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John Deere 420 Parts

18 categories · 118 total parts

Keep your John Deere 420 running with quality replacement parts from Eastman Ag Parts. We stock 118+ parts across 18 categories — from Bearings, Clutch Parts, Cooling Systems, Engine Parts — all sourced to OEM specifications. Same-day shipping before 2 PM ET from Eastman, GA.

John Deere420
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HEADLAMP ASSY. (6 VOLT) — Part #EAP-100145
HEADLAMP ASSY. (6 VOLT)EAP-100145
Fits John Deere 40, 420, 50, 60, 70D, 720, 730, 80, 820(2, 830(2...
Ready to Ship
$61.99
Free shipping
BAIL & NUT SED. BOWL — Part #EAP-100194
BAIL & NUT SED. BOWLEAP-100194
Fits John Deere 40, 420, 430, 50, 520, 530, 60, 620, 630, 70, 720...
Ready to Ship
$10.99
Free shipping
RADIATOR CAP — Part #EAP-100203
RADIATOR CAPEAP-100203
Fits John Deere 1010, 420, 430, 435, 440, 50, 520, 530, 60, 620...
Ready to Ship
$28.99
Free shipping
SEALED BEAM — Part #EAP-101838
SEALED BEAMEAP-101838
Fits John Deere 1010, 1020, 1120, 1130, 1520, 1530, 1630, 1640...
Ready to Ship
$11.99
Free shipping
BATTERY CABLE — Part #EAP-103672
BATTERY CABLEEAP-103672
Fits John Deere 1010, 1020, 1030, 1040, 1120, 1130, 1140, 1350...
Ready to Ship
$17.99
Free shipping
BAIL & NUT — Part #EAP-103908
BAIL & NUTEAP-103908
Fits John Deere 40, 420, 430, M
Ready to Ship
$8.99
Free shipping
SEAT HIGH BACK YLW — Part #EAP-104358
SEAT HIGH BACK YLWEAP-104358
Fits John Deere 110, 112, 120, 1200, 140, 200, 208, 210, 212, 214...
Ready to Ship
$179.99
Free shipping
ALL SPECIAL UTILITY TRI-CYCLE & ROW CROP UTILITY
BRAKE DISC — Part #EAP-104502
BRAKE DISCEAP-104502
Fits John Deere 1010, 40, 420, 430, 440
Ready to Ship
$89.99
Free shipping
ALL SPECIAL UTILITY TRICYLCLE & ROW CROP UTILITY
FENDER LH/RH — Part #EAP-104503
FENDER LH/RHEAP-104503
Fits John Deere 1010, 40, 420, 430, 435
Ready to Ship
$215.99
Free shipping
ALL HI-CROP STD. UTILITY & SPECIAL
BRAKE DISC — Part #EAP-104506
BRAKE DISCEAP-104506
Fits John Deere 1010, 320, 330, 40, 420, 430
Ready to Ship
$81.99
Free shipping
TRANS. DISC: 10" — Part #EAP-104509
TRANS. DISC: 10"EAP-104509
Fits John Deere 320, 330, 40, 420, 430, 435, M, MC, MI, MT
Ready to Ship
$197.99
Free shipping
NEW PRESSURE PLATE (10") — Part #EAP-104511
NEW PRESSURE PLATE (10")EAP-104511
Fits John Deere 105, 320, 330, 40, 420, 430, 435, 440, 45, 55, 95, M, MC, MI, MT
Ready to Ship
$294.99
Free shipping
VOLTAGE REG. — Part #EAP-104515
VOLTAGE REG.EAP-104515
Fits John Deere 320, 330, 40, 420, 430, 440, M
Ready to Ship
$41.99
Free shipping
PTO HOUSING — Part #EAP-104516
PTO HOUSINGEAP-104516
Fits John Deere 1010, 420, 430, 435
Ready to Ship
$231.99
Free shipping
ALL W/ ADJ AXLES
TIE ROD TUBE — Part #EAP-104517
TIE ROD TUBEEAP-104517
Fits John Deere 1010, 320, 330, 40, 420, 430, M, MC, MT
Ready to Ship
$112.99
Free shipping
ALL ROW CROP UTILITY
TIE ROD; LONG — Part #EAP-104518
TIE ROD; LONGEAP-104518
Fits John Deere 420, 430
Ready to Ship
$112.99
Free shipping
WATER PUMP — Part #EAP-104521
WATER PUMPEAP-104521
Fits John Deere 320, 330, 40, 420, 430, 440
Ready to Ship
$275.99
Free shipping
ALL STD AXLES
SEAL — Part #EAP-104524
SEALEAP-104524
Fits John Deere 1010, 320, 330, 40, 420, 430, 435, 440
Ready to Ship
$16.99
Free shipping
STRAINER FUEL — Part #EAP-104525
STRAINER FUELEAP-104525
Fits John Deere 1010, 320, 330, 40, 420, 430, 440, M...
Ready to Ship
$31.99
Free shipping
CABLE TACHOMETER — Part #EAP-104528
CABLE TACHOMETEREAP-104528
Fits John Deere 420, 430, 8440, 8630, 8640
Ready to Ship
$40.99
Free shipping
ALL W/ GAS ENGINE 1956-1959
MUFFLER — Part #EAP-104529
MUFFLEREAP-104529
Fits John Deere 330, 420, 430, 440
Ready to Ship
$113.99
Free shipping
S/N 100000>
PTO DISC 9" (AUBURN) — Part #EAP-104532
PTO DISC 9" (AUBURN)EAP-104532
Fits John Deere 420, 430, 435
Ready to Ship
$271.99
Free shipping
BOTTOM CUSHION WD YLW — Part #EAP-104541
BOTTOM CUSHION WD YLWEAP-104541
Fits John Deere 320, 330, 40, 420, 430, 435, 440, M, MC, MT
Ready to Ship
