Cummins QSK 19 Engine Parts - Gasket Section

Cummins QSK19 Gasket Catalog – Industrial & Marine Grade Sealing Components

At Diesel Pro Power, we provide high-quality Cummins QSK19 engine gaskets and sealing solutions tailored for heavy-duty applications. From marine propulsion systems to industrial generators and mining trucks, the QSK19 engine demands precision sealing to maintain long-term performance under high stress, high temperature, and high load conditions.

Our extensive catalog of gaskets includes complete upper and lower sets, individual component gaskets, injector installation kits, turbo mounting seals, gear housing covers, and premium sealing adhesives. Backed by our reputation for reliability and service, our gasket products support over 40,000 customers globally.

Engine Background: Cummins QSK19

The Cummins QSK19 is a high-horsepower inline six-cylinder diesel engine known for delivering reliable performance in the most extreme environments. Built with dual turbocharging and advanced high-pressure fuel injection systems, this engine requires precise sealing at all major contact points—cylinder head, oil cooler, rocker housing, fuel components, and more.

Key Attributes of the QSK19 Engine:

• Displacement: 19 liters
  
  

• Configuration: Inline 6-cylinder
  
  

• Common Rail Fuel System
  
  

• Dual or single turbocharged
  
  

• High-load continuous-duty operation
  
  

Primary Applications:

• Marine (crew boats, tugboats, ferries)
  
  

• Mining haul trucks and loaders
  
  

• Industrial power generation
  
  

• Locomotive auxiliary systems
  
  

Complete Gasket Set Options

Upper Gasket Set for QSK19 Engines

This comprehensive upper-end gasket set includes all necessary components for reassembling the cylinder head area. It's ideal for top-end overhauls, especially after cylinder head servicing or injector replacement.

What’s Included:

• Cylinder head gaskets (multi-layer steel design)
  
  

• Valve cover gaskets
  
  

• Rocker housing gaskets
  
  

• Intake and exhaust manifold gaskets
  
  

• Injector seals and copper washers
  
  

• Turbocharger mounting gaskets
  
  

Designed for thermal endurance, oil resistance, and long-term sealing integrity, these gaskets are compatible with high-performance marine and industrial QSK19 configurations.

Lower Gasket Set for QSK19 Engines

A full bottom-end sealing solution that includes all major lower engine gaskets needed for a rebuild or crankcase service.

Contents May Include:

• Oil pan upper and lower gaskets
  
  

• Crankshaft front and rear main seals
  
  

• Oil cooler housing gaskets and O-rings
  
  

• Hand hole cover gaskets
  
  

• Gear train housing seals
  
  

Each component is engineered to withstand oil pressure, mechanical stress, and frequent thermal cycling typical in industrial and marine engine environments.

Cylinder Head Sealing Components

QSK19 Cylinder Head Gasket

The head gasket forms the primary combustion seal between the cylinder block and cylinder head. Our replacement gaskets offer high clamping load resistance, precision bore alignment, and superior thermal stability.

Highlights:

• High-pressure sealing for turbocharged applications
  
  

• Supports marine fuel mapping and high-load usage
  
  

• Typically, six gaskets are required for a complete engine service
  
  

Use with torque specifications and torque angle tightening procedures recommended by the engine manufacturer to ensure proper installation.

Fuel System Gaskets

Injector Installation Kit

This kit includes all critical sealing components for reinstalling injectors in high-pressure fuel systems. Perfect for servicing injectors on QSK19 engines with high-pressure common rail (HPCR) setups.

Kit Includes:

• High-temp injector washers
  
  

• Copper seals
  
  

• O-rings and backing seals
  
  

• Alignment components for precise installation
  
  

Fuel Pump Gasket

Seals the fuel pump to the engine block or gear housing, depending on your configuration. Prevents diesel fuel leaks and ensures consistent fuel delivery pressure.

Fuel Pump Regulator Gasket Set

Contains precision-cut gaskets and seals for the fuel pump regulator. Built to handle high-pressure operation and resist fuel corrosion.

Oil System Gaskets

Oil Cooler Gasket

Critical for sealing the oil cooler core to the engine block. These gaskets ensure that oil and coolant circuits remain separated to prevent contamination.

