Parts for Detroit Diesel 8V71 Turbo – Injector Section

The Detroit Diesel 8V71 Turbo is one of the most respected engines in the legendary 71 Series. Known for its rugged construction, long service life, and ability to handle demanding loads in marine propulsion, power generation, and heavy equipment, this V8 two-stroke turbocharged diesel engine depends heavily on its fuel injection system for reliable performance.

The injector system ensures that fuel is delivered at precisely the right moment, atomized correctly, and burned efficiently inside the cylinders. For operators and technicians, keeping injectors in peak condition is essential to avoid performance losses, excess fuel consumption, or premature engine wear.

Diesel Pro Power offers a complete range of rebuilt premium heavy-duty injectors, injector tips, plungers, timing tools, fuel connectors, jumper lines, service kits, and governor-related parts—all tailored specifically for the Detroit Diesel 8V71 Turbo.

Rebuilt Injectors for Detroit Diesel 8V71 Turbo

Premium Heavy-Duty Rebuilt Injectors for Detroit Diesel 8V71 Turbo

Our premium heavy-duty rebuilt injectors are engineered to restore the performance and reliability of your Detroit Diesel 8V71 Turbo engine. Each injector is fully disassembled, ultrasonically cleaned, fitted with new wear parts, precision-machined to original tolerances, recalibrated, and pressure-tested to confirm correct atomization and fuel delivery.

Important Note from Diesel Pro Power: We recommend replacing your injectors with the same model originally installed in your engine. Changing injector sizes affects fueling rates, combustion heat, turbo boost balance, and cooling requirements. Without additional upgrades to pistons, liners, turbochargers, and the governor system, altering injector size can reduce engine life and reliability. Only an experienced Detroit Diesel engineer should authorize injector changes for performance tuning.

Below are the premium rebuilt injector models available for the Detroit Diesel 8V71 Turbo engine:

N55 Injector for the Detroit Diesel 8V71 Turbo Engine

The N55 injector is designed for operators prioritizing fuel efficiency. It delivers conservative fueling, making it suitable for applications where fuel economy and engine longevity are more important than maximum horsepower.

N60 Injector for the Detroit Diesel 8V71 Turbo Engine

A balanced option, the N60 injector provides a mix of fuel economy and horsepower. It is widely used in moderate-duty applications, including vessels and equipment that operate under steady loads.

N65 Injector for the Detroit Diesel 8V71 Turbo Engine

The N65 injector offers slightly more aggressive fueling than the N60. It is a reliable choice for applications that require consistent power while still maintaining reasonable fuel consumption.

N70 Injector for the Detroit Diesel 8V71 Turbo Engine

This injector delivers increased fuel for stronger horsepower and torque. It is often used in marine propulsion and heavy industrial work where reliable pulling power is essential.

N75 Injector for the Detroit Diesel 8V71 Turbo Engine

The N75 injector provides robust fueling and is a popular choice in turbocharged 8V71 engines that were originally configured for higher power output. It balances strong horsepower delivery with stable performance.

N80 Injector for the Detroit Diesel 8V71 Turbo Engine

Engineered for demanding applications, the N80 injector delivers high fueling rates for operators who need additional horsepower. It is typically found in engines designed for heavy-duty marine and industrial operations.

N90 Injector for the Detroit Diesel 8V71 Turbo Engine

The most aggressive of the N-series, the N90 injector supplies maximum fuel delivery. It is intended for engines originally configured with N90 injectors and supporting components to handle the additional combustion heat and power.

M15 Injector for the Detroit Diesel 8V71 Turbo Engine

The M15 injector is a specialized option used in certain turbocharged applications where medium-duty performance tuning is required. It provides steady fuel delivery optimized for turbo efficiency.

M95 Injector for the Detroit Diesel 8V71 Turbo Engine

One of the most performance-focused injectors available, the M95 is designed for maximum fuel delivery. Engines originally fitted with M95 injectors can achieve very high horsepower, but supporting systems must be in place to manage the increased fuel and heat.

