QSM11 Rocker Arm 49003913 for Cummins Engine Parts Excavator Truck

Product Details

Product Overview

This high-quality rocker arm, part number 49003913, is specifically designed for the Cummins QSM11 diesel engine. As a critical component of the valve train, the rocker arm ensures precise timing of intake and exhaust valve operation, directly impacting engine performance, fuel efficiency, and longevity.

Manufactured to OEM specifications, this 49003913 rocker arm is a direct replacement for the original part. It is commonly used in heavy-duty applications where the QSM11 engine is found, including excavators, bulldozers, trucks, buses, loaders, and forklifts. This component is essential for maintaining the reliable operation of your Cummins-powered equipment.

Key Features & Benefits

• OEM Specification: Manufactured to match the exact dimensions and material composition of the original Cummins part, guaranteeing a perfect fit and reliable function.
• Precision Engineering: Ensures accurate valve timing and lift, optimizing engine power output and fuel economy while reducing emissions.
• Durable Construction: Built from high-strength materials to withstand the extreme heat, pressure, and cyclic loading within the QSM11 engine, providing a long service life.
• Direct Replacement: Easy to install with no modifications required. Simply replace the worn or damaged rocker arm to restore engine performance.
• Stringent Quality Control: Each rocker arm undergoes rigorous inspection, including dimensional checks and material verification, to ensure it meets our high standards.
• Cost-Effective Solution: Offers a significant cost saving compared to purchasing a complete rocker arm assembly or using a genuine OEM part from the dealership.

Technical Specifications

OEM Cross-Reference

This rocker arm carries the part number 49003913. It is a direct replacement for the original Cummins part. Please verify your existing part number against this number to ensure compatibility. While we list the primary number, it may also be cross-referenced with other service or remanufacturing part numbers for the QSM11 engine.

• Primary OEM Number: 49003913
• Compatible With: Cummins QSM11 Rocker Arm

Compatibility

This rocker arm is specifically designed for the Cummins QSM11 diesel engine. It is commonly used for the following equipment applications:

• Excavators
• Bulldozers
• Trucks
• Buses
• Loaders
• Forklifts
• Other heavy industrial machinery powered by the QSM11 engine

Note: Always verify the engine model (QSM11) and the specific part number (49003913) on your existing rocker arm before purchasing to ensure fitment.

Global Supply & Distribution

We are a dedicated supplier of heavy-duty engine parts with a robust global distribution network. We serve a wide range of international markets, including North America, South America, Europe, Southeast Asia, the Middle East, and Africa.

Our inventory is strategically managed to ensure fast and reliable shipping to major ports and industrial centers worldwide. We offer flexible logistics solutions, including air freight, sea freight, and express courier services, to meet your urgent requirements. Our team has extensive experience in international trade and customs compliance, ensuring a smooth and hassle-free purchasing process for B2B buyers globally.

Quality Assurance

We are committed to providing high-quality replacement parts that you can trust. Our manufacturing process adheres to strict quality control standards. Each 49003913 rocker arm is produced in an ISO-certified facility and undergoes a multi-step inspection process.

• Material Analysis: Raw materials are tested to ensure they meet required hardness and tensile strength specifications.
• Dimensional Inspection: Critical dimensions are verified using precision measuring tools to guarantee an exact fit with OEM specifications.
• Visual Inspection: Each part is visually inspected for surface defects, cracks, or imperfections.
• Warranty: This product is backed by a 6-month warranty against manufacturing defects, providing you with peace of mind.
• Testing: Machinery test reports and outgoing inspection videos are available upon request to verify quality.

FAQ

Q: How do I know if this rocker arm (49003913) is the right one for my engine?
A: First, confirm your engine model is a Cummins QSM11. Then, visually inspect your existing rocker arm for its part number, which should be stamped or printed on it. If the number is 49003913, this is the correct direct replacement. If you are unsure, please contact us with your engine serial number or the part number of the rocker arm you are removing.

Q: What is the typical installation procedure for a rocker arm on a QSM11 engine?
A: Replacing a rocker arm requires mechanical skill. The general steps involve removing the valve cover, loosening the rocker arm shaft bolts, and carefully lifting out the old rocker arm assembly. Before installing the new arm, you must ensure the engine is at top dead center (TDC) for the cylinder you are working on. The new rocker arm should be installed and torqued to the manufacturer’s specifications (consult a Cummins service manual for exact torque values and sequence). It is crucial to properly adjust the valve lash after installation to ensure correct engine timing and prevent damage.

Q: Can a worn rocker arm cause other engine problems?
A: Yes. A worn or damaged rocker arm can cause a ticking noise, reduced engine power, poor fuel economy, and increased emissions. If left unattended, it can lead to more severe issues such as bent pushrods, worn camshaft lobes, or even valve-to-piston contact, which can result in catastrophic engine failure. It is recommended to replace a worn rocker arm immediately and inspect the related valve train components (pushrods, bridges, and camshaft) for any signs of damage.