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John Deere 644C Parts

11 categories · 43 total parts

Keep your John Deere 644C running with quality replacement parts from Eastman Ag Parts. We stock 43+ parts across 11 categories — from Cooling Systems, Engine Overhaul Kits, Engine Parts, Front Axle/Steering Parts — all sourced to OEM specifications. Same-day shipping before 2 PM ET from Eastman, GA.

John Deere644C
SEAL KIT WATER PUMP — Part #EAP-104716
SEAL KIT WATER PUMPEAP-104716
Fits John Deere 1020, 1520, 1530, 190E, 2020, 2030, 210C, 24...
Ready to Ship
$10.99
Free shipping
SEALED BEAM — Part #EAP-104778
SEALED BEAMEAP-104778
Fits John Deere 1040, 1140, 2010, 2040, 2150, 2155, 2240, 2255...
Ready to Ship
$14.99
Free shipping
THERMOSTAT 180' — Part #EAP-105044
THERMOSTAT 180'EAP-105044
Fits John Deere 110, 120, 120C, 160LC, 200LC, 230LC, 2630, 2640...
Ready to Ship
$13.99
Free shipping
VOLTAGE REGULATOR — Part #EAP-105170
VOLTAGE REGULATOREAP-105170
Fits John Deere 300D, 3020, 310D, 315D, 340D, 4000, 4020, 4030...
Ready to Ship
$11.99
Free shipping
GAUGE TEMPERATURE — Part #EAP-105723
GAUGE TEMPERATUREEAP-105723
Fits John Deere 340D, 350, 350B, 350C, 350D, 355D, 380, 410B...
Ready to Ship
$138.99
Free shipping
ALL ESN <336698
COOLER OIL — Part #EAP-105946
COOLER OILEAP-105946
Fits John Deere 4050, 4250, 444, 4440, 4450, 4630, 4640, 4650...
Ready to Ship
$226.99
Free shipping
ISOLATER (RUBBER) — Part #EAP-105983
ISOLATER (RUBBER)EAP-105983
Fits John Deere 444, 444C, 444CH, 444D, 544, 544A, 544B, 544C...
Ready to Ship
$65.99
Free shipping
RELAY ASSEMBLY — Part #EAP-106091
RELAY ASSEMBLYEAP-106091
Fits John Deere 4030, 4040, 4050, 4230, 4240, 4250, 440C, 4430...
Ready to Ship
$16.99
Free shipping
SWITCH PRESSURE — Part #EAP-106100
SWITCH PRESSUREEAP-106100
Fits John Deere 1020, 1040, 1140, 1350, 1520, 1550, 1640, 1750...
Ready to Ship
$11.99
Free shipping
BEARING BALL — Part #EAP-132100
BEARING BALLEAP-132100
Fits John Deere 444, 444C, 444CH, 444D, 544, 544A, 544B, 544C...
Ready to Ship
$18.99
Free shipping
NEEDLE BEARING — Part #EAP-132130
NEEDLE BEARINGEAP-132130
Fits John Deere 1020, 1520, 2020, 2030, 2440, 2510, 2520, 2630...
Ready to Ship
$4.99
Free shipping
COUPLING — Part #EAP-134805
COUPLINGEAP-134805
Fits John Deere 1040, 1140, 1350, 1550, 1640, 1750, 1840, 1850...
Ready to Ship
$17.99
Free shipping
COUPLING HYD PUMP DRIVE — Part #EAP-134806
COUPLING HYD PUMP DRIVEEAP-134806
Fits John Deere 1040, 1140, 1640, 1840, 2040, 2040S, 210C, 2140...
Ready to Ship
$19.99
Free shipping
SOLENOID — Part #EAP-141448
SOLENOIDEAP-141448
Fits John Deere 3020, 340D, 344E, 4000, 4020, 4030, 4040, 4050...
Ready to Ship
$62.99
Free shipping
TURBOCHARGER — Part #EAP-141591
TURBOCHARGEREAP-141591
Fits John Deere 4250, 4350, 4430, 4450, 4630, 4640, 4650, 4840...
Ready to Ship
$562.99
Free shipping
PUMP FUEL — Part #EAP-141613
PUMP FUELEAP-141613
Fits John Deere 4050, 4055, 4250, 4440, 4450, 4455, 4640, 4650...
Ready to Ship
$149.99
Free shipping
FREEZE PLUG HEATER; 1 5/8 — Part #EAP-141706
FREEZE PLUG HEATER; 1 5/8EAP-141706
Fits John Deere 2250, 2350, 2355, 2450, 2550, 2555, 2630, 2650...
Ready to Ship
$218.99
Free shipping
FUEL LINE; LEAK-OFF — Part #EAP-141836
FUEL LINE; LEAK-OFFEAP-141836
Fits John Deere 4040, 4040S, 4050, 4240, 4240S, 4250, 4440, 4450...
Ready to Ship
$115.99
Free shipping
HYD. PUMP OVERHAUL KIT — Part #EAP-141858
HYD. PUMP OVERHAUL KITEAP-141858
Fits John Deere 310B, 3140, 4000, 4020, 4040, 410, 4230, 4240...
Ready to Ship
$82.99
Free shipping
ENGINE OIL PUMP — Part #EAP-142233
ENGINE OIL PUMPEAP-142233
Fits John Deere 4050, 4240, 4250, 4440, 4450, 4555, 4560, 4640...
Ready to Ship
$324.99
Free shipping
CRANKSHAFT W/GEAR — Part #EAP-142472
CRANKSHAFT W/GEAREAP-142472
Fits John Deere 4000, 4010, 4020, 4040, 4050, 4055, 4230, 4240...
Ready to Ship
$2493.99
Freight only
ALL 6.466T W/ SN 253373>
MAJOR OVERHAUL KIT — Part #EAP-142909
MAJOR OVERHAUL KITEAP-142909
