John Deere 8640 Parts
Looking for John Deere 8640 parts? You've come to the right place. At Wengers, we stock the parts you need to keep your 8640 running strong, so you can get back to work without the long wait times.
Search by Part Number
Shop Parts by Component
Click a component to view the parts we have in stock for your 8640
View All PartsAir Intake 17
Part #
Description
Condition
Stock
Price
R57518
COUPLING - TURBOCHARGE TO MANIFOLD COVER
R57518
COUPLING - TURBOCHARGE TO MANIFOLD COVER
Used
In Stock
$98.00
Brakes 11
Part #
Description
Condition
Stock
Price
Cab 6
Part #
Description
Condition
Stock
Price
Clutch 43
Part #
Description
Condition
Stock
Price
R57203
CLUTCH & TRANSFER PUMP DRIVE SHAFT
R57203
CLUTCH & TRANSFER PUMP DRIVE SHAFT
Used
In Stock
$65.00
R66623.A
CLUTCH REGULATING VALVE ASSEMBLY
R66623.A
CLUTCH REGULATING VALVE ASSEMBLY
Used
In Stock
$200.00
R66842.A
PRESSURE PLATE AND DISC ASSEMBLY
R66842.A
PRESSURE PLATE AND DISC ASSEMBLY
Used
In Stock
$200.00
Controls 3
Part #
Description
Condition
Stock
Price
Cooling & Heating System 17
Part #
Description
Condition
Stock
Price
Drawbars / Hitches 23
Part #
Description
Condition
Stock
Price
R63817
DRAWBAR REAR SUPPORT BRACKET - L.H.
R63817
DRAWBAR REAR SUPPORT BRACKET - L.H.
Used
In Stock
$659.00
R63816
DRAWBAR REAR SUPPORT BRACKET - R.H.
R63816
DRAWBAR REAR SUPPORT BRACKET - R.H.
Used
In Stock
$592.00
Electrical System 8
Part #
Description
Condition
Stock
Price
Engine - Diesel 37
Part #
Description
Condition
Stock
Price
HS3903
GASKET SET - CYLINDER HEAD
HS3903
GASKET SET - CYLINDER HEAD
New After Market
In Stock
$183.45
R32426.A
SPEED - HOUR METER DRIVE GEAR WITH HOUSING
R32426.A
SPEED - HOUR METER DRIVE GEAR WITH HOUSING
Used
In Stock
$100.00
RE29234
SPEED - HOUR METER DRIVE GEAR WITH HOUSING
RE29234
SPEED - HOUR METER DRIVE GEAR WITH HOUSING
Used
Out of Stock
Exhaust 8
Part #
Description
Condition
Stock
Price
Frame Or Chassis 8
Part #
Description
Condition
Stock
Price
Front Axle 2 Wheel Drive 1
Part #
Description
Condition
Stock
Price
Front Axle 4 Wheel Drive 35
Part #
Description
Condition
Stock
Price
R61422.A
PLANETARY CARRIER W/GEARS ASSEMBLY
R61422.A
PLANETARY CARRIER W/GEARS ASSEMBLY
Used
In Stock
$600.00
AR85308
U-JOINT GUARD - BOTTOM FRONT HINGE
AR85308
U-JOINT GUARD - BOTTOM FRONT HINGE
Used
Out of Stock
AR70478
U-JOINT GUARD - BOTTOM REAR HINGE
AR70478
U-JOINT GUARD - BOTTOM REAR HINGE
Used
In Stock
$96.00
AR70495
U-JOINT GUARD - CENTER REAR HINGE
AR70495
U-JOINT GUARD - CENTER REAR HINGE
Used
In Stock
$88.00
Fuel System 17
Part #
Description
Condition
Stock
Price
Hydraulic Systems 54
Part #
Description
Condition
Stock
Price
R65649
CLUTCH FILTER RELIEF VALVE HOUSING
R65649
CLUTCH FILTER RELIEF VALVE HOUSING
Used
In Stock
$418.00
R49335
CONTROL OPERATING LINK WITH PINS
R49335
CONTROL OPERATING LINK WITH PINS
Used
In Stock
$27.00
AR40676
CONTROL VALVE ADJUSTING CAM ASSEMBLY
AR40676
CONTROL VALVE ADJUSTING CAM ASSEMBLY
Used
In Stock
$22.00
R40915
LOAD SELECTOR OPERATING ARM - UPPER
R40915
LOAD SELECTOR OPERATING ARM - UPPER
Used
In Stock
$26.00
R66889.A
ROCKSHAFT CONTROL VALVE HOUSING ASSEMBLY
R66889.A
ROCKSHAFT CONTROL VALVE HOUSING ASSEMBLY
Used
In Stock
$475.00
R60081
ROCKSHAFT CONTROL VALVE HOUSING COVER
R60081
ROCKSHAFT CONTROL VALVE HOUSING COVER
Used
In Stock
$225.00
R60334
ROCKSHAFT CONTROL VALVE HOUSING COVER
R60334
ROCKSHAFT CONTROL VALVE HOUSING COVER
Used
