Expected to be in Stock March 2027
Hard top cab enclosure that will fit only the 4200 4300 and 4400 compact utility tractor models. Installation time will take roughly three to four hours. There will be no holes to drill, the cab mounts use existing holes.
This item will only work with the 3 exact John Deere models listed above. This does not fit John Deere CUT Models 4210, 4310, 4320 or 4410.
Fully enclosed cab with an ABS plastic hard top. Clear shatter resistant Lexan plastic is used in the rear curtain and side doors. For maximum visibility the windshield is safety glass and includes a manual windshield wiper. Forward inclination of the windshield minimizes glare and contact with falling snow and rain. Doors are hinged with latches so getting in and out of the cab is easy and quick.
John Deere 4200, 4300 and 4400 Hardtop Cab 40121
Cold wind can make a short job feel long.
Rain can soak your coat. Snow can blow
right at your face. Yet the work must
still get done. So, add Original Tractor Cab
40121 to your John Deere 4200, 4300
or 4400 compact tractor.
This hardtop cab helps shield you
from rain, snow, sleet and wind.
Plus, the cab has a safety-glass
windshield with a manual wiper.
Clear side and rear panels help
you see the work area.
Cab 40121 fits only the John Deere
4200, 4300 and 4400 compact utility
tractor models. It does not fit
the 4210, 4310, 4320 or 4410.
So, check your model before you buy.
Original Tractor Cab makes this
enclosure in the USA. Also, the
frame uses holes that are already
on the tractor. Normal installation
needs no drilling and takes
about three to four hours.
John Deere Hardtop Cab 40121 Product Specifications
Cab Model and Compatible Tractors
Cab model: 40121.
Product type: Hardtop weather enclosure.
Tractor fit: John Deere 4200, 4300 and 4400.
Excluded models: 4210, 4310, 4320 and 4410.
Manufacturer: Original Tractor Cab Co., Inc.
Country of manufacture: United States.
Roof, Windows and Doors
Roof: ABS plastic hardtop.
Windshield: Safety glass.
Windshield wiper: Manual wiper included.
Side door windows: Clear, shatter-resistant Lexan.
Rear curtain: Clear, shatter-resistant Lexan.
Doors: Hinged doors with latches.
Mounting: Existing tractor mounting holes.
Installation time: About three to four hours.
Why Exact Model Fit Matters
John Deere made more than one
compact tractor series. Some models
have close names. Yet the frames
and controls may not match.
So, use Cab 40121 only
on a listed model. A 4210,
4310, 4320 or 4410 needs
its own fit check.
Hardtop Cab Protection for Rain, Snow and Wind
Help Stay Dry in the Rain
Rain can start while you haul
soil or work in the yard.
So, the ABS hardtop helps
block rain from above.
Clear panels add more cover
near the seat.
Also, the safety-glass windshield
helps block direct rain.
The manual wiper can help
clear water from the glass.
Yet the cab may not
seal out all rain.
More Cover During Snow Removal
Snow can blow back as
you clear a drive or lane.
Then, cold wind can push
it toward your face.
So, Cab 40121 helps block
direct snow and wind.
The hard roof adds cover
from above. Plus, the
clear panels help you
see around the tractor.
Still, stop work when
snow blocks your view.
Help Shield Against Sleet
Sleet can make a short job
feel cold and wet.
So, the cab adds a
weather barrier around the seat.
The roof helps block
sleet that falls from above.
However, ice can still form
on the glass and ground.
Therefore, use care when
you enter or leave the cab.
Reduce Direct Cold Wind
Wind can chill you fast
on an open compact tractor.
So, the cab helps cut
direct wind near your body.
This can make winter chores
feel less harsh.
Yet Cab 40121 does not
have a standard heater.
Dress for the weather
each time you work.
Use Care During Hail and Severe Storms
The hardtop can help block
some direct contact with
light falling hail.
Yet hail can still damage
the roof and windows.
