Cummins QSL Exhaust System Components

The exhaust system of the Cummins QSL engine plays a critical role in overall performance, efficiency, and emissions control. From turbo mounting gaskets to mufflers and manifold insulation, each part is designed to withstand high temperatures and pressures while ensuring gases are expelled safely and efficiently. At Diesel Pro Power, we support over 40,000 satisfied customers with high-quality exhaust components for the QSL series and related Cummins engines.

Turbo Mounting Gaskets for Cummins QSL

The turbocharger is a vital part of the QSL engine, forcing additional air into the combustion chamber for more efficient fuel burn. To keep this system sealed and performing at peak efficiency, a turbo mounting gasket is required.

• Designed specifically for water-cooled turbos.

• Prevents exhaust gas leaks at the turbocharger mounting point.

• Helps maintain boost pressure and reduce energy loss.

• Essential for avoiding hot gas leakage that can damage surrounding components.

Bolts for Exhaust Manifold & Mounting Applications

High-strength Cummins exhaust bolts are used across multiple QSL applications, including:

• Exhaust manifold mounting for marine engines.

• Alternator bracket attachment.

• Refrigerant compressor mounting.

These bolts are designed to endure repeated heating and cooling cycles without loosening or losing strength. Using genuine-spec bolts ensures proper clamping force and helps prevent warping of the exhaust manifold.

Exhaust Manifold Gaskets for Cummins QSL

The exhaust manifold gasket ensures a leak-free connection between the cylinder head and the exhaust manifold.

• Built to handle extreme heat and pressure.

• Maintains sealing integrity over long service life.

• Prevents exhaust leaks that can lead to power loss or emissions failures.

Closely related is the exhaust manifold outlet connection gasket, which seals the junction between the manifold and the exhaust pipe, keeping the system airtight.

Intake Manifold Cover Gaskets

While part of the air intake system, the intake manifold cover gasket is also tied to exhaust flow because QSL engines often use air heaters. These gaskets provide:

• Reliable sealing for manifolds with integrated air heaters.

• Improved cold start performance and emissions compliance.

• Reduced air leakage to maintain engine efficiency.

EGR Valve Gaskets for Cummins QSL

Exhaust Gas Recirculation (EGR) is an important part of emissions control on modern Cummins engines. The EGR valve gasket:

• Seals the connection between the EGR valve and engine components.

• Prevents gas leakage during exhaust recirculation.

• Supports compliance with emissions regulations by ensuring correct flow.

Exhaust System Insulation

Exhaust manifolds reach extremely high temperatures during operation. Insulation tape helps protect surrounding components, reduce heat transfer, and improve safety.

• Available in 3" and 4" widths.

• Supplied in 100-foot rolls for full manifold coverage.

• 1/8" thick fiberglass insulation designed for industrial and marine engines.

Proper insulation reduces the risk of heat damage to wiring, hoses, and nearby engine room equipment.

Flanges & Gaskets for Exhaust Connections

Exhaust flanges and flange gaskets provide secure connections between the exhaust manifold, piping, and mufflers.

• 4" inside diameter flange for industrial applications.

• Matching gaskets designed to withstand vibration, heat, and gas pressure.

• Ensure tight, reliable joints in marine and stationary installations.

Mufflers for Cummins Industrial Applications

For industrial and marine installations, mufflers are essential in reducing exhaust noise while maintaining gas flow efficiency.

• 4" inlet and outlet with National Pipe Thread compatibility.

• Designed for heavy-duty diesel engines like the Cummins QSL.

• Available with precise dimensional specifications for easy integration.

Mufflers are particularly valuable in enclosed engine rooms where noise control is critical for crew safety and comfort.

Exhaust Muffler Caps

Muffler caps help protect the system when the engine is not in use. Available in multiple diameters (3", 3.5", 4.5", 5"), these caps:

• Prevent debris, water, and dirt from entering the exhaust.

• Extend the life of the muffler and exhaust piping.

• Designed to fit standard industrial muffler outlets.

Monitoring & Gauges for Exhaust System Performance

To ensure the QSL engine’s exhaust system is operating correctly, mechanical and electrical gauges are available for integration into your system.

• Standard mechanical gauges for direct readings.

• Mechanical gauges with alarms for early warning.

• Electrical gauges compatible with 12- and 24-volt systems.

Monitoring exhaust temperature and pressure helps prevent overheating and identifies restrictions before they cause costly damage.

Why Choose Diesel Pro Power for Cummins QSL Exhaust Components?

• Over 40,000 satisfied customers worldwide.

• Exhaust system components tested for durability in marine and industrial environments.

• Fast worldwide shipping with stock ready to ship.

• Bilingual customer service team for global support.