Fits John Deere 4250, 4440, 4450, 4640, 4650, 5460, 5720, 5730, 6...
Ready to Ship
$1976.99
Free shipping
ALL SN 233593-317858
MAJOR OVERHAUL KIT — Part #EAP-142911
MAJOR OVERHAUL KITEAP-142911
Fits John Deere 4840, 4850, 5720, 5730, 6, 6.466A, 644C, 690C...
Ready to Ship
$1781.99
Free shipping
GASKET; THERMOSTAT COVER — Part #EAP-143377
GASKET; THERMOSTAT COVEREAP-143377
Fits John Deere 330LCR, 4050, 4055, 4240, 4250, 4255, 4320, 4430...
Ready to Ship
$6.99
Free shipping
GASKET INTAKE MANIFOLD — Part #EAP-143417
GASKET INTAKE MANIFOLDEAP-143417
Fits John Deere 330CLC, 370C, 4050, 4055, 4240, 4250, 4255, 4320...
Ready to Ship
$5.99
Free shipping
792DLC
PLUG OIL PAN DRAIN — Part #EAP-143706
PLUG OIL PAN DRAINEAP-143706
Fits John Deere 3020, 4000, 4010, 4020, 4040, 4050, 4230, 4240...
Ready to Ship
$21.99
Free shipping
FILTER ELEMENT — Part #EAP-143745
FILTER ELEMENTEAP-143745
Fits John Deere 1830, 2030, 2130, 2350, 2440, 2520, 2550, 2630...
Ready to Ship
$7.99
Free shipping
CLAMP FUEL LINE BOOT — Part #EAP-143904
CLAMP FUEL LINE BOOTEAP-143904
Fits John Deere 1020, 1030, 1040V, 1120, 1130, 1140V, 1530, 1630...
Ready to Ship
$1.99
Free shipping
Sold in packages of 25
MANIFOLD EXHAUST (REAR) — Part #EAP-144078
MANIFOLD EXHAUST (REAR)EAP-144078
Fits John Deere 4050, 4050E, 4240S, 4250, 4350, 4430, 4440, 4450...
Ready to Ship
$154.99
Free shipping
TUBE OIL COOLER BYPASS — Part #EAP-144187
TUBE OIL COOLER BYPASSEAP-144187
Fits John Deere 4040, 4040S, 4050, 4055, 4230, 4240, 4240S, 4250...
Ready to Ship
$34.99
Free shipping
HOSE LOWER ENGINE OIL CO — Part #EAP-144190
HOSE LOWER ENGINE OIL COEAP-144190
Fits John Deere 4320, 4520, 4620, 4630, 4640, 4650, 4840, 4850...
Ready to Ship
$10.99
Free shipping
STUD; 3/8" X 1-1/2" — Part #EAP-144414
STUD; 3/8" X 1-1/2"EAP-144414
Fits John Deere 4050, 4240, 4250, 4320, 4430, 4440, 4450, 4520...
Ready to Ship
$8.99
Free shipping
ALL 6466 ENGINE
MANIFOLD EXHAUST (FRONT) — Part #EAP-144466
MANIFOLD EXHAUST (FRONT)EAP-144466
Fits John Deere 4050, 4050E, 4240S, 4250, 4350, 4430, 4440, 4450...
Ready to Ship
$249.99
Free shipping
CAPSCREW CONN ROD 3" — Part #EAP-144616
CAPSCREW CONN ROD 3"EAP-144616
Fits John Deere 1177, 1188, 1270D, 1470D-Wheeled, 3010, 3020...
Ready to Ship
$4.99
Free shipping
Sold in packages of 4
CUSHION HYD PUMP DRIVE — Part #EAP-144718
CUSHION HYD PUMP DRIVEEAP-144718
Fits John Deere 1040, 1140, 1140F, 1350, 1550, 1640, 1640F, 1750...
Ready to Ship
$10.99
Free shipping
HYD PUMP SHAFT — Part #EAP-144728
HYD PUMP SHAFTEAP-144728
Fits John Deere 310B, 3140, 4000, 4020, 4040, 410, 4230, 4240...
Ready to Ship
$184.99
Free shipping
STEERING WHEEL — Part #EAP-148257
STEERING WHEELEAP-148257
Fits John Deere 1020, 1520, 1530, 2020, 2030, 2040, 210C, 2240...
Ready to Ship
$61.99
Free shipping
O-RING; 2/PACK — Part #EAP-148580
O-RING; 2/PACKEAP-148580
Fits John Deere 1424, 1525, 160GLC, 210L, 2440, 2640, 2940...
Ready to Ship
$2.99
Free shipping
Sold in packages of 2
KIT VALVE & SLEEVE; HYD. — Part #EAP-151819
KIT VALVE & SLEEVE; HYD.EAP-151819
Fits John Deere 1830, 2030, 2130, 2350, 2440, 2510, 2520, 2550...
Ready to Ship
$25.99
Free shipping
Diesel Heater, John Deere RE235938 — Part #EAP-204874
Diesel Heater, John Deere RE235938EAP-204874
Fits John Deere 1177, 1188, 3020, 4000, 4010-54, 4020, 4040, 4050...
Ready to Ship
$112.99
Free shipping
Engine Heater, John Deere DZ102076 — Part #EAP-204875
Engine Heater, John Deere DZ102076EAP-204875
Fits John Deere 210C, 2250, 2350, 2355, 2450, 250D, 2550, 2555...
Ready to Ship
$205.99
Free shipping
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No Image
FUEL/WATER SEPARATOREAP-125798
Fits John Deere 1170, 1654, 1854, 344E, 444C, 444D, 444E, 444G...
Ready to Ship
$62.99
Free shipping
Sold in packages of 6
[ ]
No Image
FUEL/WATER SEPARATOREAP-126030
Fits John Deere 1170, 1654, 1854, 344E, 444C, 444D, 444E, 444G...
Ready to Ship
$57.99
Free shipping
Sold in packages of 12

