Thermostat 3954195 for QSB5.9 Engine

Keywords: 3954195 engine thermostat, QSB5.9 thermostat, excavator diesel engine thermostat, construction machinery cooling system spare parts, heavy‑duty engine temperature control replacement parts

🔹Product Overview

Thermostat Part No.3954195 is a core temperature‑control component for QSB5.9 diesel engines, widely applied on excavators, trucks, generator sets and various heavy‑duty construction machinery. It automatically adjusts engine coolant circulation route to maintain the optimal working temperature of engine cooling system. This thermostat effectively solves common problems such as engine overheating, slow warm‑up, high fuel consumption and abnormal temperature fluctuation caused by aging or failure of original thermostat. Every thermostat passes strict opening‑temperature performance testing before carton packaging and shipment.

🔹Detailed Specifications

🔹Key Features & Advantages

• High‑quality thermal‑sensitive wax‑core material, stable opening‑and‑closing response, reliable temperature‑control performance under variable heavy‑duty working conditions.
• Precise calibration of opening temperature, realize fast engine warm‑up and reasonable coolant circulation, keep engine running within ideal temperature range.
• Effectively resolve engine overheating, insufficient warming‑up, high oil consumption and cooling‑system faults resulting from damaged original thermostat.
• Fine sealing structure, prevent coolant leakage, reduce extra maintenance cost of cooling system.
• Perfect fit for QSB5.9 engine cooling system overhaul and maintenance projects.
• Good interchangeability, direct replacement for original spare part.

🔹Application Scope ‑

Fit Equipment: Excavators, trucks, generator sets and heavy‑duty machinery equipped with QSB5.9 diesel engine ‑ Widely used for machinery repair shops, engine rebuilding factories and heavy‑duty equipment overhaul services.

🔹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 ‑

Export carton with shock‑proof protective packaging, avoid 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.