So, seek safe shelter
when a severe storm begins.
Never use this cab
as a storm shelter.
Weather Cover Through the Seasons
Spring may bring cold rain.
Fall can bring wet leaves.
Then, winter may bring snow.
So, Cab 40121 can add
weather cover in many seasons.
The John Deere 4200, 4300
and 4400 can serve
many land care jobs.
Also, the cab helps reduce
direct exposure to bad weather.
Original Tractor Cab 40121 Features and Benefits
ABS Plastic Hardtop Roof
Cab 40121 has an ABS plastic roof.
So, it helps block rain
and snow from above.
The hardtop forms part
of the full weather enclosure.
Yet the roof is not
a falling-object guard.
Never rely on it
to stop limbs or debris.
Safety-Glass Front Windshield
A clear front view is key
when you drive a tractor.
So, Cab 40121 has
a safety-glass windshield.
Glass helps you see
the path ahead.
The windshield leans forward.
This design helps reduce
glare and direct contact
with falling rain and snow.
Manual Windshield Wiper Included
Rain and wet snow can
block your front view.
So, Cab 40121 comes
with a manual wiper.
It can help clear
water from the glass.
Yet a manual wiper
cannot clear all ice.
Stop and clean the glass
when your view becomes poor.
Clear Lexan Side Door Windows
The side doors use clear,
shatter-resistant Lexan plastic.
So, you can look to
the sides of the tractor.
This helps near fences,
trees and work tools.
Also, the clear panels
let light into the cab.
Yet they are not
shields against flying debris.
Clear Rear Curtain
Cab 40121 has a clear
Lexan rear curtain.
So, you can look behind
the tractor as you work.
This helps when you back up.
Keep the rear panel clean.
Also, look around before
you reverse the machine.
Hinged Doors with Latches
The cab has hinged doors
with latches. So, you can
get in and out with ease.
The latches help keep
the doors shut during use.
Check each latch before work.
Also, keep the door path
clear of tools and debris.
No-Drill Cab Mounting
Cab 40121 uses holes
that are already on
the John Deere tractor.
So, normal installation needs
no new holes in the frame.
However, each bracket must fit
as the guide shows.
Never force a mount
or alter a factory guard.
Made in the USA
Original Tractor Cab makes
Cab 40121 in the USA.
Our company began in 1939.
So, this cab carries on
a long line of
American-made weather products.
John Deere 4200, 4300 and 4400 Cab Fitment
John Deere 4200 Hardtop Cab
The John Deere 4200 is
a compact utility tractor.
It can serve lawn, farm
and land care jobs
with the right tools.
So, Cab 40121 adds
weather cover to this model.
Yet check all added
tools and controls
before you install the cab.
John Deere 4300 Hardtop Cab
The John Deere 4300 is
a larger compact tractor.
It can handle many
jobs on a farm or lot.
So, Cab 40121 helps
shield its operator
from rain, snow and wind.
Also, the clear windows
help you see around
the work area.
Check all cab mounts
before you drive.
John Deere 4400 Hardtop Cab
The John Deere 4400 has
diesel power for
many land care jobs.
So, a weather cab can
help during cold
or wet work days.
Cab 40121 fits this model.
Yet added tools may
change the space near
the operator area.
Check the full tractor setup.
Does Not Fit John Deere 4210
The 4210 is not
a listed fit for Cab 40121.
So, do not use this cab
on a John Deere 4210.
Does Not Fit John Deere 4310
The 4310 has a different
model design. Therefore,
Cab 40121 does not fit
the John Deere 4310.
Does Not Fit John Deere 4320
The 4320 is also
outside the listed fit group.
So, do not order Cab 40121
for a John Deere 4320.
Does Not Fit John Deere 4410
The 4410 is not
the same as the 4400.
So, Cab 40121 does not
fit the John Deere 4410.
Check the Tractor Before You Buy
Older tractors may have
new seats, lights or tools.
So, inspect the full
operator area before purchase.
