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John Deere
8 Series Tractors

John Deere 8RX 340

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Stay Focused and In Control All Day

When long days demand focus and precision, 8 Series tractors deliver an elevated operator experience with improved visibility, intuitive controls, and a refined cab environment. Everything is designed to reduce fatigue and simplify operation—so you can stay in control, maintain accuracy, and keep performance consistent from the first pass to the last.

Person in sunglasses seated inside a modern tractor cab in a large cultivated field showing a steering wheel, monitors, and equipment.
Put Power Down Efficiently Across Every Pass

Getting the most out of every acre means turning power into productivity. 8 Series tractors combine strong horsepower with traction and efficiency technologies that help reduce slip, maintain consistent speeds, and protect soil conditions. The result is more work done per hour, better fuel efficiency, and dependable performance across varying field conditions.

Green tractor pulling farm equipment across a freshly tilled field, viewed from a low ground-level angle. Rough soil fills the foreground, while the tractor operates under a cloudy sky in an open rural landscape.
Connect Your Tractor to the Rest of Your Operation

Productivity doesn’t stop at the cab - it extends across your entire operation. With integrated precision technology and connectivity through John Deere Operations Center, 8 Series tractors help you document work, monitor performance, and make informed decisions. Turn every pass into insight and plan your next move with greater confidence.

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Machine Configuration
Wheel or Track Configuration

4-Track

Engine
Engine Make

John Deere

Engine Model

JD9

Engine Family

VJDXL09.0333

Emissions Certifications

Final Tier 4

Displacement

549 cu in.

Displacement

9 L

Aspiration

Single, variable geometry turbo; air-to-air aftercooling and cooled exhaust gas recirculation

Number of Cylinders

6

Cylinder Liners

Wet-sleeve

Aftertreatment Type

Diesel oxidation catalyst (DOC)/diesel particulate filter (DPF)/selective catalytic reduction (SCR)

Rated Engine Speed

2100 rpm

Rated Engine Power

335 hp

Rated Engine Power

250 kW

Rated Engine Power

340 PS

Engine Torque at Rated Speed

1174 lb-ft

Engine Torque at Rated Speed

1592 Nm

Maximum Engine Power

369 hp

Maximum Engine Power

275 kW

Maximum Engine Power

374 PS

Maximum Engine Torque

At 1600: 1592 Nm / 1174 lb-ft

Power Bulge

10 %

Fuel Type

Diesel

Alternative Fuel Type

B30 Diesel Compatible

Torque Rise

40 %

Transmission
Transmission Type

Standard: e23™ PowerShift™ 40K, 40 km/h (24.9 mph); Optional: John Deere eAutoPowr™ EVT™ 40K, 0.05-42 km/h (0.03-26 mph)

Maximum Speed Forward

42 km/h (26 mph)

Minimum Speed Forward

0.05 km/h (0.03 mph)

Rear Power Take-Off (PTO)
PTO Category

Standard: 45 mm (1.75 in.) 20-spline, 1,000 rpm; Optional: 45 mm (1.75 in.), 20-spline, 1000 rpm capable of 35 mm (1.375 in.) 540/1000 rpm; 45 mm (1.75 in.) 20-spline, 1000/1000E rpm

Rated PTO Power

284 hp

Rated PTO Power

211 kW

Rated PTO Power

288 PS

Economy PTO Speeds

1000E rpm

Engine rpm at Rated PTO Speeds (540/1.000)

1810 / 1995

Engine rpm at Rated PTO Speeds (540E/1000/1.000E)

-- / 1995 / 1590

Engagement Method

Electrohydraulic with adjustable modulation

Number of Splines

20

Rear Hitch
Rear Hitch Category (SAE Designation)

Category 4N/3

Maximum Lift Capacity at 610-mm Behind Hitch Point

9072 kg / 20,000 lb

Lift Capacity Through Full Lift Range at 610-mm Behind Hitch Point

15000 / 20000 lb (6803 / 9072 kg)

