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John Deere Final Tier 4 EPA Industrial Engines

JD4G IHR

3.9L Industrial Diesel Engine

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63-129 kW (84-173 hp)

Features

Wastegated turbocharger

Wastegated turbochargers are designed to develop more airflow at lower engine speeds to improve low-speed torque.

Exhaust filters

This engine utilizes a catalyzed exhaust filter that contains a diesel oxidation catalyst (DOC) and a diesel particulate filter (DPF).

Selective catalytic reduction (SCR)

This engine features an SCR system that utilizes a urea-based additive, sometimes referred to as diesel exhaust fluid (DEF).

High-pressure common-rail (HPCR) and engine control unit (ECU)

The HPCR fuel system provides variable common-rail pressure and higher injection pressures. It also controls fuel injection timing and provides precise control for the start, duration, and end of injection.

Compact size

Smaller space claim
Simplifies installation

Engine performance

Multiple rated speeds to further reduce noise and improve fuel economy
Higher level of peak torque
Optional power bulge

Rear gear train

The engine features a rear gear train, which produces excellent direct power and options up to two rear aux drives and provide quiet operation.

Additional features

Gear-driven auxiliary drives
750 hour minimum
Self-adjusting poly-vee fan drive
Engine mounted or remote mounted aftertreatment
Optional rear PTO
Single overhead cam

Specifications

Emissions Certifications

EPA Final Tier 4	-
EU Stage V	-

General engine data

Model	JD4G IHR
Number of cylinders	4
Displacement-- L (cu in)	3.9 (238)
Engine Type	In-line, 4-cycle
Aspiration	Turbocharged and air-to-air aftercooled
Length - mm (in)	823 (32)
Width-- mm (in)	655 (26)
Height-- mm (in)	844 (33)
Weight, dry - kg (lb)	<474 kg (<1045 lb)

Performance data range

Rated power	63-129 kW (84-173 hp)
Peak power	129 kW (173 hp)
Application Rating	Continuous, Heavy Duty, Intermittent
Peak torque	700 Nm (516 lb-ft)
Power bulge	Up to 8%
Torque rise	Up to 34%

JD4G IHR | Industrial Diesel Engine | John Deere