Parts for Detroit Diesel 12V71 Non-Turbo – Injector Section

The Detroit Diesel 12V71 Non-Turbo is a true powerhouse from the legendary Series 71 engine family, renowned for its durability, simplicity, and ability to perform under extreme working conditions. With its 12-cylinder V-configuration and two-stroke design, this engine has powered vessels, equipment, and facilities around the world for decades. From commercial fishing boats to stationary power plants, the 12V71 Non-Turbo continues to earn trust because of its rugged construction and dependable output.

Like all Detroit Diesel engines, its performance depends heavily on the precision of its fuel system. The injectors are the heart of this system, metering and atomizing fuel into the combustion chamber at the exact moment needed. Without properly calibrated injectors, operators face power loss, poor fuel economy, and increased emissions. To keep the 12V71 Non-Turbo running at its best, Diesel Pro Power offers a full line of rebuilt injectors and supporting hardware—engineered to OEM specifications and organized by function for clarity.

Rebuilt Premium Heavy-Duty Injectors

Every injector supplied for the Detroit Diesel 12V71 Non-Turbo is rebuilt to exact OEM standards, tested for accuracy, and calibrated to deliver consistent fuel delivery under demanding workloads. These injectors are designed to restore the engine’s original fuel atomization, ensuring smooth combustion, maximum torque, and reliable service life. Whether your application is marine propulsion, heavy industrial use, or continuous-duty power generation, the correct injector model makes all the difference.

• Detroit Diesel Injector N55 – Rebuilt Premium Heavy Duty
  The N55 is a proven choice for operators who prioritize fuel economy and balanced performance. Its smaller fuel delivery volume allows for steady, efficient operation, making it ideal for long-duration, continuous-duty settings where reliability outweighs maximum output.

• Detroit Diesel Injector N60 – Rebuilt Premium Heavy Duty
  The N60 sits in the middle of the injector lineup, providing a balanced combination of efficiency and power. It is a versatile option, delivering consistent combustion efficiency across all 12 cylinders. Operators often choose the N60 when they want reliable output without over-fueling the engine, making it suitable for general-purpose marine and industrial roles.

• Detroit Diesel Injector N65 – Rebuilt Premium Heavy Duty
  Known for producing robust torque delivery, the N65 is one of the most widely used injectors in this engine family. Its fueling rate is ideal for marine propulsion systems, tugboats, and heavy equipment that need extra pulling power. It strikes a balance between durability and performance, giving operators confidence in demanding conditions.

• Detroit Diesel Injector N70 – Rebuilt Premium Heavy Duty
  For those who need increased fueling and higher horsepower, the N70 delivers. It is designed for applications where engines are pushed harder and higher output is required—such as in offshore vessels or industrial power units. Importantly, the N70 achieves this boost without compromising durability, thanks to strict rebuild and calibration standards.

• Detroit Diesel Injector N75 – Rebuilt Premium Heavy Duty
  A heavy-duty option for the most intensive operating environments, the N75 is built for vessels and machinery that spend extended periods under heavy load. It provides strong fueling and maintains consistent combustion, ensuring that engines continue to deliver power reliably even during continuous full-throttle operation.

• Detroit Diesel Injector N80 – Rebuilt Premium Heavy Duty
  The N80 is a robust, high-capacity injector suited for power generation, marine applications, and industrial machinery that must operate for long cycles at stable output. This model offers a balance of smooth performance and heavy-duty reliability, making it a favorite for operators who demand consistent service in critical applications.

• Detroit Diesel Injector N90 – Rebuilt Premium Heavy Duty
  At the top of the range, the N90 is engineered for maximum fueling capacity within the 12V71 Non-Turbo series. It is the injector of choice for high-output configurations, where maximum horsepower and torque are required. Designed to withstand heavy loads, the N90 ensures reliable atomization even under extreme fueling conditions, making it the go-to option for operators seeking peak engine performance.

Injector Timing Tools

Proper injector timing is critical for peak performance of the Detroit Diesel 12V71 Non-Turbo. These Kent-Moore style precision tools ensure accurate setup.

• Injector Timing Tool (1.484) – For HV6 injectors (N65, N80).

• Injector Timing Tool (1.460) – For HV7 injectors (N45, N50, N55, N60, N70, N90).

• Injector Timing Tool (1.508) – For precision calibration across injector groups.

Fuel Pipe Connectors, Washers & Seals

Maintaining tight, leak-free connections ensures consistent fuel delivery.

• Fuel Pipe Connector for Series 71 and 92 – Old style connector, used across classic Detroit Diesel systems.

• Washer for Fuel Pipe Connector – Two required per injector connection.

• O-Ring Seal for New Style Fuel Jumper Lines – Two required per fuel line, preventing leakage.

Fuel Jumper Lines

Each 12V71 Non-Turbo engine requires a combination of short and long jumper lines to complete the fuel delivery circuit.

