, ISBE, QSB5.9 diesel engine. ‑ Widely used for machinery repair workshops, equipment refurbishment and engine connecting‑rod system overhaul 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 with shock‑proof inner packing, prevent collision damage 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.