Oil Cooler Cover Gasket

Used to seal the outer cooler housing cover, this gasket prevents oil seepage and coolant leaks around the perimeter of the oil cooler assembly.

Oil Cooler Housing Gasket

Designed for the mounting base of the oil cooler. Ensures a leak-free interface even under high-pressure oil flow and fluctuating thermal expansion.

Oil Cooler O-Ring

An essential small-seal component used within oil cooler channels. These O-rings prevent cross-contamination and are resistant to high-temperature oil.

Oil Pan Adapter Gaskets (Upper and Lower)

The upper gasket seals the oil pan flange to the engine block, while the lower gasket completes the connection to the pan base or adapter.

Air Intake & Exhaust Gaskets

Turbo Mounting Gasket

A high-temperature gasket designed specifically for water-cooled turbochargers. With reinforced steel cores and thermal coatings, this gasket handles exhaust heat, boost pressure, and vibration.

Exhaust Manifold Outlet Gasket

Seals the connection between the manifold and the exhaust elbow or turbo inlet. Ideal for marine installations where corrosion and heat cycles are especially intense.

Engine Housing and Inspection Port Gaskets

Rocker Lever Housing Gasket

This gasket seals the rocker lever housing to the cylinder head. It prevents oil misting, pressurization loss, and valve train contamination.

Gear Train Cover Gasket

Used between the gear housing cover and the engine block, this gasket ensures timing gears remain protected from external debris and fluid intrusion.

Hand Hole Cover Gasket

Seals crankcase inspection covers used during maintenance. Offers long service life and prevents oil seepage from the lower block.

Gasket Adhesives, Sealants, and Assembly Products

High Tack Gasket Spray

Used to secure paper and fiber gaskets in place before installation. This tacky sealant reduces gasket movement during assembly and improves sealing on uneven surfaces.

Application Areas:

• Gear covers
  
  

• Valve cover gaskets
  
  

• Paper-based seals on older engine variants
  
  

Non-Hardening Liquid Sealant

Flexible, oil-resistant liquid gasket used for smooth metal-to-metal surfaces. Allows for easy future disassembly and is ideal for fuel systems or oil line fittings.

High-Strength Threadlocker – Red

Threadlocker designed for vibration-prone bolts in high-load areas such as exhaust manifolds, gear housing bolts, or turbocharger mounts. Resists heat, oil, and vibration.

RTV Silicone Gasket Makers

Available in multiple formats:

• Sensor-Safe RTV: Compatible with electronics and oxygen sensors
  
  

• High-Temp RTV: Ideal for turbocharger flanges and exhaust manifold joints
  
  

• Ultra Blue RTV: Extra-flexible, premium sealing for engine covers or joints with rough casting
  
  

• Non-Hardening RTV: Pliable material that resists setting over time, ideal for reuse or servicing access covers
  
  

Emergency Sealant – Cold Weld Epoxy

Two-part metal-repair epoxy used for temporary or emergency gasket surface repairs. Can be used to reseal damaged flanges or fill minor cracks in non-critical surfaces.

Why Choose Diesel Pro Power for Your QSK19 Gasket Needs?

• Fast Shipping: Most items ship same day from our warehouse
  
  

• Global Reach: Trusted by customers in 180+ countries
  
  

• Expert Support: Technical assistance available for complex rebuild questions
  
  

• OEM-Quality Materials: Sealing solutions that meet or exceed Cummins original specifications
  
  

• Inventory Confidence: Everything listed is in stock and ready to ship
  
  

Common QSK19 Gasket-Related Service Scenarios

Top-End Rebuilds

Replacing the cylinder head gasket and upper sealing components is common during scheduled overhauls or after coolant intrusion or combustion pressure loss. Always replace injector seals and turbo gaskets when removing the head.

Bottom-End Overhaul

The lower gasket set becomes necessary during full engine rebuilds, crankshaft bearing service, or oil cooler failures. Combining oil pan, front and rear seals, and housing gaskets ensures leak-free reassembly.

Injector and Turbo Replacement

Replacing injectors or turbochargers? These components should never be reused without fresh gaskets and seals. Injector kits and turbo mounting gaskets are affordable insurance against oil, coolant, or boost leaks.