Cummins N14 Fuel Pump & Fuel System Components

The Cummins N14 is one of the most reliable and widely used heavy-duty diesel engines ever produced. Designed for long-haul trucking, industrial applications, and marine environments, the N14’s durability is directly tied to the efficiency of its fuel system. A dependable fuel pump, paired with high-quality gaskets, solenoids, filters, and coupling components, ensures proper combustion, optimal fuel economy, and reduced downtime.

At Diesel Pro Power, we stock a complete range of Cummins N14 fuel pump parts and accessories, all designed to meet or exceed OEM specifications. With over 40,000 satisfied customers worldwide, we are a trusted source for operators, fleet managers, and rebuild specialists who depend on genuine reliability.

Fuel Pump Gaskets for Cummins N14

A properly sealed fuel pump is critical to avoiding leaks and maintaining consistent fuel pressure. The Cummins N14 fuel pump gasket is designed to withstand high pressures and exposure to diesel, ensuring a long service life.

• Prevents fuel leakage at pump connections

• Made from durable, heat- and fuel-resistant materials

• Compatible with Cummins N14 and select other heavy-duty Cummins engines

Regular replacement of the fuel pump gasket during routine maintenance or overhaul prevents costly downtime and fuel efficiency losses.

Fuel Pump Coupling for Cummins N14

The fuel pump coupling is the vital link between the fuel pump and the engine drive system. On the N14, it ensures precise timing and efficient delivery of fuel.

• High-strength design to resist torsional stress

• Ensures smooth transfer of power to the fuel pump

• Built to OEM standards for reliable fit and operation

A worn or damaged coupling can lead to erratic fuel delivery, poor combustion, and potential pump damage. Replacing this component with a premium-quality part is essential for extending the life of your N14 engine.

Fuel Shutoff Valves (Solenoids)

The fuel shutoff valve, often referred to as a fuel shutoff solenoid, controls the flow of diesel to the engine, allowing for safe startup and shutdown. Cummins N14 engines may use either 12-volt or 24-volt solenoids depending on the application.

12-Volt Fuel Shutoff Valve

• Designed for N14-powered systems running 12V electrical setups

• Provides reliable fuel cut-off during shutdown

• Helps prevent run-on and fuel system flooding

24-Volt Fuel Shutoff Valve

• Optimized for 24V electrical systems found in many heavy-duty applications

• Ensures secure shutdown and prevents fuel leakage

• Built for long service life under demanding conditions

Cummins Solenoids for N14

In addition to fuel shutoff valves, Cummins solenoids are available in multiple configurations to meet the needs of various N14 applications.

• 12-Volt Solenoids – Single-pole design for compact setups

• 24-Volt Solenoids – Single-pole and dual-pole versions available for broader compatibility

• Rectangular Seal Rings – Two required per fuel solenoid, ensuring tight sealing and preventing leaks

These solenoids are essential for maintaining precise fuel delivery and ensuring the engine responds reliably to electrical commands.

Cummins N14 Fuel Filters & Water Separators

Fuel quality is one of the biggest factors in extending the life of your Cummins N14. Contaminants like water, dirt, and microbial growth can quickly degrade performance and damage injectors.

Standard Fuel Filter & Water Separator Units

• Available in multiple diameters and thread sizes for Cummins applications

• Protect against water contamination and fuel impurities

• Extend the life of injectors and pumps

Fuel Filter Bases

The fuel filter base for the N14 secures filter elements and maintains leak-free connections. A properly installed base reduces the risk of fuel starvation and ensures consistent operation.

Racor Fuel & Water Separators

Diesel Pro Power also offers Racor-style replacement fuel/water separators, which are trusted worldwide for their superior contaminant removal.

• Available in 500, 900, and 1000 series housings

• Include filter elements for clean fuel delivery

• Color-coded filter elements:

• Brown top (2 micron) for maximum filtration

• Red top (30 micron) for primary filtration and high-flow requirements

By selecting the right micron rating, operators can tailor fuel filtration to their environment—harsh marine conditions, long-haul trucking, or industrial applications.

Fuel Filter Removal Tools

Maintaining your N14 fuel filters is much easier with the right tools. The fuel filter removal wrench is specifically designed for Cummins and Detroit Diesel filters, covering common diameters for easy servicing.

• Heavy-duty steel construction

• Fits 3-7/16" to 3-3/4" filters

• Prevents damage to filter housings during removal

Fuel & Oil Pressure Switches

Monitoring fuel and oil pressure is critical in protecting your Cummins N14 from costly damage. Diesel Pro Power stocks a full range of make/break pressure switches to match different PSI thresholds.

• 5 PSI, 10 PSI, 20 PSI, and 27 PSI options available

• Compatible with Cummins N14 as well as select Detroit Diesel applications

• Precision-calibrated to ensure accurate readings and reliable operation

Installing the proper pressure switch ensures your engine management system receives accurate data, helping prevent low-pressure failures and maintaining long-term performance.

Why Choose Diesel Pro Power for N14 Fuel System Components?

• Global Shipping: Parts shipped fast, anywhere in the world

• In-Stock Guarantee: No waiting for back orders—everything listed is ready to ship

• Trusted by 40,000+ Customers: Fleet managers, rebuild shops, and operators rely on our parts every day

• Easy Ordering: User-friendly online catalog with clear details and support