Cummins QSL Parts – Turbocharger & Turbo Components

The turbocharger is one of the most critical performance components of the Cummins QSL engine. By compressing incoming air before it enters the combustion chamber, the turbo allows for greater fuel efficiency, more horsepower, and cleaner emissions. Supporting components—such as gaskets, clamps, studs, and mounting hardware—are equally important for ensuring that the turbo operates at peak performance with minimal risk of leaks or failures.

At Diesel Pro Power, we carry a full selection of turbocharger parts for the Cummins QSL, trusted by over 40,000 satisfied customers worldwide. Below you’ll find a complete catalog of turbo mounting hardware, sealing gaskets, clamps, and high-temperature compounds designed specifically for this engine model.

Turbo Mounting Gaskets for Cummins QSL

Turbo mounting gaskets play a vital role in sealing the connection between the turbocharger and the exhaust manifold. A failed gasket can lead to exhaust leaks, reduced turbo efficiency, and even dangerous overheating.

Turbo Mounting Gasket (Water-Cooled Applications)

This gasket is designed specifically for water-cooled turbochargers used on the Cummins QSL. It ensures a tight, leak-free seal under extreme heat and pressure conditions. Because water-cooled turbos operate at higher temperatures, a precision gasket is required to prevent exhaust leaks that could reduce efficiency or cause turbo damage.

Standard Turbo Mounting Gasket

For non-water-cooled applications, this turbo mounting gasket provides reliable sealing between the turbocharger and the manifold. It is built to withstand the vibration, thermal expansion, and constant pressure cycles of a hard-working QSL engine.

Turbo Mounting Studs and Nuts for Cummins QSL

The turbocharger must be mounted with heavy-duty hardware capable of handling intense heat cycles, pressure surges, and vibration.

Turbo Mounting Stud

The turbo mounting stud secures the turbo to the exhaust manifold. Precision-engineered threads ensure a proper torque fit that resists loosening under continuous operation.

Turbo Mounting Nut

Working in conjunction with the mounting stud, the nut holds the turbo firmly in place. A high-strength alloy construction ensures durability and resistance to seizing, even after repeated exposure to heat cycles.

Together, the stud and nut system is crucial for maintaining a stable turbo installation on the Cummins QSL engine.

Turbo Oil Supply Gasket for Cummins QSL

The turbocharger relies on a continuous supply of lubricating oil to prevent bearing wear and overheating. The oil supply gasket ensures a leak-free connection between the oil line and the turbo housing.

• Prevents oil leaks that could cause turbo failure.

• Maintains steady lubrication under high boost pressures.

• Designed for direct fitment to Cummins QSL turbos.

A failed oil gasket can cause rapid turbo damage, so timely replacement is essential.

High-Temperature Jointing Compound for Turbo Installations

In some cases, a high-temperature jointing compound is applied along with gaskets and hardware for maximum sealing reliability.

Hi-Temperature Turbo Jointing Compound

• Suitable for sealing turbo joints exposed to extreme heat.

• Effective for applications reaching 550°C to 760°C.

• Provides a secondary sealing barrier that prevents micro-leaks.

This compound is commonly used when installing or servicing a turbo on the Cummins QSL, ensuring the longest possible life from both gaskets and hardware.

Turbo Clamps for Cummins QSL

Clamps are used in the intake and exhaust system around the turbocharger, particularly for securing filters and piping connections.

Clamp for 4” Diameter Filters

This clamp is designed to hold a 4-inch filter securely in place within the turbo system. Proper clamping is essential for preventing vibration loosening, ensuring airflow integrity, and maintaining peak turbocharger performance.

Importance of Turbocharger Maintenance on Cummins QSL

The QSL turbo system must be kept in optimal condition to ensure engine performance. Regular inspection and replacement of gaskets, studs, and clamps prevent premature turbo failure and maintain efficiency.

Common Signs of Turbo Component Wear

• Exhaust leaks or black soot around turbo mounting points.

• Whistling noises caused by escaping air or gas.

• Oil seepage near turbo oil supply lines.

• Reduced engine power and fuel efficiency.

Replacing small but critical components like gaskets, studs, and clamps at regular intervals can help avoid costly turbocharger replacement.

Why Order Cummins QSL Turbo Parts from Diesel Pro Power?

• Largest online selection of genuine and aftermarket Cummins QSL turbo components.

• Fast worldwide shipping with same-day order processing.

• Trusted by over 40,000 customers in marine, industrial, and power generation sectors.

• Expert support to help you select the right gasket, clamp, or mounting hardware.

When it comes to Cummins QSL engines, every detail matters. From the turbocharger itself to the smallest mounting nut, Diesel Pro Power supplies everything you need to keep your equipment running reliably.