Frequently Asked Questions — John Deere 644C Parts

What John Deere 644C parts does Eastman Ag Parts carry?▾

Eastman Ag Parts stocks 43+ quality replacement parts for the John Deere 644C across 11 categories, including Cooling Systems, Engine Overhaul Kits, Engine Parts, Front Axle/Steering Parts. We carry parts for engine, drivetrain, hydraulic, electrical systems, and more.

How fast does Eastman Ag Parts ship John Deere 644C 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 644C parts within 2–5 business days. Orders over $299 under 25 lbs qualify for free shipping.

Are John Deere 644C parts OEM quality?▾

Yes. All John Deere 644C 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 644C Cooling Systems parts?▾

Browse John Deere 644C Cooling Systems parts at eastmanagparts.com/john-deere/644c?cat=cooling-systems.

Where can I find John Deere 644C Engine Overhaul Kits parts?▾

Browse John Deere 644C Engine Overhaul Kits parts at eastmanagparts.com/john-deere/644c?cat=engine-overhaul-kits.

Where can I find John Deere 644C Engine Parts parts?▾

Browse John Deere 644C Engine Parts parts at eastmanagparts.com/john-deere/644c?cat=engine-parts.

Where can I find John Deere 644C Front Axle/Steering Parts parts?▾

Browse John Deere 644C Front Axle/Steering Parts parts at eastmanagparts.com/john-deere/644c?cat=front-axle-steering-parts.