John Deere 3420 Parts & Accessories

Q: How do I find the right part for my 3420?

Search by John Deere part number or browse by category on this page. Every part shown is matched to the John Deere 3420 by its compatible-models data.

1,949 parts and accessories that fit the John Deere 3420 — Drivetrain Parts. Genuine OEM and quality aftermarket, from an authorized John Deere dealer. Ship nationwide or pick up locally.

Shop 3420 parts by category

← All categories Drivetrain Parts (63)

Yoke, Metric

Part #54M4422

$36.02

John Deere

Clutch

Part #A-AL78494

$162.78

A&I Products

Carrier, Planetary Pinion

Part #A-L100242

$816.26

A&I Products

Ring Gear

Part #A-L101724

$668.13

A&I Products

Planetary Pinion

Part #A-L114784

$167.03

A&I Products

Flywheel Starter Ring

Part #A-R28811

$70.38

A&I Products

Clutch, New

Part #A-RE52508

$160.64

A&I Products

Clutch

Part #AL78494

$252.19

John Deere

Planet Pinion

Part #L100168

$1,553.34

John Deere

Planet Pinion Z=39

Part #L100241

$250.44

John Deere

Planet Pinion Carrier

Part #L100242

$1,230.29

John Deere

Ring Gear, Inner Spline T=80

Part #L101724

$819.55

John Deere

Planet Pinion Carrier

Part #L101726

$2,736.25

John Deere

Sheet

Part #L101812

$46.98

John Deere

Gear Sun

Part #L110235

$904.23

John Deere

Planet Pinion

Part #L110237

$235.75

John Deere

Planet Pinion

Part #L114784

$274.19

John Deere

Disk With Inner Spline

Part #L40130

$36.01

John Deere

Disk With Outer Spline

Part #L62419

$22.48

John Deere

Yoke

Part #L80053

$20.68

John Deere

Shaft, Idler Gear Lower

Part #R114194

$41.28

John Deere

Gear, Crankshaft

Part #R120631

$331.43

John Deere

Gear, Oil Pump Drive

Part #R120638

$312.51

John Deere

Gear, Balancer, LH Shaft

Part #R120639

$139.00

John Deere

Shaft, Idler Gear

Part #R120641

$239.32

John Deere

Shaft Key, Woodruff

Part #R133303

$4.54

John Deere

Ring Gear, Flywheel Ring

Part #R28811

$107.91

John Deere

Gear, Fuel Injection Pump

Part #R505472

$378.13

John Deere

Shaft Key, Special

Part #R505609

$2.81

John Deere

Gear, Upper Idler W/ Bushing

Part #RE508932

$349.72

John Deere

Gear, Lower Idler, W/ Bushing, RH

Part #RE56369

$365.77

John Deere

Outside U-Joint Fork

Part #T153720

$294.86

John Deere

Powershaft Shield

Part #Z102539

$130.21

John Deere

Powershaft Shield

Part #Z102540

$158.67

John Deere

Gear, Bevel

Part #Z72414

$515.70

John Deere

Housing

Part #Z77211

$2,114.83

John Deere

Drive Shaft

Part #A-L110236

$170.86

A&I Products

Planetary Pinion

Part #A-L110237

$117.14

A&I Products

Shaft, Front Axle (MFWD)

Part #A-L110240

$191.01

A&I Products

Ring Gear, MFWD Planetary

Part #A-L79729

$501.86

A&I Products

Vent

Part #AL32877

$28.38

John Deere

Shaft Pinion Z=16

Part #L110236

$600.55

John Deere

Gear Sun Z=16

Part #L110240

$353.49

John Deere

O-Ring, 7X1 LAN641 H4C

Part #L112761

$2,414.32

John Deere

Plate, Outer

Part #L35577

$59.49

John Deere

Shaft

Part #L39983

$126.23

John Deere

Disk With Inner Spline

Part #L40258

$35.81

John Deere

Disk With Inner Spline

Part #L40280

$71.15

John Deere

Gear Ring Z=98

Part #L79729

$736.38

John Deere

Input Clutch Disc

Part #T123033

$86.65

John Deere

Planet Gear

Part #T165415

$883.87

John Deere

Planet Carrier

Part #T165416

$2,161.75

John Deere

Gear, Dana 112.04.004.01

Part #Z101721

$348.25

John Deere

Planet Gear Nr. 112.06.006.03

Part #Z101765

$476.09

John Deere

Disk

Part #Z101790

$58.57

John Deere

Shifter

Part #Z72049

$831.82

John Deere

Gear, Bevel

Part #Z72407

$1,057.21

John Deere

Gear, Bevel

Part #Z72413

$847.55

John Deere

Gear, Sun

Part #Z72474

$1,381.77

John Deere

Disk, Outer Spline

Part #Z72517

$112.09

John Deere

Shop all 63 3420 parts →

John Deere 3420 parts — frequently asked

How many parts fit the John Deere 3420?

Koenig Marketplace lists 1,949 parts and accessories that fit the John Deere 3420, including drivetrain parts.

Are these genuine John Deere parts for the 3420?

Yes — Koenig is an authorized John Deere dealer, so you'll find genuine OEM John Deere parts alongside quality aftermarket options that fit the John Deere 3420.

How do I find the right part for my 3420?

Search by John Deere part number or browse by category above. Every part shown is matched to the John Deere 3420 by its compatible-models data.

Can I get 3420 parts shipped or pick them up locally?

Both. Koenig ships John Deere 3420 parts nationwide, and you can also pick up at one of Koenig's stores.

Parts for other John Deere models

John Deere 6130M John Deere 6140M John Deere 6620 John Deere 6110M John Deere S690 John Deere 1550 John Deere 8400 John Deere 8200 John Deere 670G John Deere 6120M John Deere W650 John Deere 9600