Sensing Type

Electrohydraulic

Drawbar
Drawbar Category

Standard: Category 4 with heavy-duty support; Optional: Category 4

Maximum Vertical Load

Standard: 4,990 kg (11,000 lb); Optional: 2,245 kg (4,950 lb)

Hydraulics
Hydraulic System Type

Closed-center, pressure/flow compensated system with load sensing

Pump Rated Output

Standard: 85-cc pump: 227.1 L/min (60 gpm); Optional: 85-cc plus 35-cc dual pump: 318 L/min (84 gpm)

Number of Rear Selective Control Valves (SCVs)

Standard: 1.3-cm (1/2-in.) ISO couplers: 4; Optional: 1.3-cm (1/2-in.) ISO couplers: 5 and 6 available

Available Flow at a Single Rear SCV

1.3-cm (1/2-in.) couplers: 132 L/min (35 gpm)

Available Flow at Front SCVs

25 gpm

Available Flow at Front SCVs

96 L/min

SCV Control

Electronic

Front Axle
Front Axle Type

1700 Series MFWD

Front Axle Differential Lock

Full-locking electrohydraulic (actuated at same time as rear diff-lock)

Rear Axle
Rear Axle Type

Flange

Rear Differential Lock

Full-locking electrohydraulic

Final Drive

Inboard planetary

Steering & Brakes
Steering Type

Hydraulic power-steering with electric pump back-up

Tracks
Track Drive Type

Camso® AG 4500 (MICHELIN BIBTRACK 150) Positive Drive

Track Tread Spacing

1930.4 mm (76 in.), 2032 mm (80 in.), 2235.2 mm (88 in.), 3048 mm (120 in.)

Track Width

419 mm (16.5 in.), 457 mm (18 in.), 609 mm (24 in.), 762 mm (30 in.)

Number Of Mid Rollers

Front: Two, Rear: Three

Electrical System
Battery Voltage

12 V

Battery Cold Cranking Amps

1900 CCA

Alternator Capacity

200 amp / 330 amp optional

Working Lights

18–24 LED

Driving Lights

LED

Operator Station
Seat Suspension

Air seat

Degree of Seat Swivel, Left Hand

25 degree (angle)

Degree of Seat Swivel, Right Hand

40 degree (angle)

Cab Suspension

Four-post cab suspension

Instructional Seat

Standard

Primary Display

G5ᴾˡᵘˢ 12.8 in (325 mm)

Radio

AM/FM stereo with weatherband, remote controls, auxiliary input jack, four speakers and external antenna

Inner Cab Volume

114 cu ft

Inner Cab Volume

3.24 m³

Cab Glass Area

70.61 sq ft

Cab Glass Area

6.56 m²

Technology Integration
Guidance

Integrated AutoTrac™; Autonomy Ready (available in select regions)

Connectivity

JDLink™ hardware standard, activations, and Ethernet harnesses (availability dependent upon destination)

Remote Diagnostics

JDLink hardware standard

Capacities
Fuel Tank Capacity

244 gal.

Fuel Tank Capacity

924 L

Diesel Exhaust Fluid (DEF) Tank Capacity

9.8 gal.

Diesel Exhaust Fluid (DEF) Tank Capacity

37.2 L

Cooling System Capacity

11.2 gal.

Cooling System Capacity

42.3 L

Transmission - Hydraulic System

66.1 / 68.8 gal.

Transmission - Hydraulic System

250 / 260.6 L

Crankcase Oil Volume

7 gal.

Crankcase Oil Volume

26.6 L

Dimensions & Weights
Wheelbase

127.36 in.

Wheelbase

3235 mm

Base Machine Weight

43300 lb.

Base Machine Weight

19600 kg

Maximum Ballast Level

44100 lb.

Maximum Ballast Level

20000 kg

Maximum Permissible Weight

53000 lb.

Maximum Permissible Weight

24000 kg

Additional Information
Country of Manufacture

USA

Date Collected

4/3/2025