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Shacman Truck Cummins QSM11 ISM11 Diesel Engine Oil Pump 4003950Sinotruk Howo Shacman Weichai for WD615 WD618 Engine Parts Truck Flywheel Assembly Steel New
  • Shacman Truck Cummins QSM11 ISM11 Diesel Engine Oil Pump 4003950Sinotruk Howo Shacman Weichai for WD615 WD618 Engine Parts Truck Flywheel Assembly Steel NewShacman Truck Cummins QSM11 ISM11 Diesel Engine Oil Pump 4003950Sinotruk Howo Shacman Weichai for WD615 WD618 Engine Parts Truck Flywheel Assembly Steel New
  • Shacman Truck Cummins QSM11 ISM11 Diesel Engine Oil Pump 4003950Sinotruk Howo Shacman Weichai for WD615 WD618 Engine Parts Truck Flywheel Assembly Steel NewShacman Truck Cummins QSM11 ISM11 Diesel Engine Oil Pump 4003950Sinotruk Howo Shacman Weichai for WD615 WD618 Engine Parts Truck Flywheel Assembly Steel New
  • Shacman Truck Cummins QSM11 ISM11 Diesel Engine Oil Pump 4003950Sinotruk Howo Shacman Weichai for WD615 WD618 Engine Parts Truck Flywheel Assembly Steel NewShacman Truck Cummins QSM11 ISM11 Diesel Engine Oil Pump 4003950Sinotruk Howo Shacman Weichai for WD615 WD618 Engine Parts Truck Flywheel Assembly Steel New
  • Shacman Truck Cummins QSM11 ISM11 Diesel Engine Oil Pump 4003950Sinotruk Howo Shacman Weichai for WD615 WD618 Engine Parts Truck Flywheel Assembly Steel NewShacman Truck Cummins QSM11 ISM11 Diesel Engine Oil Pump 4003950Sinotruk Howo Shacman Weichai for WD615 WD618 Engine Parts Truck Flywheel Assembly Steel New

Shacman Truck Cummins QSM11 ISM11 Diesel Engine Oil Pump 4003950Sinotruk Howo Shacman Weichai for WD615 WD618 Engine Parts Truck Flywheel Assembly Steel New

Model:4003950
Looking for a reliable 4003950 engine oil pump for Cummins QSM11 or ISM11 diesel engines? We offer premium replacement auto engine oil pumps designed to meet original equipment specifications, ensuring optimal oil pressure and lubrication for Shacman heavy-duty commercial trucks.


The 4003950 Engine Oil Pump is a vital component of the engine lubrication system, engineered to pump oil continuously throughout the engine block, bearings, and valvetrain. Proper lubrication reduces friction, prevents overheating, and protects critical moving parts under high load conditions.

Manufactured from high-strength steel, this oil pump delivers consistent hydraulic pressure and flow rate, making it an ideal choice for engine overhauls, routine maintenance, or worn part replacements in severe-duty industrial applications.

Technical Specifications

Parameter Specification
Product Name Auto Engine Oil Pump
Part Number or OE NO. 4003950
Engine Code Cummins QSM11, ISM11
Compatible Truck Model Shacman Truck Cummins Series
Material High-Grade Steel
Quality Level High Quality
Size Standard Original Size (STD)
Warranty 6 Months
Place of Origin Shandong, China
Minimum Order Quantity (MOQ) 1 Piece
Sample Availability Available upon request
Payment Terms T/T
Delivery Time 7 to 15 Days

Key Features and Benefits

  • Precise Hydraulic Flow: Optimized inner gear structure ensures stable oil pressure and maximum lubricating efficiency across all engine speeds.

  • Heavy Duty Steel Construction: Made of durable, wear-resistant steel to withstand high thermal pressure and continuous heavy engine loads.

  • Direct OEM Replacement: Fully compatible with OE number 4003950, enabling seamless plug-and-play installation without mechanical modifications.

  • Extended Engine Service Life: Prevents premature bearing wear, friction buildup, and severe engine damage caused by oil starvation.

Compatible Vehicle and Engine Models

This Cummins QSM11 ISM11 oil pump 4003950 is widely used in heavy-duty commercial trucks, construction machinery, and industrial equipment, including:

  • Shacman Truck Series: Shacman F2000, F3000, X3000 heavy trucks powered by Cummins diesel engines.

  • Engine Models: Cummins QSM11, ISM11, M11 electronic diesel engines.

Packaging and Shipping Details

  • Selling Unit: Single item

  • Package Type: Standard durable carton or export reinforced box

  • Single Package Size: 26 x 15 x 20 cm

  • Single Gross Weight: 5.0 kg

  • Shipping Options: Express courier (DHL, FedEx, EMS), air freight, or sea freight based on order volume.

Why Choose Us

  • Complete Parts Supply: Professional supplier specializing in genuine and high-grade aftermarket parts for Shacman and Cummins commercial engines.

  • Fast Order Dispatch: Large inventory guarantees prompt order delivery within 7 to 15 business days.

  • Strict Inspection: Every oil pump undergoes rigorous dimensional checks and oil pressure testing prior to shipment.



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