John Deere 9900 Self-Propelled Forage Harvesters
John Deere 9900
Average price
$452,590.2




5+
sold in last yearGeneral overview
The John Deere 9900 is a self-propelled forage harvester used in farm forage harvesting operations. It was produced from 2020 to 2023 and manufactured in the United States. The model is powered by a Liebherr D9512 engine with 24.2 L displacement and meets Tier 4 Final emissions requirements, placing it in a high-capacity self-propelled forage harvester class.
It uses a ProDriveâ„¢ system with manual and automatic differential lock for ground drive control. Key harvesting specifications include a 1,500 mm (4 ft 11 in) knife drum width and a 210 mm (8 in) feed roll frame opening. The feedrolls can be raised and lowered hydraulically, supporting crop intake during forage harvesting.
Year
2019, 2020, 2021, 2022, 2023
Country of manufacturing
United States
General specifications
Dimensions
Length
6,600 mm
~259.8 in
Engine Power
956 hp
Emission standard level
Tier 4 Final
Displacement
24,2 cu(m)
Tires front
Hydromechanical 4WD
Tires rear
Base: Heavy-duty gearbox (i=3.75); pump/motor displacement 85/80 cc. Optional: Extra heavy-duty gearbox (i=4.31); pump/motor displacement 110/90 cc.
Manufacturer
Liebherr
Ground drive type
ProDriveâ„¢ system
Differential lock
Manual and automatic
Rotor Diameter/Housing Width
0.56 m
Combine corn headers
560
Feed roll frame opening
210 mm
Feeding system/Feedrolls Number
Hydraulic raise and lower
Cutterhead type
6,600
Knife drum width
1,500 mm
Knife drum diameter
8, 10 or 12 rows mm
Speed at rated engine speed
956 hp
Rotary headers
620
Engine Model
D9,512
Additional specifications
Axles
20/25/30/40 km/h variants
Corn conditioner
4
Spout rotation, degrees
Dura-Drumâ„¢ cutterhead deg
Working height
850 mm
Propelling drive range
1,170 mm
Cutterhead housing width
Optional mm
Circle Diameter
830 mm
Transport Height
670 mm
John Deere 9900 Self-Propelled Forage Harvesters Listings
$509,120
Tier 4 Final
Liebherr
956 hp
1525 hours
Fergus Falls, United States
$179,500
8, 10 or 12 rows mm
670 mm
0.56 m
3534 hours
Jonesville, United States
$623,100
Dura-Drumâ„¢ cutterhead deg
560
620
757 hours
Scottsbluff, United States
$329,500
956 hp
24,2 cu(m)
1500 mm
1244 hours
Kent City, United States
$359,500
956 hp
8, 10 or 12 rows mm
Optional mm
1165 hours
Holland, United States
$539,500
956 hp
1500 mm
Optional mm
590 hours
Lagrange, United States
$509,500
670 mm
Tier 4 Final
Hydromechanical 4WD
620 hours
Three Rivers, United States
$415,000
Tier 4 Final
Liebherr
D9512
1133 hours
Sandusky, United States
$519,282
956 hp
1500 mm
Manual and automatic
938 hours
Yuma, United States
$541,900
ProDriveâ„¢ system
Hydromechanical 4WD
1500 mm
686 hours
Imperial, United States
Compare John Deere 9900 Self-Propelled Forage Harvester to other self-propelled forage harvesters
Not sure which equipment to choose? Use our comparison tool to easily compare equipment side by side based on key features.

John Deere 9900 Self-Propelled Forage Harvester
956 hp
6600 mm
Add model
Add model
No reviews yet
Be the first to review this model.
Leave a review. Get a promo code
Leave a review and receive a promo code for your next purchase.
No questions yet
Be the first to ask a question about this model and help other buyers learn more.
Heavy equipment insights from JumboBee
October 5, 2026
How to Choose the Right Excavator Bucket: Types, Sizes, and Contractor Buying Guide
This guide covers excavator bucket types, capacities, compatibility, and how to choose the right bucket for your jobsite.
September 28, 2026
Mini Excavator Buying Guide 2026: Best Models, Sizes and How to Choose
This guide breaks down everything you need to know about compact earthmoving equipment.
September 21, 2026
Types of Forklifts: Complete Guide to Classes, Uses, and Applications
This guide covers official forklift classes, physical machine variations, and load capacities.
August 25, 2026
Repair, Rebuild or Replace Heavy Equipment: 2026 Cost-Based Decision Guide
This guide provides a mathematical approach to help you decide what to do with your aging machinery in 2026.
July 31, 2026
How to Inspect Used Heavy Equipment Remotely: Practical Checklist for International Buyers
This article provides a practical, step-by-step guide for evaluating machinery without physical access.
July 10, 2026
New vs Used Heavy Equipment in 2026: Cost, Risk, ROI & When Each Option Wins
This guide explores new vs. used machinery investments, from costs and risks to financing and ROI.
Got Questions?
Our FAQ section covers everything from shipping and listing to buying with confidence.
Can't find what you're looking for?
Sign up and talk to an expert.
Most popular
What is the average price of a John Deere 9900?
No confirmed market price is supplied for the John Deere 9900. Check current listings and compare machine condition, location, and configuration.
What are the key advantages of the John Deere 9900?
The supplied specifications list a ProDriveâ„¢ system, manual and automatic differential lock, Hydromechanical 4WD, hydraulic feedroll raising and lowering, and a Dura-Drumâ„¢ cutterhead. Available axle variants include 20/25/30/40 km/h.
What type of engine does the 9900 use?
The supplied specifications list a Liebherr D9512 engine with Tier 4 Final emissions level.
How much horsepower does the 9900 have?
The supplied data does not confirm a horsepower rating for the 9900.
What fuel does the John Deere 9900 use?
The supplied data does not confirm the fuel type for the John Deere 9900.
What jobs is this Self-Propelled Forage Harvesters (SPFH) best suited for?
As a Self-Propelled Forage Harvester (SPFH), it is suited to forage-harvesting work. The supplied data also lists a hydraulic feeding system and Dura-Drumâ„¢ cutterhead, which are relevant to that application.
What is the expected lifespan of the 9900?
The supplied data does not provide an expected service-life estimate for the 9900. Assess maintenance records, operating hours, wear in the feeding and cutterhead systems, drivetrain condition, and overall machine condition.
What should a buyer check when purchasing a used Self-Propelled Forage Harvesters (SPFH)?
Inspect the engine, drivetrain, 4WD system, differential lock, feedroll operation, cutterhead, spout function, tires, and hydraulic systems. Review service records and test all operating functions. Verify the axle and gearbox configuration, as the supplied data lists multiple variants.


































































