Also, check the model tag.
Never choose a cab
from the tractor color
or model shape alone.
John Deere Cab 40121 Installation and Care
Plan Three to Four Hours for Installation
Original Tractor Cab lists
about three to four hours
for cab installation.
So, set aside time
to fit the frame,
roof, doors and windows.
The real time may vary
with tools and experience.
Also, take time to check
each bracket before use.
Read the Cab 40121 Installation Manual
First, park the tractor
on level ground.
Next, lower all tools
and stop the engine.
Then, lay out the
cab parts and hardware.
Follow the Cab 40121 guide
in our
Original Tractor Cab installation manual library
.
Also, check each mount
before you drive.
Check Tractor Controls
The cab must leave room
for the steering wheel,
pedals and lift controls.
So, test each control
before you start work.
Also, check the doors
and safe exit path.
Never alter a factory
safety part to fit the cab.
Keep the Glass Windshield Clean
Mud and salt can
block the front view.
So, clean the glass
as the guide directs.
Also, check the manual wiper
before wet weather work.
Never use a worn wiper
on dirty glass.
Clear ice before
you move the blade.
Care for the Lexan Windows
Dirt can scratch clear plastic.
So, rinse loose grit
before you clean the panels.
Use the care method
in the cab guide.
Avoid rough brushes
and harsh cleaners.
Also, keep sharp tools
away from the plastic.
Check Hinges, Latches and Hardware
Tractor vibration can
loosen hardware over time.
Therefore, check the frame,
hinges and latches often.
Tighten loose parts
as the guide directs.
Also, look for wear
before each long job.
Measure Cab Height Before Storage
A hardtop cab adds
height to the tractor.
So, check garage doors,
sheds and low limbs.
Measure the full machine
after the cab is in place.
Never guess at clearance
from the tractor seat.
Buy John Deere 4200, 4300 and 4400 Cab 40121 Direct
Original Tractor Cab makes
Cab 40121 for three
exact John Deere models.
So, buying direct connects
you with the company
behind the enclosure.
You can review fit,
manuals and product details
on our website.
Also, our team can help
with cab questions.
Compare Other John Deere Tractor Cabs
If you own a different
compact tractor, see our
John Deere 790 and 3005 Hardtop Cab
.
That product serves
a different tractor group.
Owners of newer 2 Series
tractors can review the
John Deere 2032R and 2038R Hardtop Cab 40371
.
So, check the exact model
before you buy.
Order Cab 40121 from the Manufacturer
Cab 40121 has an
ABS hardtop roof,
safety-glass windshield,
manual wiper, clear Lexan
windows and hinged doors.
Plus, it uses existing
tractor mounting holes.
So, normal installation
needs no drilling.
Before checkout, confirm
your tractor is a
John Deere 4200, 4300 or 4400.
Then, check the live price,
stock and shipping terms
on this product page.
For help with cab fit,
call Original Tractor Cab
at 800-247-5305.
John Deere 4200, 4300 and 4400 Tractor Specifications
John Deere made the 4200, 4300 and 4400
as part of its 4000 Compact Series.
These tractors date to the late 1990s
and early 2000s. Yet many still serve
farms, homes and large lots today.
All three models use diesel engines.
Plus, each model came with a range
of drive and tool options. So,
check your exact tractor before
you order parts or service supplies.
John Deere 4200 Engine and Horsepower
The John Deere 4200 has a
three-cylinder Yanmar diesel engine.
Its engine has 1.2 liters
of displacement. Deere lists
gross engine power at 26.3 horsepower.
The engine uses liquid cooling.
Also, it runs at a rated
speed of 2,700 rpm.
So, keep the cooling system
clean during long work days.
John Deere 4200 Transmission
The 4200 came with gear
and hydrostatic drive options.
So, the controls can vary
from one tractor to the next.
A hydrostatic model uses
fluid power to change speed.
By contrast, a gear model
uses a manual drive system.