• Fuel Line (Short) for Series 71 and 92 – Used in alternating positions with long lines.

• Fuel Line (Long) for Series 71 and 92 – Completes the injector fuel rail system.

• Fuel Jumper Line (Short, New Style) – Updated design for modernized connections.

• Fuel Jumper Line (Long, New Style) – Complements the short version for complete fuel flow.

Tools & Service Kits

• Socket Wrench for Injector Fuel Lines – Special tool for removal and installation of injector fuel lines in Series 53, 71, and 92 engines.

• Detroit Diesel Service Kit for Injector – Includes seals and small parts required for injector service.

Injector Brackets, Washers & Bolts

These parts secure injectors in place and maintain correct alignment.

• Injector Bracket – Ensures injectors remain properly seated during engine operation.

• Washer for Engine Injector – Provides even clamping force.

• Bolt for Manifold Flange & Injector Bracket – Dual-purpose fastener for injector bracket installation.

Control Tube Brackets & Links

The injector control tube system requires precise brackets and links for reliable fuel metering.

• Bracket for Injector Control Tube (Series 71 & 92) – Stabilizes the injector control tube.

• Left-Hand Link for Injector Control Tube (V71 & V92) – For correct control rod connection.

• Right-Hand Link for Injector Control Tube (V71 & V92) – Complements left-hand link for full control system.

Injector Tips

Precision injector tips ensure proper atomization and combustion efficiency.

• Injector Tip for N55, N60 – New design for fine fuel spray pattern.

• Injector Tip for N65 – Optimized for mid-range fueling.

• Injector Tip for N70, N75 – Designed for higher fueling models.

• Injector Tip for N80, N90 – Built for high-output injectors.

Injector Plungers

The plunger is a core internal component of every injector. These are offered new for specific injector models.

• Plunger for N55 Injectors

• Plunger for N60 Injectors

• Plunger for N65 Injectors

• Plunger for N70 Injectors

• Plunger for N90 Injectors

Each plunger is manufactured to precise tolerances for fuel metering and durability.

Governor Components

The Detroit Diesel 12V71 Non-Turbo relies on a mechanical governor system for fuel control. Supporting springs, brackets, bolts, and bearings keep it reliable.

• Throttle Booster Springs (various lengths) – Provide governor balance.

• Governor Adjusting Bolts & Brackets – Allow proper spring tension setup.

• Governor Bearings – For weights riser and shaft assemblies.

• Governor Nuts, Screws, and Pins – Small but critical hardware for control linkages.

Injector Valve Assemblies

• Injector Valve & Spring – Replacement valve set for Series 53, 71, and 92 engines.

• Injector Spring – Ensures consistent injector plunger operation.

• Valve Spring Seat – Provides a stable base for injector valve springs.

Additional Accessories

• Fuel Gauge (12V) – With light bulb, compatible with Detroit Diesel, Caterpillar, and Cummins.

• Fuel Gauge Sender – Adjustable up to 19" depth, ensures accurate fuel level monitoring.

• Spring for Injector Control Tube – Replacement spring for Series 71 and 92 control tube assemblies.

Why Buy Detroit Diesel 12V71 Non-Turbo Injector Parts from Diesel Pro Power

Choosing Diesel Pro Power means investing in more than just replacement parts—you’re investing in reliability, expertise, and long-term performance for your Detroit Diesel 12V71 Non-Turbo engine.

40,000+ Satisfied Customers Worldwide
From commercial fleets to fishing vessels, tugboats, and power generation facilities, operators around the globe rely on Diesel Pro Power. Our proven track record shows that we deliver quality parts and dependable service no matter the industry.

Fast Global Shipping
We ship to over 180 countries with trackable delivery, minimizing downtime for operators who can’t afford delays. Whether your vessel is docked in Miami, your generator is running in a remote facility, or your tugboat is working overseas, our logistics ensure parts arrive quickly and safely.

Exclusive Engine-Specific Catalogs
Unlike generic suppliers, we organize our catalog by engine model. This means you’ll find only Detroit Diesel 12V71 Non-Turbo injector parts—no guesswork, no risk of ordering incompatible components. Every injector, tool, and accessory is listed with your exact engine in mind.

Premium Quality and Support
Every injector we supply is rebuilt to OEM specifications, tested, and calibrated for long-term durability. Beyond the parts themselves, our team provides expert guidance on injector calibration, governor adjustments, and installation best practices. This ensures your fuel system performs at its highest efficiency.

Your Trusted Aftermarket Partner
When you order from Diesel Pro Power, you’re not just purchasing injectors—you’re gaining a partner with deep knowledge of Detroit Diesel engines. Our goal is to keep your 12V71 Non-Turbo running smoothly for years to come, reducing maintenance headaches and extending the service life of your equipment.

With Diesel Pro Power, you can order confidently, install with peace of mind, and operate knowing your Detroit Diesel 12V71 Non-Turbo is supported by a company dedicated to its success.

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