Zetor 8421

Name: Zetor 8421
Brand: Zetor

Power

84 hp

Production

2004-2007

Engine

Turbocharged diesel, 4-cylinder

Transmission

Syncromesh

Weight

7440 lbs [3374 kg]

Drive

2WD

80–100 HP 2000s

From the same series:

7441

8441

Introduction

Zetor 8421: Power and Reliability for Your Farm

Discover the robust 8421 tractor, a true workhorse from the Zetor 7441 and 8441 series. This machine is engineered to deliver exceptional performance and reliability, making it an indispensable partner for a wide range of agricultural tasks. With its powerful engine and versatile hydraulic system, the 8421 is ready to tackle any challenge your farm throws at it.

Engine Powerhouse

At the heart of the 8421 lies a formidable 4-cylinder, liquid-cooled, turbocharged diesel engine. This Zetor powerhouse boasts a displacement of 254 cubic inches (4.2 L) and delivers a strong 84 horsepower (62.6 kW) at a rated speed of 2200 RPM. Built with a 12-volt starter system, this engine is designed for efficiency and endurance.

Versatile PTO and Hydraulics

This tractor is equipped with an independent Rear PTO, offering both 540 and 1000 RPM options to match various implement requirements. The hydraulic system features an open-center design with a substantial total flow of 18 GPM (68.1 lpm) and a pump flow of 14 GPM (53.0 lpm), operating at a robust 2900 PSI (200.0 bar) and equipped with 3 control valves, ensuring smooth and powerful operation for your attached equipment.

Drivetrain and Control

The 8421 features a dependable two-wheel drive system, providing reliable traction for field operations. For operator comfort, a two-post folding ROPS is standard, with an optional cab available that includes air-conditioning, making long working days more pleasant. The rear hitch is a versatile Category II/I type with both position and draft control, capable of lifting an impressive 6830 lbs (3098 kg).

Flexible Transmission Options

Choose the transmission that best suits your operational needs. The 8421 offers a syncromesh transmission with 10 forward and 2 reverse gears, or a mechanical shuttle transmission providing 12 forward and 12 reverse gears. Both options utilize a durable 304.8mm hydraulic cerametallic disc clutch for smooth power delivery.

Robust Dimensions and Build

Built for stability and performance, the 8421 has a substantial wheelbase of 90 inches (228 cm) and an overall length of 152 inches (386 cm). Weighing in at 7440 lbs (3374 kg), it offers a solid foundation for demanding agricultural work. The standard tire sizes are 9.00-16 for the front and 16.9-34 for the rear.

Conclusion

"The Zetor 8421, produced between 2004 and 2007 in Brno, Czechoslovakia, stands out as a powerful, reliable, and versatile tractor. Its strong engine, efficient hydraulics, flexible transmission options, and robust construction make it an excellent choice for farmers looking for a dependable machine to enhance their productivity. This tractor is a testament to Zetor's commitment to quality and performance in agricultural machinery."

Introduction

Production Information of Zetor, 8421

The production information of the tractor (8421) includes details about its manufacturing.

Built in Brno, Czechoslovakia


Manufacturer	Zetor

Dimension and Tires Information of Zetor, 8421

This section sums up the dimension and tires information of the tractor.


Ground clearance	22 inches [55 cm]
Wheelbase	90 inches [228 cm]
Height (cab)	102 inches [259 cm]
Height (ROPS)	103 inches [261 cm]
Length	152 inches [386 cm]
Front tread	56 to 71 inches [142 to 180 cm]
Weight	7440 lbs [3374 kg]
Width	73 inches [185 cm]
Rear tread	56 to 71 inches [142 to 180 cm]


Ag front	9.00-16
Ag rear	16.9-34

Engine Specifications of Zetor, 8421

Get the specifications for the engine and if different options are available.

Zetor

Liquid-cooled

Turbocharged diesel

4-cylinder


Rated RPM	2200
Displacement	254 ci [4.2 L]
Starter volts	12
Power	84 hp [62.6 kW]

Transmission Information of Zetor, 8421Y

Discover all variants of transmission available for this tractor model.

Transmission variants 1


Type	Syncromesh
Gears	10 forward and 2 reverse
Clutch	304.8mm hydraulic cerametallic disc

Transmission variants 2


Type	Mechanical shuttle
Gears	12 forward and reverse
Clutch	304.8mm hydraulic cerametallic disc

10-speed syncromesh

12-speed mechanical shuttle

Mechanical Specs of Zetor, 8421Y

This section summarizes all mechanical information such as the brake system and other specifications.

Two-wheel drive

Two-post folding ROPS. Cab optional with air-conditioning.

Power Information of Zetor, 8421Y

Discover the power specifications and options available for this tractor model but also PTO (Power Take-off) information.


Rear PTO	Independent
Rear PTO Type	540/1000

Hydraulics Specifications of Zetor, 8421

Hydraulic system type, pressure, pump flow and valves.


Type	Open center
Total flow	18 gpm [68.1 lpm]
Pump flow	14 gpm [53.0 lpm]
Pressure	2900 psi [200.0 bar]
Valves	3

Three-Point Hitch of Zetor, 8421

Hitch category and rear/front lift capacity.


Rear Type	II/I
Control	Position and draft control
Rear lift	6830 lbs [3098 kg]

Frequently asked questions

How much horsepower does the Zetor 8421 have?

The Zetor 8421 delivers 84 HP.

What years was the Zetor 8421 produced?

The Zetor 8421 was produced in 2004-2007.

What engine does the Zetor 8421 have?

The Zetor 8421 is powered by a Turbocharged diesel, 4-cylinder engine.

What transmission does the Zetor 8421 use?

The Zetor 8421 uses a Syncromesh transmission.

How much does the Zetor 8421 weigh?

The Zetor 8421 weighs 7440 lbs [3374 kg].

Is the Zetor 8421 4WD?

The Zetor 8421 is available in 2WD.

More Zetor models

844184 HP · 2004 - 2009 801185 HP · 1968 - 1987 804585 HP · 1968 - 1987 864185 HP · 1999 - 2007 802082 HP · 2008 - 2011 804082 HP · 2008 - 2011 862082 HP · 1989 - 1999 864082 HP · 1989 - 1999

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