Description
Product Overview
Part Name: Diesel Engine Oil Pump
Part Numbers: 4939588, 3947308, 5291050
Vehicle Compatibility: Cummins Engines: ISB and QSB series (2000–2020); widely used in trucks, buses, agricultural tractors, excavators, generators, and construction machinery requiring reliable lubrication systems
Configuration: OEM-style heavy-duty oil pump engineered for Cummins ISB/QSB engines, ensuring consistent oil pressure and circulation under demanding duty cycles
Function: Supplies engine oil to bearings, pistons, and camshaft, reducing friction, controlling heat, and extending engine durability
Technical Specifications
Type: Heavy-duty mechanical gear oil pump
Material: Cast iron housing with precision-machined steel gears
Application: Fits Cummins ISB and QSB series diesel engines manufactured between 2000–2020 using pump references 4939588, 3947308, and 5291050
Installation: Direct-fit OEM-style replacement; installs with factory bolts and integrates into Cummins lubrication system
Service Interval: Replace when oil pressure drops, leakage or noise occurs, or during scheduled engine rebuilds
Delivery & Availability
Stock Options: High-quality oil pumps available for Cummins ISB/QSB engines
Delivery Time: 3–7 days internationally
Payment & Security
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