$78.99
Free shipping
ALL W/ STD FRONT AXLE
TIE ROD LONG — Part #EAP-104553
TIE ROD LONGEAP-104553
Fits John Deere 1010, 320, 330, 40, 420, 430
Ready to Ship
$84.99
Free shipping
BEARING BALL — Part #EAP-104554
BEARING BALLEAP-104554
Fits John Deere 2510, 2520, 3020, 320, 330, 350, 350B, 40, 4020...
Ready to Ship
$36.99
Free shipping
ALL W/ STD FRONT AXLE
TIE ROD RH THREAD — Part #EAP-104555
TIE ROD RH THREADEAP-104555
Fits John Deere 1010, 320, 330, 40, 420, 430, 435, M / Massey...
Ready to Ship
$29.99
Free shipping
CLUTCH DRIVEN PLATE — Part #EAP-104641
CLUTCH DRIVEN PLATEEAP-104641
Fits John Deere 320, 329, 329GN-01, 329LN-01, 330, 420, 430, 55...
Ready to Ship
$126.99
Free shipping
RELEASE BEARING 2.0625"ID — Part #EAP-104967
RELEASE BEARING 2.0625"IDEAP-104967
Fits John Deere 105, 2510, 2520, 3020, 3300, 4000, 400G, 4010...
Ready to Ship
$36.99
Free shipping
RELEASE BEARING — Part #EAP-104974
RELEASE BEARINGEAP-104974
Fits John Deere 1010, 1020, 1520, 1530, 2010, 2020, 2030, 2040...
Ready to Ship
$51.99
Free shipping
ADJ. LIFT LINK COMPLETE — Part #EAP-105001
ADJ. LIFT LINK COMPLETEEAP-105001
Fits John Deere 1010, 320, 330, 40, 420, 430
Ready to Ship
$160.99
Free shipping
NON-ADJ. LIFT LINK COMP. — Part #EAP-105002
NON-ADJ. LIFT LINK COMP.EAP-105002
Fits John Deere 1010, 320, 330, 40, 420, 430
Ready to Ship
$65.99
Free shipping
IGNITION COIL - 6/12 VOLT — Part #EAP-105025
IGNITION COIL - 6/12 VOLTEAP-105025
Fits John Deere 1010, 1020, 2010, 2020, 3010, 3020, 320, 323W...
Ready to Ship
$26.99
Free shipping
BATTERY CABLE — Part #EAP-105715
BATTERY CABLEEAP-105715
Fits John Deere 320, 40, 420, M
Ready to Ship
$21.99
Free shipping
ALL SN <139999 & SN 140000> W/ HD PROTECTIVE EQUIP INSTALLED
RADIATOR — Part #EAP-105716
RADIATOREAP-105716
Fits John Deere 420, 430, 440
Ready to Ship
$551.99
Free shipping
MUFFLER ADAPTER — Part #EAP-105725
MUFFLER ADAPTEREAP-105725
Fits John Deere 320, 330, 420, 430, 440
Ready to Ship
$44.99
Free shipping
ALL W/ GAS ENGINE SN 135025>
MUFFLER — Part #EAP-105727
MUFFLEREAP-105727
Fits John Deere 1010, 320, 330, 420, 430, 435, 440
Ready to Ship
$69.99
Free shipping
ALL SN 140000>
RADIATOR — Part #EAP-105728
RADIATOREAP-105728
Fits John Deere 420, 430
Ready to Ship
$541.99
Free shipping
BATTERY CABLE — Part #EAP-105734
BATTERY CABLEEAP-105734
Fits John Deere 1010, 320, 330, 40, 420, 430
Ready to Ship
$17.99
Free shipping
S/N 100000>
TRANS. DISC: 11" ORGANIC — Part #EAP-105778
TRANS. DISC: 11" ORGANICEAP-105778
Fits John Deere 420, 430, 435 / Case-IH / International 1026...
Ready to Ship
$209.99
Free shipping
TUNE UP KIT — Part #EAP-105785
TUNE UP KITEAP-105785
Fits John Deere 1010, 105, 114W, 116W, 12, 2010, 215, 215A, 25...
Ready to Ship
$9.99
Free shipping
CONDENSER — Part #EAP-105788
CONDENSEREAP-105788
Fits John Deere 1010, 2010, 3010, 3020, 40, 4000, 4010, 4020, 420...
Ready to Ship
$4.99
Free shipping
POINT SET — Part #EAP-105789
POINT SETEAP-105789
Fits John Deere 1010, 2010, 3010, 40, 4010, 420, 430, M, MC, MT
Ready to Ship
$9.99
Free shipping
PP 8.5" STEERING CLUTCH — Part #EAP-105811
PP 8.5" STEERING CLUTCHEAP-105811
Fits John Deere 1010, 40, 40C, 420, 430, 440, MC
Ready to Ship
$274.99
Free shipping
RELEASE BEARING — Part #EAP-105831
RELEASE BEARINGEAP-105831
Fits John Deere 1010, 1020, 1520, 2010, 2020, 2030, 2240, 2440...
Ready to Ship
$45.99
Free shipping
DISC DRIVEN (ROCKFORD) — Part #EAP-106004
DISC DRIVEN (ROCKFORD)EAP-106004
Fits John Deere 40, 420, 430
Ready to Ship
$362.99
Free shipping
BOWL & GASKET SEDIMENT — Part #EAP-107100
BOWL & GASKET SEDIMENTEAP-107100
Fits John Deere 40, 420, 430, M
Ready to Ship
$6.99
Free shipping
ALL W/ 60" DECK
BLADE-MOWER XHT 20-1/2" — Part #EAP-111920
BLADE-MOWER XHT 20-1/2"EAP-111920
Fits John Deere 160, 2210, 261, 400, 4000, 4010, 420, 430, 60...
Ready to Ship
$27.99
Free shipping
SPARK PLUG — Part #EAP-119833
SPARK PLUGEAP-119833
Fits John Deere 1010, 105, 112, 120, 140, 200, 2010, 210, 212...
Ready to Ship
$3.99
Free shipping
Sold in packages of 4

