Cylinder Head 3969725 For QSC ISC QSL ISL Diesel Engine

Keywords: 3969725 cylinder head, QSC ISC engine cylinder head assembly, QSL ISL diesel engine cylinder head, excavator diesel engine spare parts, aftermarket replacement cylinder head

Product Overview

Cylinder Head Part No.3969725 is a core upper‑engine component for QSC, ISC, QSL, ISL diesel engines fitted on excavators and heavy‑duty construction machinery. It accommodates valve assemblies, injector mounting positions and cooling‑water passages, completing air intake, exhaust, fuel injection and heat dissipation for each cylinder. This replacement cylinder head resolves common malfunctions including water channel crack, valve seat damage, thread hole slipping, combustion‑surface deformation, water‑oil mixing and engine power decline caused by original cylinder‑head long‑time high‑temperature heavy‑load operation. Every cylinder head passes strict dimensional inspection, water pressure leakage test and thread checking before shipment.

Detailed Specifications

Key Features & Advantages

• High‑strength cast‑iron casting body, excellent high‑temperature resistance and anti‑cracking performance under heavy‑duty working conditions.
• Precisely processed valve seats, valve guides and water‑cooling passages, guarantee stable combustion chamber working environment.
• Accurate thread hole positions and mounting dimensions, perfect matching for engine block, no modification required during installation.
• Effectively solve engine faults such as coolant leakage, oil‑water mixing, insufficient power and unstable combustion caused by cracked or deformed original cylinder head.
• Complete inspection and hydraulic pressure leak test before delivery, reliable performance for long‑term engineering equipment operation.

Application Scope

Fit Equipment: Excavators and heavy‑duty machinery equipped with QSC / ISC / QSL / ISL 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.