5670 Injector for the Detroit Diesel 8V71 Turbo Engine

A versatile injector option that provides dependable fueling across a range of applications. It is often chosen for industrial-duty engines requiring balanced performance.

145 Injector for the Detroit Diesel 8V71 Turbo Engine

The 145 injector is tailored for heavy-duty applications that demand reliable atomization and sustained power under high loads.

7425 Injector for the Detroit Diesel 8V71 Turbo Engine

This injector is known for its durability in marine and industrial operations. It is engineered to provide consistent fuel flow in environments that place engines under heavy stress.

7045 Injector for the Detroit Diesel 8V71 Turbo Engine

Designed for industrial equipment, the 7045 injector ensures long service life and dependable horsepower delivery in machinery that operates continuously.

7245 Injector for the Detroit Diesel 8V71 Turbo Engine

The 7245 injector is frequently installed in marine propulsion engines, offering steady fueling for vessels that require reliable continuous-duty performance.

Diesel Pro Power Recommendation

While many injector models are available for the Detroit Diesel 8V71 Turbo engine, the best practice is to replace your injectors with the same model your engine was originally configured with. Upgrading to a larger injector for more horsepower without adjusting pistons, turbochargers, and cooling systems can shorten engine life and cause serious reliability issues.

If you are considering a change in injector size, consult an experienced Detroit Diesel engineer to evaluate your entire fuel and combustion system. Diesel Pro Power provides the correct injectors to match your existing configuration, ensuring long-term durability and performance.

Injector Tips & Plungers

Replacement Injector Tips

The injector tip plays a critical role in atomizing fuel inside the combustion chamber. Diesel Pro Power stocks a complete line of injector tips for all major Detroit Diesel 8V71 injector models. Options are available for N55, N60, N65, N70, N75, N80, and N90 injectors.

A new injector tip ensures a precise spray pattern, reduces unburned fuel, and restores power and efficiency. Replacing worn tips can prevent issues like smoky exhaust, poor idle, or hard starting.

Precision Injector Plungers

The plunger is the component inside the injector responsible for pressurizing fuel before it enters the tip. Plungers are matched to each injector size, and Diesel Pro Power carries replacements for all common models used in the 8V71 Turbo. New plungers restore injection pressure, maintain consistent timing, and extend overall injector life.

Injector Timing Tools for Detroit Diesel 8V71 Turbo

Proper injector timing is essential to the engine’s performance. Even small timing errors can result in reduced power, excessive smoke, or overheating. Diesel Pro Power provides specialized timing tools to simplify injector installation and calibration.

• 1.484 Tool – Used for specific injector series including HV6 and certain N models.

• 1.460 Tool – Designed for HV7 series injectors, covering a range from N45 up to N90.

• 1.508 Tool – A versatile calibrator for broader injector applications.

These tools allow mechanics to precisely set injector rack height and timing, ensuring synchronized firing across all eight cylinders.

Fuel Pipe Connectors, Jumper Lines, and Seals

The Detroit Diesel 8V71 Turbo uses a series of fuel jumper lines and connectors to deliver fuel from the main supply rail to each injector. Diesel Pro Power provides both old-style and new-style connectors, washers, and O-ring seals for dependable fuel system performance.

• Fuel Pipe Connectors – Available in both traditional and updated styles for Series 71 and 92 engines.

• Injector Fuel Connectors – Designed for reliable sealing and leak-free operation.

• O-Rings and Washers – Essential for preventing leaks, ensuring long-term reliability.

• Fuel Jumper Lines (Short and Long) – Both lengths are required for complete installation. Available in original and new-style designs.

Replacing these small but critical components ensures that the fuel system maintains proper pressure without leaks.

Injector Service Kits & Hardware

To simplify maintenance, Diesel Pro Power offers complete injector service kits for the 8V71 Turbo. These kits include seals, gaskets, and hardware commonly needed during injector rebuilds or replacements.

Additional hardware available includes:

• Injector Brackets & Bolts – Keep injectors firmly seated and aligned.

• Valve & Spring Assemblies – Maintain injector responsiveness and fuel delivery.

• Injector Washers – Provide secure sealing for leak-free operation.

