Oil Cooler 3975818 For B6.7 QSB6.7 QSL9 ISB6.7 B4.5 QSB5.9 Engine

Keywords: 3975818 oil cooler, B6.7 QSB6.7 engine oil cooler assembly, QSL9 ISB6.7 B4.5 QSB5.9 oil cooling core, excavator diesel engine spare parts, aftermarket replacement oil cooler

Product Overview

Oil Cooler Part No.3975818 is an essential engine lubrication‑system cooling component for B6.7, QSB6.7, QSL9, ISB6.7, B4.5, QSB5.9 diesel engines applied on excavators and heavy‑duty machinery. It exchanges heat between engine oil and coolant, effectively control lubricating‑oil working temperature, prevent oil high‑temperature deterioration, and protect crankshaft, bearings and other moving parts. This replacement oil cooler resolves typical failures including oil‑coolant mixing, oil temperature over‑rising, internal blockage and external leakage caused by original cooler core corrosion, fin damage and sealing failure. Each oil cooler passes strict pressure‑resistance leakage test and appearance inspection before shipment.

Detailed Specifications

Key Features & Advantages

• High‑quality stacked cooling core structure, efficient heat‑exchange performance, keep engine oil within normal operating temperature range.
• Strict welding and sealing craft, good anti‑corrosion capability, avoid cross‑leakage between engine oil and coolant.
• Precise mounting hole position, perfectly match engine installation position, no extra modification required.
• Effectively eliminate engine over‑high oil temperature, oil emulsification and cooler leakage caused by damaged original oil cooler.
• Rigorous pressure‑leakage test before delivery, stable performance for long‑time heavy‑duty construction site operation.

Application Scope

Fit Equipment: Excavators and heavy‑duty machinery equipped with B6.7 / QSB6.7 / QSL9 / ISB6.7 / B4.5 / QSB5.9 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 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.