Cummins QSK 19 Turbo - Aftermarket

Cummins QSK19 Engine Parts – Turbo Section

Diesel Pro Power offers a full range of high-quality aftermarket turbocharger components for the Cummins QSK19 engine platform. Whether you're performing a full turbo rebuild or simply replacing mounting hardware, we supply durable, high-performance parts designed for dependable use in industrial and marine environments. All parts in this section are engineered for compatibility with the QSK19, and support both single and dual turbo configurations.

Overview of Turbocharger Components for Cummins QSK19

The turbocharger system on the QSK19 plays a vital role in delivering efficient air intake and exhaust management for optimal engine performance. Over time, even the most robust turbos and related hardware experience wear due to high thermal and pressure cycling. We provide key replacement items to help you restore peak boost, minimize exhaust backpressure, and improve combustion across the board.

Turbo Mounting Gaskets for Cummins QSK19

Turbo mounting gaskets form the critical seal between the turbocharger and the exhaust manifold or engine block. High exhaust temperatures and vibration can deteriorate these seals, leading to power loss and efficiency issues.

Turbo Mounting Gasket – Standard Configuration

This aftermarket turbo mounting gasket is designed for a direct fit on standard Cummins QSK19 applications. Made with durable heat-resistant materials, it ensures a reliable seal that can withstand extreme thermal loads.

Features:

• Designed for high-temperature resistance
  
  

• Prevents exhaust gas leaks at turbo flange
  
  

• Simple replacement during turbo installation
  
  

Ideal Use: Routine turbo maintenance, new turbo installs, or resolving exhaust leaks.

Turbo Mounting Gasket – For Water-Cooled Turbo Applications

This gasket is made for QSK19 engines equipped with water-cooled turbochargers. The design accounts for added coolant jacket clearances while still ensuring a tight, long-lasting seal around exhaust passages.

Features:

• Supports water-cooled turbocharger configurations
  
  

• Reinforced gasket body for high-temp and fluid exposure
  
  

• OEM-grade sealing with aftermarket affordability
  
  

Use Cases: When replacing a water-cooled turbocharger or resealing a leaking interface.

Exhaust Manifold Outlet Gaskets for Cummins QSK19

Exhaust manifold outlet gaskets are critical for sealing the junction between the turbo outlet and the exhaust manifold, or in some cases, between two manifold sections in multi-piece setups.

Exhaust Outlet Connection Gasket

This gasket provides a secure, leak-free seal for the exhaust outlet path on the Cummins QSK19 engine. It is constructed from composite materials capable of handling sustained heat and pressure without degradation.

Key Benefits:

• Prevents exhaust gas escape at critical junctions
  
  

• Maintains turbo efficiency and backpressure balance
  
  

• Easy to install during manifold or turbo replacement
  
  

Best Used During: Exhaust manifold servicing, turbocharger change-out, or anytime exhaust leaks are detected downstream of the turbo.

Common Turbo Replacement Scenarios for the QSK19

Replacing gaskets alone is sometimes not enough. Many operators choose to refresh their turbo system when performance dips or after an overhaul. Below are common triggers for replacement:

• Visible exhaust leaks or soot buildup near turbo flanges
  
  

• Drop in boost pressure or engine responsiveness
  
  

• Whistling or screeching noises from the turbo area
  
  

• Exhaust backpressure alarms in marine applications
  
  

• Routine turbo overhaul intervals in commercial fleets
  
  

If you're experiencing any of these issues, it's wise to inspect your turbo system and related gaskets.

Additional Turbo Parts Available for the Cummins QSK19

We also stock additional turbo-related components to support a full-service job. These parts are available upon request or in our broader QSK19 parts catalog:

Turbocharger Mounting Studs & Nuts

Durable hardware sets for securing your turbocharger to the exhaust manifold or adapter flange. These high-temperature studs resist thermal fatigue and ensure a vibration-free hold.

Turbo Oil Supply Lines

We carry aftermarket oil feed lines that supply proper lubrication to the turbo bearing assembly. These are essential for turbo longevity and should be replaced during every turbo swap.

Turbo Drain Flanges & Gaskets

Designed for oil return lines from the turbo to the engine block. A leaking drain flange can lead to oil starvation or engine messes—replace these when servicing the turbo.

Turbo Elbows and V-Band Clamps

These exhaust elbows help route spent gases from the turbo outlet. Clamps are available in stainless steel and are designed to withstand QSK19 exhaust gas temperatures under full load.

Why Diesel Pro Power for QSK19 Turbo Parts?

With over 40,000 satisfied customers worldwide, Diesel Pro Power is a trusted name in the marine and industrial diesel parts sector. Our aftermarket QSK19 turbo parts are quality-verified and backed by industry-leading fulfillment and support.

What sets our turbo parts apart:

• Precision-engineered aftermarket components
  
  

• In-stock inventory for fast global shipping
  
  

• Personalized customer support
  
  

• Competitive pricing without sacrificing performance
  
  

Engine Applications for QSK19 Turbo Systems

The Cummins QSK19 engine is widely used in high-horsepower environments including:

• Marine propulsion and auxiliary power
  
  

• Mining haul trucks and excavators
  
  

• Oilfield power modules
  
  

• Large industrial gensets
  
  

• Rail and locomotive support systems
  
  

All these applications demand consistent turbocharger performance. Our turbo gaskets and components are built to handle the operating conditions of these critical use cases.

Maintenance Tips for QSK19 Turbo Components

To ensure long life and optimal efficiency of your turbo system, consider the following service tips:

• Always replace all gaskets when installing a new or rebuilt turbocharger
  
  

• Inspect exhaust manifold flanges for warping before reinstalling
  
  

• Use only heat-rated studs and fasteners when reassembling the turbo system
  
  

• Prime the turbo with oil before first startup
  
  

• Ensure proper coolant flow to water-cooled turbo housings
  
  

• Confirm that V-band clamps are torqued evenly to avoid flange distortion
  
  

Proper care during installation is just as important as the quality of the parts used. Diesel Pro Power’s components are designed to integrate seamlessly when best practices are followed.