QSL9 Full Gasket Kit 4089759 4089978 4089979 for Cummins Engine Repair Parts Set

Product Details

Product Overview

This comprehensive Full Gasket Kit is specifically designed for the Cummins QSL9 diesel engine, a powerhouse commonly found in heavy-duty machinery. Identified by key OEM part numbers 4089759, 4089978, and 4089979, this kit contains all necessary gaskets and seals required for a complete engine overhaul or top-end repair.

Manufactured to meet OEM size specifications, this gasket set ensures a precise fit and reliable sealing performance. It is a critical component for restoring compression, preventing fluid leaks, and maintaining the operational integrity of your Cummins engine. Whether you are maintaining an excavator, truck, or industrial generator, this kit provides the essential components for a successful rebuild.

We source these kits from established manufacturing facilities in Guangdong and Guizhou, China, ensuring a balance of competitive pricing and quality production standards.

Key Features & Benefits

• Complete Overhaul Solution: Includes every gasket and seal needed for a full engine rebuild, eliminating the need to source individual components and saving valuable procurement time.
• OEM-Spec Dimensions: Manufactured to the exact OEM size specifications (4089759, 4089978, 4089979), ensuring a precise, leak-free fit on your QSL9 engine.
• High-Performance Materials: Constructed from multi-layer steel (MLS) and high-density fiber materials designed to withstand high compression, extreme temperatures, and thermal cycling in turbocharged diesel engines.
• Reliable Sealing Performance: Delivers consistent clamping force and superior sealing against oil, coolant, and combustion gases, maximizing engine efficiency and power output.
• Cost-Effective Repair: Offers a significant cost advantage compared to sourcing individual OEM gaskets, providing a budget-friendly solution for fleet maintenance and repair shops.
• Rigorous Quality Control: Each kit undergoes outgoing inspection and machinery test reporting to verify dimensional accuracy and material integrity before shipment.

Technical Specifications

OEM Cross-Reference

This Full Gasket Kit is a direct replacement for the following genuine Cummins OEM part numbers:

• 4089759 (Primary Kit Number)
• 4089978 (Alternative Kit Number)
• 4089979 (Alternative Kit Number)

Please verify your engine serial number and existing gasket kit part number to ensure compatibility before ordering.

Compatibility

This gasket kit is specifically designed for the Cummins QSL9 diesel engine platform. It is commonly used for repair and maintenance in the following applications:

• Construction: Excavators, Bulldozers, Loaders
• Material Handling: Forklifts
• Commercial Vehicles: Trucks, Buses
• Industrial/Agricultural: Generator Sets, Agricultural Machinery

Note: While the QSL9 is used across many brands of equipment, we recommend confirming your specific engine model (QSL9) and the part number of your current gasket kit to ensure a correct fit.

Global Supply & Distribution

We offer worldwide shipping to support international B2B buyers in the heavy equipment and diesel engine repair sectors. Our logistics network ensures fast and reliable delivery to major industrial centers across:

• North America: USA, Canada, Mexico
• Europe: Germany, UK, Netherlands, France
• Asia-Pacific: Australia, Singapore, Japan, Middle East (UAE, Saudi Arabia)
• South America & Africa: Brazil, Chile, South Africa, Nigeria

We have extensive export experience and can handle orders via FOB, CIF, and EXW terms. We ship from our warehouses in Guangdong and Guizhou, ensuring quick turnaround times to major ports like Shenzhen, Guangzhou, and Shanghai.

Quality Assurance

Our manufacturing process adheres to strict quality control standards to ensure every gasket kit meets the demands of heavy-duty diesel engine repair.

• Material Certification: Raw materials are sourced and tested for heat resistance and durability.
• Inspection Process: Each kit undergoes a Video Outgoing Inspection and a Machinery Test Report is provided to validate dimensional accuracy and sealing capability.
• Warranty: We stand behind our product with a 6-month warranty against manufacturing defects in materials and workmanship.

FAQ

Q: How do I confirm this gasket kit fits my specific engine?
A: Verify that your engine model is a Cummins QSL9. Then, cross-reference the part number on your old gasket set with the numbers listed (4089759, 4089978, or 4089979). If your engine is a QSL9, this kit is the standard full gasket set for that platform.

Q: Does this kit include the head gasket and valve stem seals?
A: Yes, as a Full Gasket Kit, it includes all upper and lower engine gaskets and seals. This typically comprises the cylinder head gasket, valve cover gasket, oil pan gasket, intake/exhaust manifold gaskets, front and rear crankshaft seals, and valve stem seals. Please consult the included packing list for a complete inventory.

Q: What is the recommended procedure for installing this gasket kit?
A: Installation should be performed by a qualified diesel mechanic following the Cummins QSL9 service manual. Key steps include thoroughly cleaning all sealing surfaces, applying thread locker to head bolts as specified, and tightening all fasteners to the correct torque specifications in the proper sequence. The head gasket is a non-reusable item and must be replaced with this new one.