3937479 Exhaust Gasket for Cummins QSL9 Diesel Engine Overhaul Parts Kit

Product Details

Product Overview

This premium exhaust gasket, part number 3937479, is a critical component designed specifically for the Cummins QSL9 diesel engine. As a key part of a comprehensive overhaul parts kit, this gasket ensures a proper seal between the exhaust manifold and the cylinder head, preventing exhaust gas leaks that can lead to power loss, increased emissions, and engine damage.

Manufactured to meet OEM size specifications, this gasket is engineered for direct replacement in QSL9 engines commonly used across a wide range of heavy-duty applications. Whether you are performing a routine maintenance overhaul or a complete engine rebuild, this 3937479 exhaust gasket is essential for restoring engine performance and efficiency.

This component is sourced from, a trusted supplier in Guangdong, China, known for delivering reliable aftermarket solutions for industrial diesel engines.

Key Features & Benefits

• Precision Fitment: Designed to OEM size standards (3937479) for a direct, hassle-free installation on Cummins QSL9 engines, reducing downtime during overhaul.
• High-Temperature Resistance: Constructed from durable materials capable of withstanding extreme exhaust temperatures, ensuring long service life and preventing premature failure.
• Leak-Proof Seal: Provides a secure, tight seal to eliminate exhaust gas leaks, which protects turbocharger performance and maintains optimal backpressure.
• Comprehensive Overhaul Support: An integral part of a complete engine overhaul kit, ensuring all sealing points are addressed during rebuilds for maximum reliability.
• Rigorous Quality Control: Backed by a 6-month warranty and supplied with a machinery test report, offering confidence in part integrity and performance.
• Versatile Application: Suitable for QSL9 engines in demanding sectors including construction, agriculture, marine, genset, and material handling equipment.

Technical Specifications

OEM Cross-Reference

This exhaust gasket is directly cross-referenced to the following OEM part number:

• Cummins OEM: 3937479

Note: This part is designed as a direct replacement for the original Cummins 3937479 gasket. For verification, please consult your engine’s parts manual using this number.

Compatibility

This exhaust gasket is specifically designed for the Cummins QSL9 diesel engine platform. It is commonly used for the following heavy equipment applications:

• Construction: Excavators, wheel loaders, bulldozers
• Industrial: Compressors, pumps, generator sets (gensets)
• Agriculture: Tractors, harvesters
• Marine: Propulsion engines, auxiliary power units
• Handling: Forklifts, telehandlers, material handlers

Fitment is inferred based on engine model. Always verify compatibility with your specific engine serial number and application before purchase.

Global Supply & Distribution

We serve a global network of B2B clients, including parts distributors, fleet operators, and equipment dealers. Our logistics capabilities ensure efficient delivery to major markets:

• North America: Rapid shipping to ports in Los Angeles, Houston, and New York, with inland distribution to industrial hubs.
• Europe: Reliable delivery to Rotterdam, Hamburg, and Antwerp for distribution across the EU.
• Asia-Pacific: Direct export from Guangdong, China, to Singapore, Dubai, and major Australian ports (Sydney, Melbourne).
• Middle East & Africa: Regular shipments to Jebel Ali (Dubai), Dammam, and Durban.

We offer flexible shipping options including air freight for urgent orders and sea freight for bulk purchases. Our export team manages all customs documentation and international trade compliance.

Quality Assurance

Every 3937479 exhaust gasket is manufactured under strict quality control standards. Key quality measures include:

• Machinery Test Report: Provided with each shipment to verify dimensional accuracy and material composition.
• Outgoing Video Inspection: Available upon request to provide visual confirmation of product condition before shipping.
• Warranty: All parts are backed by a 6-month warranty against manufacturing defects.
• OEM Service: We offer custom OEM production services for clients requiring specific branding or packaging.

FAQ

Q: Is this exhaust gasket a direct replacement for the original Cummins part?
A: Yes, this gasket (part number 3937479) is manufactured to OEM size specifications for the Cummins QSL9 engine. It is designed as a direct replacement for the original Cummins gasket. We recommend verifying your engine’s serial number to ensure compatibility with the QSL9 model.

Q: What are the signs that my exhaust gasket needs replacement?
A: Common symptoms include visible exhaust smoke, a hissing or ticking noise from the exhaust manifold area, reduced engine power, and increased fuel consumption. During an engine overhaul, it is standard practice to replace all gaskets, including the exhaust gasket, to prevent future leaks and ensure a proper seal.

Q: What is the recommended installation procedure for this gasket?
A: Installation should be performed by a qualified diesel mechanic. Ensure the mating surfaces on the cylinder head and exhaust manifold are clean and free of old gasket material. Do not apply additional sealant unless specified by the engine manufacturer. Tighten the manifold bolts to the torque specifications provided in the Cummins QSL9 service manual to prevent warping or gasket failure.