Check the model tag
before you buy service parts.
John Deere 4200 PTO and Hitch
The 4200 has a rear PTO
for compatible tools.
It also has a
three-point hitch.
So, owners can use
the right rear tools
for land care jobs.
Yet each tool must match
the tractor's PTO speed
and lift rating.
Use the Deere manual
for the full limits.
John Deere 4300 Engine and Horsepower
The John Deere 4300 uses
a three-cylinder Yanmar diesel.
Its engine has about
1.5 liters of displacement.
Deere lists 32.2 gross horsepower.
Also, the engine uses
liquid cooling and
a rated speed of 2,700 rpm.
So, check the radiator
and air filter often.
John Deere 4300 Transmission
The 4300 came with
several drive options.
These include gear
and hydrostatic versions.
So, the way you
change speed may vary.
Also, some models have
different gear ranges.
Check the tractor manual
for the right fluid
and service schedule.
John Deere 4300 Power Steering
The 4300 has power steering.
So, it can help reduce
steering effort during work.
This can help with
loader and yard jobs.
Yet steering parts
still need care.
Check the fluid and
hoses as Deere directs.
John Deere 4300 PTO and Three-Point Hitch
The 4300 has a rear PTO.
It also uses a
rear three-point hitch.
So, it can run
compatible rear tools.
These may include
a mower, tiller
or other land tool.
Yet each tool must
match the tractor.
John Deere 4400 Engine and Horsepower
The John Deere 4400 uses
a three-cylinder Yanmar diesel.
Its engine has about
1.6 liters of displacement.
Deere's technical data lists
37 gross horsepower.
The engine uses liquid cooling.
Also, its rated speed
is 2,700 rpm.
So, keep the cooling
and air systems clean.
John Deere 4400 Transmission
The 4400 came with
gear and hydrostatic
drive options. So,
the controls may vary
by tractor setup.
Check the drive type
before you buy fluid
or repair parts.
Also, use the
correct Deere service guide.
John Deere 4400 Power Steering
The 4400 has power steering.
So, it can help
during loader work
and tight turns.
Yet safe speed matters
on rough or wet ground.
Slow down near people,
trees and work tools.
John Deere 4400 PTO and Hitch
The 4400 has a
rear PTO and
three-point hitch.
So, it can use
a range of rear tools.
Also, some tractors
may have extra PTO
or hydraulic options.
Check the full setup
before you attach a tool.
John Deere 4200, 4300 and 4400 Fuel Capacity
Deere lists a fuel tank
capacity of 10 US gallons
for the 4200, 4300
and 4400 compact tractors.
So, each model has
a tank for diesel fuel.
Yet fuel care still matters.
Use clean diesel fuel
and follow the
Deere service guide.
John Deere 4200, 4300 and 4400 Hydraulic Systems
These tractors use
hydraulic power for
steering, lift and
other tractor functions.
So, clean fluid
is key to long service.
Deere lists about
6.3 US gallons of
transmission and hydraulic
fluid for gear models.
Hydrostatic models use
about 6.9 US gallons.
However, check the
exact service guide
before you add fluid.
Also, use the
fluid type Deere lists.
John Deere 4200, 4300 and 4400 Front Loaders
These tractors can use
compatible front loaders.
So, owners can move
soil, mulch, gravel
and other loose loads.
Yet a loader can
change tractor balance.
Use the right ballast
and follow Deere's
safe load limits.
John Deere 4200, 4300 and 4400 Snow Removal
The 4000 Compact Series
can use compatible
snow removal tools.
These may include
front blades and snowblowers.
So, owners can clear
drives and work lanes.
Yet snow tools may
throw ice, rocks
and other debris.
Cab 40121 helps block
direct snow and wind.
It does not serve
as a debris shield.
John Deere 4200, 4300 and 4400 Tire and Drive Options
These tractors came
with different tire
and drive setups.
Some use two-wheel drive.
Others use four-wheel drive.