Having these parts readily available minimizes downtime during scheduled maintenance or emergency repairs.

Governor and Control Tube Components

The governor system regulates engine speed and fuel delivery. To ensure smooth and accurate throttle response, Diesel Pro Power stocks essential parts including:

• Springs for Mechanical and Marine Governors – Maintain stable control under variable load conditions.

• Adjusting Bolts and Brackets – Allow fine-tuning of governor performance.

• Links for Injector Control Tubes – Available in left-hand and right-hand designs.

• Bearings and Pins – Ensure smooth movement of governor levers and weight shafts.

Together, these components help operators maintain precise control over their 8V71 Turbo, whether under light cruising conditions or full-load operation.

Fuel Gauges & Senders

Monitoring fuel levels is just as important as maintaining injectors. Diesel Pro Power offers 12-volt fuel gauges compatible with Detroit Diesel, Caterpillar, and Cummins engines, as well as adjustable depth fuel gauge senders. These components provide accurate readings to help operators plan refueling schedules and avoid unexpected downtime.

Why Buy Detroit Diesel 8V71 Turbo Injectors from Diesel Pro Power

Choosing the right supplier for injectors and related fuel system components can mean the difference between smooth, reliable operation and costly downtime. The Detroit Diesel 8V71 Turbo is a high-performance engine that demands precision parts and knowledgeable support. With more than 40,000 satisfied customers across 180+ countries, Diesel Pro Power has built a reputation as the trusted aftermarket supplier for fleets, marine operators, and industrial users worldwide.

Trusted by Professionals Worldwide

Shipyards, commercial fleets, industrial operators, and power plants all depend on Diesel Pro Power to keep their Detroit Diesel engines performing at peak efficiency. Our reputation is built on consistent quality, fast response times, and a customer-first approach. Whether it’s a fishing vessel in Alaska, a tugboat in the Gulf, or a standby generator in a remote facility, professionals trust us because we deliver dependable solutions every time.

Fast Global Shipping With Tracking

Minimizing downtime is a top priority for any operator. That’s why Diesel Pro Power maintains streamlined logistics and a global distribution network that ensures your injectors arrive quickly and in excellent condition. Every shipment includes real-time tracking, so you always know when your order will arrive. For time-sensitive applications like marine propulsion or industrial power generation, this reliability means your engine is back in service faster.

Exclusive Engine-Specific Catalogs

Generic listings often lead to confusion, incorrect part orders, and wasted time. Diesel Pro Power eliminates this problem by providing engine-specific catalogs tailored exclusively for Detroit Diesel engines. Each injector listing is matched specifically for the Detroit Diesel 8V71 Turbo, ensuring compatibility and removing the guesswork from ordering. This precision approach helps technicians and operators find exactly what they need on the first try, saving both time and money.

Premium Heavy-Duty Rebuilt Injectors

Our injectors are more than just refurbished—they are rebuilt to exacting standards that restore them to like-new performance. Each injector is carefully disassembled, inspected, fitted with new wear parts, calibrated for accurate fuel delivery, and pressure-tested for proper atomization. The result is an injector you can trust to deliver fuel efficiently, reduce emissions, and extend the service life of your Detroit Diesel 8V71 Turbo engine. Operators benefit from consistent power output, improved fuel economy, and dependable long-term reliability.

Expert Technical Support You Can Count On

When it comes to Detroit Diesel engines, experience matters. Diesel Pro Power’s team of specialists is ready to help with practical advice on injector selection, timing procedures, calibration, and installation best practices. Whether you’re troubleshooting fuel delivery issues or planning a full injector replacement, you have access to guidance backed by decades of hands-on expertise with the 71 Series. This level of support ensures your injectors are not only installed correctly but also optimized for peak performance.

The Diesel Pro Power Advantage

When you choose Diesel Pro Power, you’re choosing more than just a supplier—you’re choosing a partner dedicated to the success of your operation. With trusted reliability, fast delivery, precise engine-specific catalogs, premium rebuilt components, and technical support that goes beyond the sale, Diesel Pro Power makes maintaining your Detroit Diesel 8V71 Turbo engine simple and worry-free.