John Deere 8450 Tractor Parts
8450 parts and accessories
The John Deere 8450, manufactured from 1981 to 1986, was a powerful and popular tractor among farmers needing robust tillage capabilities. Powered by a 300 HP diesel engine and delivering substantial PTO horsepower, the 8450 offered reliable performance in demanding agricultural applications. Its articulated frame and advanced hydraulics made it a favorite for large-scale row crop operations.
The John Deere 8450 was introduced in 1981 as part of John Deere's lineup of high-horsepower, four-wheel-drive tractors. Production continued through 1986. This model featured a John Deere 6466A six-cylinder turbocharged diesel engine, delivering approximately 300 horsepower. The engine had a displacement of 466 cubic inches. The 8450 came standard with a 12-speed Quad Range transmission, offering a wide range of gear ratios for various field conditions. The PTO horsepower was rated at 240 hp, and it featured a 1000 RPM PTO shaft. Hydraulic capacity was significant, with a flow rate around 30 GPM, powering multiple remote hydraulic valves. The 3-point hitch was a Category III, capable of lifting substantial implements for tillage and planting. Commonly used for row crop farming, hay production, and heavy tillage operations, the 8450 distinguished itself from other models with its larger engine and increased hydraulic capacity compared to smaller tractors in the John Deere range. Its articulated design provided enhanced maneuverability, and its robust construction ensured longevity in demanding farming environments.
Specifications
| Engine | John Deere 6466A 300 HP 466 ci Diesel |
|---|---|
| PTO HP | 240 HP @ 1000 RPM |
| Transmission | Quad Range 12-speed |
| Hydraulics | 30 GPM, 4 remotes |
| 3-Point Hitch | Category III, 8,700 lbs |
| Fuel Capacity | 150 gallons |
| Weight | 24,700 lbs |
| Years Produced | 1981-1986 |
Maintenance Tips
- Change engine oil and filter every 250 hours using a high-quality diesel engine oil and a genuine John Deere or equivalent filter.
- Inspect and maintain hydraulic fluid levels and filters regularly to prevent contamination and ensure optimal hydraulic system performance. Change hydraulic fluid per manufacturer recommendations (typically every 1000-1500 hours).
- Use clean, high-quality diesel fuel and replace fuel filters according to the service schedule to prevent fuel system problems. Inspect fuel lines for cracks or leaks.
- Before seasonal storage, properly prepare the tractor by draining fluids, adding fuel stabilizer, and protecting against corrosion to ensure easy start-up and longevity.
History & Background
The John Deere 8450 was a significant addition to John Deere's four-wheel-drive tractor lineup in the early 1980s. Designed to meet the increasing demands of large-scale farming operations, it offered a substantial increase in power and hydraulic capacity. Its success contributed to John Deere's reputation for producing reliable and high-performance agricultural equipment.
Frequently Asked Questions
What engine is in the John Deere 8450?
The John Deere 8450 is equipped with a John Deere 6466A six-cylinder turbocharged diesel engine, producing approximately 300 horsepower.
What is the PTO horsepower on a 8450?
The PTO horsepower of the John Deere 8450 is rated at 240 hp, and it utilizes a 1000 RPM PTO shaft.
What oil filter fits the 8450?
The recommended oil filter for the John Deere 8450 is typically a John Deere AR51741 or equivalent. Cross-references include Wix 51794, Baldwin B232, and Fleetguard LF3349.
What are common parts needed for the 8450?
Common wear parts for the John Deere 8450 include engine oil filters, fuel filters, hydraulic filters, fan belts, hydraulic seals, steering components, clutch parts, and various bushings and bearings in the driveline.

AR31946 - Brake Valve Overhaul Kit
SKU: AR31946
1098 in stock

AR28488 - Fiber Brake Pad (3/Bag)
SKU: AR28488
534 in stock
RE156640 - Oil Restriction Sensor
SKU: RE156640
34 in stock
RE15018 - Dampener Pulley
SKU: RE15018
172 in stock

RE12180 - PTO / Eng Speed Sensor; Magnetic Pickup
SKU: RE12180
126 in stock

RE11410 - Valve Rotator
SKU: RE11410
288 in stock

R83021 - Exhaust Manifold Gasket
SKU: R83021
2162 in stock

R83020 - Exhaust Manifold Gasket
SKU: R83020
707 in stock

R79606 - Tee Fitting
SKU: R79606
259 in stock

R79605 - Grommet
SKU: R79605
5681 in stock

R79604 - Injector NUT
SKU: R79604
200 in stock

R78702 - Intake Valve (Std) Insert
SKU: R78702
79 in stock

R74008 - Connecting Rod Bushing
SKU: R74008
257 in stock

R71918 - Pan Gasket
SKU: R71918
124 in stock

R70475 - 6.531T GASKET
SKU: R70475
Out of stock

R69418 - 6.531T GASKET
SKU: R69418
Out of stock

R66452 - Connecting Rod Capscrew
SKU: R66452
2048 in stock

R64840 - Injector Washer
SKU: R64840
Out of stock

R62952 - Engine Oil Pump Tube
SKU: R62952
33 in stock

R60724 - Connecting Rod Bushing
SKU: R60724
12 in stock
R57771 - Piston 1.874 Pin
SKU: R57771
82 in stock

R56995 - Exhaust (Front) Manifold
SKU: R56995
29 in stock

R55078 - 3/8" X 1-1/2" Stud
SKU: R55078
91 in stock

R55058 - Exhaust (.015") Valve
SKU: R55058
54 in stock