Also, tire type
may vary with use.
So, check your tires
and traction needs
before each job.
Official John Deere 4000 Series Service Data
Deere provides fluid
and service data
in its
official John Deere 4000 Series capacities guide
.
This guide covers
the 4200, 4300 and 4400.
Official John Deere Operator Manuals
You can also use
the
official John Deere owner manual resources
to find care and
safety details for
your exact tractor.
These specs describe
the John Deere machines.
They do not replace
the tractor manual
or Cab 40121 fit guide.
The History of Original Tractor Cab Company Since 1939
Stanley Williams Starts with a Farm Need
Original Tractor Cab began in 1939.
Farmer Stanley Williams needed
more cover from harsh weather.
So, he made a cab
for his own tractor.
Other farmers saw his idea.
They too faced rain,
snow and cold wind.
As a result, they asked
for similar weather cabs.
From One Cab to a New Business
The first cab served
a clear farm need.
So, word of the
new design began to spread.
More farmers wanted
a way to stay
less exposed to the weather.
Stanley's work grew
into a new company.
Yet the main goal
stayed much the same.
Help people who work outdoors.
Original Tractor Cab During World War II
World War II brought
new needs for goods
and supplies. So,
the company changed
its work to help
the war effort.
Original Tractor Cab made
backpacks and other
goods for the military.
Then, after the war,
the company went back
to making weather cabs.
More Cabs for More Machines
Tractors and yard tools
changed through the years.
So, Original Tractor Cab
grew its product range.
New cabs served more
types of outdoor equipment.
Also, the company began
to make more parts
and cab accessories.
This helped owners
care for their products.
Snowblower Cabs for Winter Work
Snowblowers became common
at homes and work sites.
Yet their operators still
faced snow and cold wind.
So, the company added
snowblower weather enclosures.
These cabs help shield
the operator from
direct winter weather.
The same core idea
still guides the company.
Sunshades for Warm Weather
Cold weather was not
the only need.
Hot sun could make
long work days harsh.
Therefore, Original Tractor Cab
added sunshades
to its product range.
These shades help block
direct sun from above.
Also, they give owners
another way to add
comfort to outdoor work.
Three Generations of Family Work
The Williams family kept
the company going
through three generations.
Each new era brought
new tools and
new customer needs.
Yet the main goal
stayed much the same.
Make useful weather covers
for people who work outdoors.
Made in Arlington, Indiana
Original Tractor Cab is
based in Arlington, Indiana.
We take pride in
our long history
of American manufacturing.
Today, our range includes
tractor cabs, snowblower cabs,
mower enclosures, sunshades
and cab parts.
From Dealer Sales to Direct Online Orders
Dealers have helped us
reach owners for years.
Now, our website also
gives buyers a
direct way to shop.
So, you can review
product details, fit guides
and support from the maker.
Also, you can order
the cab that fits
your equipment.
Cab 40121 Carries On the Tradition
John Deere 4200, 4300
and 4400 tractors came
long after Stanley
made his first cab.
Yet rain, snow and
cold wind still make
outdoor work hard.
So, Cab 40121 brings
that old idea
to these compact tractors.
It helps shield
the operator from
harsh weather.
Read more on our
Original Tractor Cab company history page
.
Original Tractor Cab —
Made RIGHT in USA Since 1939!
John Deere 4200, 4300 and 4400 Cab 40121 FAQs
Which John Deere tractors fit Cab 40121?
Cab 40121 fits
the John Deere
4200, 4300 and 4400
compact utility tractors.
So, check your model
before you buy.
Does Cab 40121 fit the John Deere 4210?
No. The 4210
is not a
listed fit for
Cab 40121.
Does Cab 40121 fit the John Deere 4310?
No. The 4310
has a different
tractor design.
So, it does not
fit Cab 40121.
Does Cab 40121 fit the John Deere 4320?
No. The 4320
is not a
listed fit for
this cab.
