QSL8.9 Cylinder Head Bolt 3960043 for Cummins Diesel Engine Parts

Product Details

Product Overview

This high-quality cylinder head bolt, identified by part number 3960043, is specifically designed for use in Cummins QSL8.9 diesel engines. As a critical fastening component, this bolt ensures the proper clamping force required to maintain a secure seal between the cylinder head and engine block, preventing coolant and compression leaks.

Manufactured to OEM specifications, this cylinder head bolt is a direct replacement part suitable for a wide range of heavy-duty machinery. While commonly applied in excavators, loaders, trucks, and buses, it is essential to verify compatibility with your specific engine serial number for a precise fit. This component is ideal for both routine maintenance and major engine overhauls.

Key Features & Benefits

• OEM Specification: Manufactured to match the exact dimensions and material grade of the original Cummins part, ensuring a perfect fit and reliable performance.
• Durable Construction: Built from high-strength alloy steel to withstand the extreme torque and thermal stress of diesel engine operation.
• Leak Prevention: Provides the necessary clamping force to evenly distribute pressure on the cylinder head gasket, minimizing the risk of head gasket failure.
• Direct Replacement: Designed as a drop-in replacement for the OEM 3960043 bolt, simplifying the installation process for technicians.
• Application Versatility: Suitable for a variety of heavy equipment including excavators, bulldozers, forklifts, trucks, and buses powered by the QSL8.9 engine.
• Rigorous Testing: Each bolt undergoes quality checks to ensure tensile strength and dimensional accuracy before shipment.

Technical Specifications

OEM Cross-Reference

This cylinder head bolt is a direct replacement for the following OEM part numbers. Please verify your specific engine requirements before purchase.

• Cummins OEM: 3960043

Note: This part is designed as an aftermarket replacement. For exact fitment, cross-reference your original part number with the one listed above.

Compatibility

This cylinder head bolt is commonly used for the following engine models and equipment types. Fitment is inferred based on the engine model and should be verified against your specific engine serial number.

• Engine Models: Cummins QSL8.9, QSL9
• Vehicle Applications:
  • Excavators
  • Bulldozers
  • Forklifts
  • Buses
  • Trucks
  • Loaders

Global Supply & Distribution

We offer worldwide shipping capabilities to meet the demands of international B2B buyers. Our distribution network ensures fast and reliable delivery to major industrial centers and ports across the globe.

• Major Markets Served: North America, Europe, Asia-Pacific, Middle East, Africa, and South America.
• Fast Delivery: Efficient logistics to major ports including Los Angeles, Rotterdam, Shanghai, Dubai, and Singapore.
• Export Experience: Our team has extensive experience in international trade compliance, customs documentation, and packaging to ensure safe transit.
• Bulk Orders: We support bulk and wholesale orders for workshops, distributors, and fleet operators.

Quality Assurance

We are committed to providing high-quality parts that meet rigorous standards. Our quality assurance process ensures reliability and performance.

• Manufacturing Standards: Parts are produced in ISO-certified facilities, adhering to strict quality control measures.
• Testing Procedures: Each bolt undergoes dimensional inspection and hardness testing to confirm it meets OEM specifications.
• Inspection Reports: Machinery Test Report and Video Outgoing Inspection are provided upon request to verify product quality before shipment.
• Warranty: All parts come with a 6-month warranty against manufacturing defects.

FAQ

Q: Is this bolt reusable, or should it be replaced during a head gasket job?
A: Cylinder head bolts are typically torque-to-yield (TTY) fasteners. It is highly recommended to replace them with new bolts whenever the cylinder head is removed. Reusing old bolts can lead to insufficient clamping force, resulting in head gasket failure. Always install new bolts for a reliable seal.

Q: How can I confirm this 3960043 bolt fits my specific Cummins engine?
A: This bolt is designed for the Cummins QSL8.9 series. To confirm compatibility, check the engine data plate for the exact engine model and serial number. You can also cross-reference your old bolt’s part number against our listing. If you are unsure, please contact us with your engine details for verification.

Q: What is the correct installation procedure for this cylinder head bolt?
A: Always follow the manufacturer’s service manual for your specific engine. The general process involves cleaning the bolt holes and threads, lightly lubricating the bolt threads and under-head area with engine oil, and tightening in a specific sequence to the correct torque specifications. Using a torque wrench and angle gauge is critical for proper installation. Failure to follow the correct procedure can damage the engine.