Frequently Asked Questions — John Deere 420 Parts

What John Deere 420 parts does Eastman Ag Parts carry?

Eastman Ag Parts stocks 118+ quality replacement parts for the John Deere 420 across 18 categories, including Bearings, Clutch Parts, Cooling Systems, Engine Parts. We carry parts for engine, drivetrain, hydraulic, electrical systems, and more.

How fast does Eastman Ag Parts ship John Deere 420 parts?

Orders placed before 2 PM ET ship the same business day. We ship from Eastman, GA and most continental US customers receive their John Deere 420 parts within 2–5 business days. Orders over $299 under 25 lbs qualify for free shipping.

Are John Deere 420 parts OEM quality?

Yes. All John Deere 420 parts sold by Eastman Ag Parts meet or exceed OEM specifications. Family-owned since 1974, we stand behind every part we sell with a 30-day hassle-free return policy.

Where can I find John Deere 420 Bearings parts?

Browse John Deere 420 Bearings parts at eastmanagparts.com/john-deere/420?cat=bearings.

Where can I find John Deere 420 Clutch Parts parts?

Browse John Deere 420 Clutch Parts parts at eastmanagparts.com/john-deere/420?cat=clutch-parts.

Where can I find John Deere 420 Cooling Systems parts?

Browse John Deere 420 Cooling Systems parts at eastmanagparts.com/john-deere/420?cat=cooling-systems.

Where can I find John Deere 420 Engine Parts parts?

Browse John Deere 420 Engine Parts parts at eastmanagparts.com/john-deere/420?cat=engine-parts.