Cummins KTA 50 Engine Parts - Fuel Pump Section

Cummins KTA50 Fuel Pump & Fuel System Components Catalog

The Cummins KTA50 is a powerful, 16-cylinder industrial and marine diesel engine designed for high-output applications. Its fuel system is critical for consistent combustion, long-term durability, and power delivery. At Diesel Pro Power, we offer a complete range of fuel pump gaskets, fuel filters, fuel pressure switches, water separators, and maintenance tools designed specifically for the Cummins KTA50 engine and its related variants. With over 40,000 satisfied customers, we are a trusted source for professionals around the world.

Fuel System Overview for Cummins KTA50

The Cummins KTA50 uses a PT fuel injection system, similar to the KTA19 and KTA38, but optimized for the KTA50’s higher displacement and output. The fuel system consists of the fuel transfer pump, PT fuel pump, regulator, fuel filters, pressure switches, and Racor-style water separators.

Maintaining this system is vital for the performance of your engine—whether installed in a commercial vessel, offshore platform, or industrial generator.

Fuel Pump Gaskets & Regulator Gasket Sets

Fuel Pump Regulator Gasket Set for Cummins KTA50

Compatible with KTA19, KTA38, KTA50, and QSK19 engines, this gasket set is essential for sealing the regulator section of your PT fuel pump. If you're experiencing fuel leakage, inconsistent injection pressure, or degraded engine idle, a worn-out regulator gasket could be the cause.

• Ensures tight seal around regulator components

• Ideal for rebuilds and preventive maintenance

• Supports fuel system efficiency and minimizes emissions

This gasket set should be replaced anytime the fuel pump regulator is removed or rebuilt.

Fuel Pump Gasket for KTA50 (Coupling Seal)

This gasket is installed at the coupling interface of the fuel pump and prevents fuel leakage between the drive mechanism and pump housing. It's often overlooked during maintenance but plays a key role in preventing external leaks that can lead to safety hazards or performance drops.

• Designed for use with KTA19, KTA38, KTA50, L10, M11, N14, NH855, and NT855 engines

• Fuel pump coupling seal type

• Critical for clean and leak-free fuel delivery

Fuel Filters & Water Separators for Cummins KTA50

Fuel Filter & Water Separator Combo Unit

This filter acts as the first line of defense against contaminated fuel, especially in marine and off-grid installations where diesel fuel may degrade or contain water.

• 3.66" diameter, 9.92" height

• Thread size: 1-14 UN

• Dual function: Fuel filtration and water separation

Installing a high-efficiency fuel filter can prevent injector wear, fuel pump damage, and power loss.

Racor-Style Fuel and Water Separator Systems

While many Racor-style separators are associated with Detroit Diesel applications, these are commonly used with Cummins marine engines as well. All Racor units below are compatible with fuel systems that demand high water separation and filtration efficiency.

500 Series Replacement Fuel and Water Separator

• Includes 2010 filter element

• Ideal for smaller onboard filtration systems or backup filters

• Excellent for high-humidity marine environments

900 Series Replacement Fuel and Water Separator

• Includes 2040 filter element

• Higher capacity than 500 series

• Ideal for mid-size vessels or industrial platforms

1000 Series Replacement Fuel and Water Separator

• Includes 2020 filter element

• Large-volume fuel filtration capacity

• Designed for main engines or high-output generators

Racor Filter Elements for Fuel/Water Separators

Proper filtration depends not only on the separator unit, but also on the micron rating of the filter elements. Below are options for fine (2 micron) and coarse (30 micron) filtration.

2010 Series Elements

• Brown Top (2 Micron): Designed to catch the finest contaminants. Best for polishing fuel and protecting injectors.

• Red Top (30 Micron): Ideal as a primary filter to catch larger particulates before fuel reaches finer filtration stages.

2040 Series Elements

• Brown Top (2 Micron): High-efficiency fuel polishing. Ideal for final filtration before fuel enters injection system.

• Red Top (30 Micron): Primary filtration with high flow rate capabilities.

2020 Series Elements

• Brown Top (2 Micron): Excellent for protecting sensitive injection components.

• Red Top (30 Micron): Useful for rough fuel with larger contaminants like algae clumps or tank rust.

Each of these elements should be chosen based on your fuel quality, usage pattern, and engine operating environment. Regular inspection and replacement are critical to avoid downstream damage.

Fuel Filter Removal Tools & Maintenance Accessories

Fuel Filter Removal Wrench

Designed for both Cummins and Detroit Diesel applications, this wrench helps safely and easily remove spin-on fuel filters in tight spaces.

• Range: 3-7/16" to 3-3/4"

• Prevents filter damage from excessive torque

• Ideal for both shop and field repairs

Pressure Switches for Fuel and Oil Systems

The Cummins KTA50 relies on make/break style pressure switches to monitor and protect engine systems. These pressure switches are commonly installed on the fuel rail or oil gallery and play an important role in safety shutdown systems.

5 PSI Fuel & Oil Pressure Switch

• Make/break function

• Alerts or shuts down engine at low pressure

• 1/8 NPT thread size

10 PSI Fuel & Oil Pressure Switch

• Suitable for more sensitive fuel systems

• Works with shutdown modules or indicator panels

20 PSI Fuel & Oil Pressure Switch

• Mid-range pressure trigger point

• Compatible with standard marine instrumentation

27 PSI Fuel & Oil Pressure Switch

• Often used for systems requiring high-pressure alert levels

• Common in dual-pump configurations or remote monitoring setups

These switches are simple to replace and critical for system protection. Replace any damaged or faulty switch immediately to prevent major engine damage.

Marine Zinc for Fuel or Oil Cooler Protection

Zinc Anode for Fuel and Oil Coolers

In marine environments, stray currents and galvanic corrosion can damage fuel and oil coolers. This brass-plug style zinc anode is threaded into the cooler to provide sacrificial protection.

• Brass plug: NPT 3/8"

• Zinc insert length: 1"

• Designed for Cummins marine applications

Regular inspection and replacement of sacrificial zincs is a core part of preventive maintenance for KTA50 engines in saltwater conditions.

Fuel System Monitoring Gauges

To round out your fuel system reliability plan, installing gauges ensures you're always in control.

Mechanical Gauges

• Standard mechanical fuel pressure readings

• Simple and durable for harsh environments

Mechanical Gauges With Alarm

• Integrated alarm to notify operator of pressure drop

• Ideal for unmanned engine rooms or emergency generators

Electrical Gauges (12V and 24V)

• Designed for integration with electronic panels

• Available in both 12-volt and 24-volt configurations

• Suitable for engine monitoring systems on commercial vessels or stationary units

Common Fuel System Maintenance Signs for KTA50 Engines

Staying ahead of fuel system issues can prevent major engine problems. Here are signs it’s time to inspect or replace your fuel system components:

• Difficulty starting or hard cranking

• Decrease in power output or throttle lag

• Visible leaks around fuel pump or gaskets

• Alarms triggered by pressure switches

• Fuel discoloration or sediment in filter bowl

• Increased smoke or erratic combustion

Early intervention can save time, money, and extend the life of your KTA50 engine.

Compatible Engine Platforms

While this catalog is focused on the Cummins KTA50, many components are also compatible with:

• Cummins KTA19 and KTA38

• Cummins QSK19

• Cummins L10, M11, and N14

• Cummins NH855 and NT855

• Detroit Diesel Series 60 (for Racor filters and tools)

Diesel Pro Power ensures part compatibility with all supported engine platforms. Reach out if you're unsure which part fits your system.

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