0414703002 — The 0414703002 diesel injector is a precision fuel injection component designed for Detroit Diesel Series 60 engines

    

Some diesel engines become legends. The Detroit Diesel Series 60 is one of them. Introduced in 1987, it redefined heavy-duty trucking with its overhead cam design, electronic controls, and fuel efficiency that left competitors scrambling. Nearly four decades later, countless Series 60 engines are still hauling freight across North America - not because they're vintage, but because they're indispensable.

The Bosch 0414703002 is the fuel injector that keeps these engines earning. It belongs to a generation of diesel technology that predates the common rail revolution - the Electronic Unit Injector (EUI) system - where each cylinder gets its own self-contained high-pressure pumping and injection unit. And while the industry has largely moved to common rail, the Series 60's EUI architecture remains remarkably effective, even by today's standards.

This isn't an injector for a museum piece. It's for a workhorse - the kind that still logs a million miles and asks for more.

 

The 0414703002 represents Bosch's EUI (Electronic Unit Injector) technology - also known as the N3 injector platform. Unlike common rail systems, which pressurize fuel in a shared accumulator and distribute it to all cylinders via high-pressure lines, the EUI system integrates the pumping element and nozzle into a single housing mounted directly in the cylinder head.

Why does this matter?

Mechanical certainty - The injector is actuated by the engine's camshaft, meaning injection timing is inherently synchronized with piston position. No electronic lag, no pressure drop across long lines.

Simplified plumbing - No external high-pressure fuel lines running between a pump and injectors. Fewer leak paths, fewer failure points.

Proven durability - The Series 60's EUI system has been refined over decades. Bosch's N3 injectors like the 0414703002 feature advanced sealing and wear-resistant internals that deliver consistent performance across extended duty cycles.

The Series 60 uses EUI - meaning fuel delivery is controlled by both mechanical motion and electronic timing. This hybrid approach gives operators the best of both worlds: the deterministic precision of mechanical actuation and the flexibility of electronic control.

 

The 0414703002 is the Bosch-manufactured injector for the Detroit Diesel Series 60 - one of the most successful heavy-duty diesel engines ever built. It serves both 12.7L and 14.0L displacement variants, with particular emphasis on the 14.0L EPA04 / DDEC5 configurations produced between approximately 2005 and 2008.

Primary applications include:

Application	Detail
Engine	Detroit Diesel Series 60 (12.7L & 14.0L)
Emission Standard	EPA04 / DDEC5
Model Years	2005–2008
Injector Type	Electronic Unit Injector (EUI / N3)
Flow Rating	7.70 (N3 spec)

Truck platforms equipped with this injector include:

Freightliner - Columbia, Century, Coronado, Classic, Classic XL (2005–2008)

Sterling - A-Line, L-Line (2005–2008)

Western Star - 4900 Series (2005–2008)

Cross-reference part numbers for the 0414703002 include:

Brand	Part Number
Detroit Diesel	R414703002, E414703002, FS414703002
Bosch	0414703002, 0414703002R, 0986441028, 0-986-441-028
Other	198561D, 044903, RPP414703002X

Physical specifications (based on related data):

Net weight (per unit): approximately 1.2 kg

Gross weight (per unit): approximately 1.33 kg

Single unit dimensions: approximately 29.5 × 11.7 × 7 cm

6-unit gross weight: approximately 8.34 kg

 

Here's the question every Series 60 operator eventually faces: Do I replace one injector, or all six?

The 0414703002 is available in three configurations:

1. New OEM-spec - Zero service history, factory-fresh calibration, Bosch's full quality assurance. Premium cost, premium peace of mind.

2. Remanufactured - Bosch-authorized remanufacturing restores the injector to like-new condition using OE-spec components. Lower cost than new, with a core charge refundable upon return of the old unit. A 12-month unlimited mileage warranty is typically included.

3. Matched set - The "S" suffix (R414703002S) designates a factory-matched set of six injectors for the 14.0L engine. Replacing injectors as a matched set is the recommended approach for engines showing power loss, increased smoke, rough idle, or fuel economy degradation. Matched sets ensure balanced fuel delivery, precise atomization, and stable combustion across all cylinders.

When replacing a single injector, it's critical to identify the root cause of the failure. Injectors can fail due to fuel contamination, internal electrical issues, or seal failure. If the cause was elsewhere in the fuel system, that issue must be addressed or repeat failure will occur.

 

The 0414703002 lives deep in the cylinder head. Proper installation requires:

Depressurize the fuel system before any work begins

Place a rag over the high-pressure pipe nut at the accumulator for the affected cylinder, then carefully undo the nut

Use the correct extraction tool - a slide hammer (such as Bosch 87 596) placed between the solenoid valve and the edge of the lower rocker cover

If the injector is seized (common in high-mileage engines), an impact extractor may be necessary

Always replace the clamp, fittings, and rubber-metal gaskets - these are single-use components

Inspect the fuel supply system for contamination and change the fuel filter before fitting the new injector

Critical note: Bosch recommends verification of fitment through the Bosch AutoParts Catalogue (now using SingleKey ID) before ordering.

 

The global diesel landscape is shifting. Electrification is real. But the Series 60 - and the 0414703002 that feeds it - remains a fixture in North American trucking. These engines are still moving freight, still generating revenue, and still demanding parts that keep them running at peak efficiency.

The 0414703002 directly influences:

Fuel economy - precise metering means every drop counts

Power output - optimized atomization supports complete combustion

Emissions compliance - accurate delivery reduces particulates and NOx

Service longevity - Bosch's robust construction provides consistent performance over extended duty cycles

 

Q1: Can I replace just one injector, or do I need to replace all six?
You can replace a single injector, but replacing all six as a matched set is the recommended approach for engines showing performance issues. A single new injector paired with five worn ones can create imbalances in fuel delivery. The "S" suffix (R414703002S) designates a factory-matched six-pack for the 14.0L engine.

Q2: What are the warning signs that my 0414703002 is failing?
Common symptoms include loss of power or sluggish throttle response under load, excessive black or white smoke at idle or acceleration, rough idle or misfires, increased fuel consumption with no other fault codes, and hard starting or extended cranking times.

Q3: Is the remanufactured version as good as new?
Bosch-authorized remanufactured injectors are restored to like-new condition using OE-spec components and typically come with a 12-month unlimited mileage warranty. They represent a cost-effective alternative to new units. However, a new injector offers zero service history and eliminates any uncertainty about previous wear or contamination.

Q4: What's the core charge, and how does it work?
A refundable core charge is applied to remanufactured injectors to encourage the return of used units for rebuilding. The core charge is refunded to your original payment method once an acceptable core has been received within the specified return window.

Q5: Does this injector work with biodiesel blends?
Bosch designs its injectors to accommodate a range of diesel formulations. However, higher biodiesel blends (above B20) can affect seal materials over time. Consult your vehicle manufacturer's fuel recommendations and Bosch's technical bulletins for specific guidance on biodiesel compatibility with EUI injectors.