Engine Oil Pump 3937404 for 6BT5.9 Diesel Engine

Keywords: 3937404 engine oil pump, 6BT5.9 oil pump assembly, excavator diesel engine lubrication pump, construction machinery engine lubrication spare parts

Product Overview

Engine Oil Pump Part No.3937404 is a core lubrication component specially matched for 6BT5.9 diesel engines, widely used on excavators and heavy‑duty construction machinery. It delivers pressurized engine oil to each friction component, realizing full‑engine lubrication and cooling. Effectively resolve insufficient oil pressure, abnormal engine noise and component wear caused by internal damage or gear wear of original oil pump. Every oil pump has passed strict oil pressure and performance testing before export carton packaging and delivery.

Detailed Specifications

Key Features & Advantages

• High‑strength cast housing and precision gear set, excellent wear‑resistance and pressure‑bearing performance under heavy‑duty working conditions.
• Precise gear clearance machining, stable oil output flow and consistent lubrication pressure for the whole engine.
• Effectively eliminate low oil pressure, engine abnormal knocking and accelerated parts abrasion caused by worn or failed original oil pump.
• Strict assembly tolerance control, reduce internal leakage, guarantee reliable long‑time continuous operation.
• Perfect fit for 6BT5.9 engine maintenance and overhaul projects.
• Stable interchangeability, can directly replace original OEM spare parts.

Application Scope

Fit Equipment: Excavators and other heavy‑duty construction machinery equipped with 6BT5.9 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 and scratch 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.