Does Cab 40121 fit the John Deere 4410?
No. The 4410
is not the same
as the 4400.
So, Cab 40121
does not fit
the 4410.
Does the cab help block rain and snow?
Yes. The hardtop
and clear panels
help shield you
from direct rain,
snow, sleet and wind.
Yet the cab may
not seal out
all harsh weather.
Does Cab 40121 have a glass windshield?
Yes. The cab
comes with a
safety-glass windshield.
So, you do not
need to add
a glass upgrade.
Does the cab include a windshield wiper?
Yes. Cab 40121
comes with a
manual windshield wiper.
It can help
clear rain and
wet snow from glass.
Does the cab have clear side windows?
Yes. Clear,
shatter-resistant Lexan
plastic forms
the side door
windows and rear curtain.
So, you can
see through
the enclosure.
Does installation require drilling?
No. The cab
uses existing
tractor mounting holes.
So, normal installation
needs no new drilling.
How long does installation take?
Original Tractor Cab
lists about three
to four hours.
Yet the real time
may vary with
tools and experience.
Is Cab 40121 made in the USA?
Yes. Original Tractor Cab
makes this product
in the United States.
Also, the company
has made weather
products since 1939.
Is this a genuine John Deere OEM cab?
No. Original Tractor Cab
makes this aftermarket
weather enclosure.
It is not a
genuine John Deere
OEM product.
Does Cab 40121 protect from rollover or debris?
No. Cab 40121
provides limited
weather cover only.
It is not
a rollover guard,
debris shield
or safety cage.
Order Your John Deere 4200, 4300 or 4400 Cab 40121
Rain, snow and cold wind
can make tractor work hard.
So, add more weather cover
to your John Deere 4200,
4300 or 4400 compact tractor.
Cab 40121 has an
ABS hardtop roof,
safety-glass windshield,
manual wiper, clear
Lexan windows and
hinged doors.
Plus, the cab uses
existing tractor mounting holes.
So, normal installation
needs no drilling.
Buy direct from
Original Tractor Cab.
Check the live price,
stock and shipping
details on this page.
Non-OEM, Liability and California Proposition 65 Disclaimers
Aftermarket and Non-OEM Product Disclaimer
This is an aftermarket product
produced by Original Tractor
Cab Co., Inc. It is not
a genuine John Deere OEM item.
Original Tractor Cab Co., Inc.
is not affiliated with,
sponsored by or endorsed
by Deere & Company.
John Deere and related
model names belong to
their respective owners.
We use those names
only to identify
compatible equipment.
Weather Protection and Liability Disclaimer
This cab provides limited
weather protection only.
It is not a rollover
protective structure,
falling-object protective
structure, collision guard,
debris shield or certified
safety enclosure.
This product will only
help protect from weather
elements, not rollover,
collision, falling objects,
flying debris or other hazards.
Never rely on this cab
to prevent injury or death.
Keep all factory safety
parts in place.
Never remove, alter or bypass
a factory guard,
seat belt, ROPS
or safety control
to install the cab.
Always follow the John Deere
operator manual and
the Cab 40121
installation guide.
Also, make sure the cab
does not block steering,
pedals, loader controls,
visibility or safe exit.
Mowers, loaders and snow tools
can throw or move
dangerous objects.
So, keep people and pets
clear of the work area.
Never rely on the
cab windows as
a debris shield.
Engine exhaust contains
carbon monoxide and
other harmful gases.
Never run the tractor
in a closed or
poorly ventilated area.
Stop use if exhaust
fumes enter the cab.
Strong wind, ice,
snow and poor visibility
can make tractor work
unsafe. So, stop work
when you cannot see
or control the machine.
Use care on slopes
and uneven ground.
The cab may change
the machine's overall
height and wind exposure.
Therefore, check clearance,
stability and transport
needs before use.
California Proposition 65 Warning
WARNING:
Cancer and Reproductive Harm.
www.P65Warnings.ca.gov.