In Stock
$222.00
R65146
ROCKSHAFT CONTROL VALVE HOUSING COVER
R65146
ROCKSHAFT CONTROL VALVE HOUSING COVER
Used
Out of Stock
Instrument Panel 13
Part #
Description
Condition
Stock
Price
PTO 17
Part #
Description
Condition
Stock
Price
R57310
LOWER PTO DRIVE GEAR BEARING COVER
R57310
LOWER PTO DRIVE GEAR BEARING COVER
Used
In Stock
$20.00
R57982.A
OUTPUT U-JOINT YOKE WITH QUILL ASSEMBLY
R57982.A
OUTPUT U-JOINT YOKE WITH QUILL ASSEMBLY
Used
In Stock
$495.00
Rear Axle 6
Part #
Description
Condition
Stock
Price
R61422.A
PLANETARY CARRIER W/GEARS ASSEMBLY
R61422.A
PLANETARY CARRIER W/GEARS ASSEMBLY
Used
In Stock
$600.00
Rear Differential 15
Part #
Description
Condition
Stock
Price
Seat 1
Part #
Description
Condition
Stock
Price
JD47SETFAB
SEAT AND BACK CUSHION SET
JD47SETFAB
SEAT AND BACK CUSHION SET
New After Market
In Stock
$386.85
Sheet Metal 20
Part #
Description
Condition
Stock
Price
Steering 21
Part #
Description
Condition
Stock
Price
R58459
FEEDBACK CYLINDER BRACKET - FRONT
R58459
FEEDBACK CYLINDER BRACKET - FRONT
Used
In Stock
$77.00
R58460
FEEDBACK CYLINDER BRACKET - REAR
R58460
FEEDBACK CYLINDER BRACKET - REAR
Used
In Stock
$66.00
Transmission 95
Part #
Description
Condition
Stock
Price
R66962
DRIVE SHAFT COLLAR - LOW & HIGH RANGE SYNCHRONIZER
R66962
DRIVE SHAFT COLLAR - LOW & HIGH RANGE SYNCHRONIZER
Used
Out of Stock
R63930
DRIVE SHAFT COLLAR - REVERSE RANGE DRIVE
R63930
DRIVE SHAFT COLLAR - REVERSE RANGE DRIVE
Used
In Stock
$80.00
R57947
DRIVE SHAFT COLLAR - REVERSE SHIFTER
R57947
DRIVE SHAFT COLLAR - REVERSE SHIFTER
Used
In Stock
$40.00
R67573
DRIVE SHAFT DRUM - SYNCHRONIZER HIGH RANGE
R67573
DRIVE SHAFT DRUM - SYNCHRONIZER HIGH RANGE
Used
Out of Stock
R67574
DRIVE SHAFT DRUM - SYNCHRONIZER LOW RANGE
R67574
DRIVE SHAFT DRUM - SYNCHRONIZER LOW RANGE
Used
Out of Stock
R61817
DRIVE SHAFT PINION - REVERSE RANGE
R61817
DRIVE SHAFT PINION - REVERSE RANGE
Used
In Stock
$125.00
R57290
DRIVE SHAFT QUILL - FRONT BEARING
R57290
DRIVE SHAFT QUILL - FRONT BEARING
Used
In Stock
$158.00
R58220
FRONT OUTPUT U-JOINT YOKE BEARING RETAINER
R58220
FRONT OUTPUT U-JOINT YOKE BEARING RETAINER
Used
In Stock
$91.00
R57310
LOWER PTO DRIVE GEAR BEARING COVER
R57310
LOWER PTO DRIVE GEAR BEARING COVER
Used
In Stock
$20.00
R66672
PINION SHAFT GEAR - SHIFTER REAR
R66672
PINION SHAFT GEAR - SHIFTER REAR
Used
In Stock
$144.00
R64667
SHIFTER CONTROL LATCH PIN BRACKET
R64667
SHIFTER CONTROL LATCH PIN BRACKET
Used
In Stock
$60.00
R64664
SHIFTER CONTROL LEVER GUIDE PLATE
R64664
SHIFTER CONTROL LEVER GUIDE PLATE
Used
In Stock
$59.00
AR81083
SHIFTER CONTROL LEVER SUPPORT - INNER
AR81083
SHIFTER CONTROL LEVER SUPPORT - INNER
Used
In Stock
$100.00
R64665
SHIFTER CONTROL RANGE SELECTOR QUADRANT
R64665
SHIFTER CONTROL RANGE SELECTOR QUADRANT
Used
In Stock
$158.00
R64666
SHIFTER CONTROL SPEED SELECTOR QUADRANT
R64666
SHIFTER CONTROL SPEED SELECTOR QUADRANT
Used
In Stock
$138.00
AR85308
U-JOINT GUARD - BOTTOM FRONT HINGE
AR85308
U-JOINT GUARD - BOTTOM FRONT HINGE
Used
Out of Stock
AR70478
U-JOINT GUARD - BOTTOM REAR HINGE
AR70478
U-JOINT GUARD - BOTTOM REAR HINGE
Used
In Stock
$96.00
AR70495
U-JOINT GUARD - CENTER REAR HINGE
AR70495
U-JOINT GUARD - CENTER REAR HINGE
Used
In Stock
$88.00
R58057
UPPER INPUT SHAFT OR PTO IDLER SHAFT BEARING COVER
R58057
UPPER INPUT SHAFT OR PTO IDLER SHAFT BEARING COVER
Used
In Stock
$50.00
Wheels & Tires 7
Part #
Description
Condition
Stock
Price