Cummins ISB 6.7L Parts – Fuel System Components

The Cummins ISB 6.7L engine relies on a precise and robust fuel delivery system to maintain optimal performance, fuel efficiency, and emissions control. Whether operating in marine, industrial, or heavy-duty environments, the reliability of the fuel system is critical for clean combustion and consistent power output. This section of our Cummins ISB 6.7 parts catalog focuses on fuel system components—including fuel transfer pumps, injection pump gaskets, shutoff solenoids, fuel filters, water separators, pressure switches, and related tools. All components are built to OEM specifications for a perfect fit and long-lasting durability.

With over 40,000+ satisfied customers worldwide, Diesel Pro Power delivers the parts you need with fast shipping and expert support.

Fuel Transfer Pumps for Cummins ISB 6.7

A properly functioning fuel transfer pump ensures the right amount of diesel is supplied from the tank to the high-pressure fuel system. Diesel Pro offers precision-engineered Cummins fuel transfer pumps to maintain proper fuel flow and prevent power loss.

Mechanical Lever Style Fuel Transfer Pump

Ideal for older-style fuel systems or applications where a mechanical drive is preferred, this lever-actuated fuel transfer pump ensures consistent fuel delivery under varying load conditions. Built with durable seals and corrosion-resistant housings, it’s a reliable replacement for worn or leaking pumps.

Applications: Suitable for ISB 6.7 configurations using a mechanical lever pump. Also compatible with certain 4BT and 6BT setups.

Mechanical Piston Style Fuel Transfer Pump

Designed for non-rotary pump systems, the mechanical piston-style transfer pump provides stable fuel pressure and efficient priming. Its compact design fits tight engine compartments while maintaining OEM flow rates.

Applications: For ISB 6.7 systems without rotary fuel pumps.

Fuel Transfer Pump Gaskets

A leaking gasket at the transfer pump can cause fuel seepage, air entry into the system, and poor engine performance. Our OEM-spec Cummins fuel transfer pump gaskets ensure a tight, leak-free seal.

• Cover Plate Gasket – Two gaskets are required per fuel pump to ensure a complete seal between the cover plate and housing.

• Fuel Injection Pump Gasket – Maintains pressure integrity in the injection system and prevents fuel leakage around the injection pump mounting surface.

Fuel Shutoff Solenoids

The fuel shutoff solenoid plays a vital safety role by stopping fuel delivery when the engine is shut down. For the Cummins ISB 6.7, Diesel Pro carries the 12-volt solenoid designed to withstand harsh vibration and temperature extremes, ensuring dependable operation in both marine and industrial environments.

Key Benefit: Prevents diesel run-on, protects the fuel system, and enhances engine safety.

Fuel Filters for Cummins ISB 6.7

Fuel filtration is essential for protecting sensitive injectors and maintaining clean combustion. Diesel Pro offers a full range of Cummins fuel filters that meet or exceed OEM filtration efficiency.

Standard Cummins Fuel Filters

• High-efficiency media captures fine particulates

• Corrosion-resistant housing for long service life

• Designed for easy spin-on replacement

Fuel Filter & Water Separator Combos

Water contamination is one of the leading causes of diesel injection system failure. Our combination filters remove both particulates and water before the fuel reaches the high-pressure pump and injectors.

Racor®-Style Fuel Water Separators & Elements

For operators who require enhanced water removal, we supply Racor-compatible fuel water separators in multiple flow capacities—500, 900, and 1000 series units—with corresponding replacement filter elements.

• 500 Series – Compact design for medium-duty applications

• 900 Series – Higher flow for larger engines or extended intervals

• 1000 Series – Maximum filtration capacity for heavy-duty marine or industrial use

Replacement Elements (2010, 2040, 2020)

Available in both 2 micron (brown top) for maximum particulate control and 30 micron (red top) for pre-filtration in high-contaminant environments.

Fuel Pressure Switches

Fuel and oil pressure switches provide real-time monitoring and protection by signaling low-pressure conditions. Diesel Pro offers Cummins-compatible switches in a range of PSI ratings (5, 10, 20, 27 PSI) with 1/8” NPT fittings.

Applications: Can be integrated into alarm panels or automated engine shutdown systems.

Fuel System Tools

A complete maintenance routine requires the right tools. Diesel Pro stocks fuel filter removal wrenches designed for 3-7/16” to 3-3/4” filter housings, making filter replacement quick and hassle-free.

Why Choose Diesel Pro Power for Cummins ISB 6.7 Fuel Components?

• OEM Fit & Function – Every part is engineered to match Cummins factory specifications.

• Global Customer Base – Trusted by over 40,000+ operators worldwide.

• Comprehensive Stock – From transfer pumps to filter elements, we have everything you need in one place.

• Expert Support – Our team understands Cummins fuel systems and can help match the right part to your CPL or application.