Detroit Diesel Series 60 12.7L Injector Parts Catalog

The Detroit Diesel Series 60 12.7L engine is one of the most successful heavy-duty diesel engines in modern history. Renowned for its reliability, efficiency, and widespread use in trucks, buses, construction equipment, and marine applications, this inline-six engine became a standard in the industry. At the heart of its performance is the fuel injector system, which delivers precise quantities of fuel into the combustion chamber at the right pressure and timing.

Keeping injectors and related components in peak condition is critical to maintaining power, efficiency, and emissions compliance. This catalog provides a complete selection of rebuilt injectors, injector hardware, fuel system parts, and service tools for the Detroit Diesel 12.7L Series 60 engine.

Rebuilt Injectors for Detroit Diesel 12.7L Series 60

Detroit Diesel 5575 Injector – Rebuilt Heavy Duty

The 5575 injector is one of the most widely used injectors across the Series 60 11.1L and 12.7L platforms. At Diesel Pro Power, each unit is fully disassembled, inspected, and rebuilt with premium components. Once reassembled, injectors are tested and calibrated to OEM specifications, ensuring:

• Efficient combustion for maximum fuel economy

• Reliable cold starts

• Smooth idle and power delivery

• Extended injector lifespan

Every purchase includes a refundable core deposit, reinforcing Diesel Pro’s commitment to sustainable remanufacturing practices.

Detroit Diesel 7045 Injector – Rebuilt Premium Quality

The 7045 injector is engineered to deliver consistent fuel atomization across varied load conditions. Rebuilt injectors undergo:

• Ultrasonic cleaning to remove deposits

• Replacement of worn nozzles and seals

• Flow testing to ensure balanced fuel delivery

Operators in trucking fleets, transit buses, and industrial equipment rely on this injector for dependable service life.

Detroit Diesel 7466 Injector – Rebuilt

The 7466 injector is another high-demand unit for the Series 60. Rebuilt to the same strict standards, it ensures precise fuel metering even under high load. Each injector is recalibrated to maintain Detroit Diesel’s performance standards and prevent excessive smoke or fuel waste.

Detroit Diesel 7650 Injector – Rebuilt

A top performer in the 12.7L lineup, the 7650 injector is designed for durability. During rebuilding, technicians replace critical internal components and test each unit on specialized benches to verify spray pattern accuracy. The result is restored fuel efficiency and reduced downtime for operators.

Detroit Diesel 6977 Injector – Rebuilt Premium Heavy Duty

The 6977 injector represents the top tier of rebuilt solutions. Known for its robust construction, it is a popular replacement for high-duty fleets. Rebuilding involves:

• Complete teardown and cleaning

• Installation of new springs, seals, and nozzle tips

• Rigorous pressure and timing calibration

This ensures that engines continue to meet power and emissions requirements.

Injector Hardware and Accessories

Washer for Injector Clamp Bolt – Series 60

Every injector requires secure clamping to maintain sealing and prevent leaks. This washer is designed for Series 60 engines to withstand high combustion pressures. Replacing washers during injector servicing is essential to prevent blow-by and fuel leakage.

Injector Screw Assembly – Series 60

The injector screw assembly ensures proper seating and torqueing of the injector body. Built from hardened steel, it maintains clamping force under continuous vibration and thermal cycling.

Injector Tube for Detroit Diesel Series 60

The injector tube delivers fuel from the high-pressure pump to the injector inlet. Precision manufacturing ensures proper sealing and resistance to high fuel pressures. Regular replacement prevents fuel seepage and maintains proper atomization.

Fuel System Components

Detroit Diesel Fuel Pump – Old Style, Rebuilt

The Series 60’s fuel pump pressurizes diesel for injector delivery. Diesel Pro’s rebuilt pumps are completely disassembled, with worn components replaced and tolerances restored. While listed as “old style,” this pump remains a critical component for many fleets still running earlier Series 60 builds.

Injector Timing Tools – Kent Moore Type

Proper injector timing ensures efficient combustion and protects pistons, valves, and cylinder heads from damage. Diesel Pro Power offers Kent Moore type timing tools in several specifications:

• J42665 Timing Tool (80.3 mm) – Standard setting tool for precise injector timing.

• J42749 Timing Tool (81.0 mm) – Calibrated to match specific injector requirements.

• J45002 Timing Tool (82.1 mm) – Provides another option for operators requiring exact OEM calibration standards.

Each tool is designed to be durable and accurate, making them indispensable for mechanics working on Series 60 injectors.

Injector Service Kits

Detroit Diesel Injector Repair Kit – Series 60

This kit contains essential seals, gaskets, and hardware to restore injector integrity. Designed for in-frame service, it helps extend injector life without full replacement.

Injector O-Ring Kit – Series 60

O-rings are critical for sealing injectors against high combustion pressures. Over time, they can harden or crack, leading to fuel leaks. Diesel Pro’s O-ring kit includes all necessary seals to ensure proper installation and long-term reliability.

Injector Installation Kit – Series 60

This kit simplifies the process of fitting injectors during maintenance or rebuilds. With all hardware included, operators can avoid delays caused by missing components.

Electronic Control Module (ECM) Support

Isolator for ECM Mount – Series 60

The ECM governs injector timing and fuel delivery. This isolator reduces vibration and protects the ECM from premature failure. A small but crucial part of ensuring injectors receive the correct signals from the control unit.

Fuel Monitoring Components

Fuel Gauge – 12 Volts

Compatible with Detroit Diesel, Caterpillar, and Cummins engines, this gauge provides accurate fuel level readings. It features an integrated light bulb for visibility in low-light conditions.

Fuel Gauge Sender – Adjustable up to 19" Depth

This sender works in tandem with the gauge, providing real-time data to operators. Adjustable depth allows for installation across multiple fuel tank configurations.

Why Buy Detroit Diesel 12.7L Injectors from Diesel Pro Power

Trusted Worldwide

Diesel Pro Power serves 40,000+ satisfied customers across 180+ countries. From fleets and shipyards to power plants and individual operators, customers trust Diesel Pro for reliable parts and service.

Fast Global Shipping

All orders ship within 24 hours and include real-time tracking. This minimizes downtime, which is crucial for logistics companies and marine operators who can’t afford delays.

Exclusive Engine-Specific Catalogs

Unlike generic suppliers, Diesel Pro Power builds dedicated catalogs for engines like the Detroit Diesel 12.7L Series 60. This eliminates guesswork, ensuring that operators receive the right injector, tool, or component every time.

Premium Quality Rebuilt Injectors

Every injector is:

• Disassembled and cleaned

• Reassembled with premium seals, springs, and nozzles

• Tested for spray pattern and fuel pressure

• Calibrated to OEM standards

The result: injectors that perform like new and extend the life of Series 60 engines.

Expert Technical Support

Diesel Pro Power provides step-by-step assistance on:

• Injector selection

• Installation

• Timing procedures

• Troubleshooting misfires or fuel leaks

This support is backed by decades of experience with Detroit Diesel engines.