John Deere 8400 2wd forage harvester Specs (2018-2026)

The John Deere 8400 2wd forage harvester (2018-2026) stands out for typical engine power at 532 hp (397 kW), while low travel speed comes in at 12.4 mph (20 km/h). It also has transport width of 11.5 ft (3.5 m).
Specification profile

2018-2026

Engine power: 532 hp (397 kW)Travel speed: 12.4 mph (20 km/h)Transport width: 11.5 ft (3.5 m)Max. Pick-up Width: 9.84 ft (3 m)
532 hp (397 kW)Engine power
12.4 mph (20 km/h)Travel speed
11.5 ft (3.5 m)Transport width
9.84 ft (3 m)Max. Pick-up Width
8.37 ft (2.55 m)Min. Pick-up Width
12.8 ft (3.89 m)Transport height
21.3 ft (6.5 m)Transport length
3.57 US gal (13.5 L)Displacement
How it compares

Low, average or high?

Engine power

Average

532 hp (397 kW)
Low 211 hp (157 kW)Typical 515 hp (384 kW)High 912 hp (680 kW)

Engine power is close to the typical figure.

Travel speed

Low

12.4 mph (20 km/h)
Low 12.4 mph (20 km/h)Typical 17.8 mph (28.7 km/h)High 24.9 mph (40 km/h)

Travel speed is well below the typical figure.

Transport width

Above average

11.5 ft (3.5 m)
Low 7.91 ft (2.41 m)Typical 10.5 ft (3.2 m)High 12.1 ft (3.7 m)

Transport width is above the typical figure.

Transport height

Average

12.8 ft (3.89 m)
Low 9.81 ft (2.99 m)Typical 12.5 ft (3.8 m)High 13.1 ft (3.98 m)

Transport height is close to the typical figure.

Transport length

Average

21.3 ft (6.5 m)
Low 14.8 ft (4.5 m)Typical 22.9 ft (6.98 m)High 28.2 ft (8.59 m)

Transport length is close to the typical figure.

Displacement

Below average

3.57 US gal (13.5 L)
Low 2.38 US gal (9 L)Typical 4.22 US gal (16 L)High 6.4 US gal (24.2 L)

Displacement is below the typical figure.

Visual overview

Key measurements

Measurements

Related measurements grouped for faster scanning.

Max. Pick-up Width9.84 ft (3 m)
Min. Pick-up Width8.37 ft (2.55 m)

Overall size

The main published dimensions shown together at a glance.

Transport length21.3 ft (6.5 m)
Transport height12.8 ft (3.89 m)
Transport width11.5 ft (3.5 m)
Equipment

Features & equipment

Published equipment and feature availability for this model.

Air BrakesNO
Air conditioningYES
All-wheel DriveNO
CabinYES
Metal DetectorNO
Overload SafetyNO
Rollover ProtectionNO
Overview

Model information

Manufacturer John Deere
Model 8400 2wd forage harvester
Model year / production 2018-2026
Full specifications

Technical details

Performance

Engine power532 hp (397 kW)
Travel speed12.4 mph (20 km/h)

Dimensions

Max. Pick-up Width9.84 ft (3 m)
Min. Pick-up Width8.37 ft (2.55 m)
Transport height12.8 ft (3.89 m)
Transport length21.3 ft (6.5 m)
Transport width11.5 ft (3.5 m)

Capacity & weight

Overload SafetyNo

Engine & drivetrain

Displacement3.57 US gal (13.5 L)
Emission levelTier 4 f/EU V
Engine manufacturerJohn Deere
Engine type6135H2014
Number of cylinders6.0
All-wheel DriveNo
Transmission TypeA

Setup & fitment

Back Tyres620/70 R30
Front Tyres900/60 R42

Features

Air conditioningYes

Other specifications

Model series8000
Air BrakesNo
BrakesS
CabinYes
Metal DetectorNo
Rollover ProtectionNo
SteeringHH