John Deere 644K Parts & Accessories

3,402 parts and accessories that fit the John Deere 644K — Hydraulic Parts. Genuine OEM and quality aftermarket, from an authorized John Deere dealer. Ship nationwide or pick up locally.

Shop 644K parts by category

← All categories Hydraulic Parts (630)

FITTING, PIPE CAP

FITTING, PIPE CAP

FITTING

PIPE NIPPLE

90 DEG ELBOW,O-RING FSF

90 DEG ELBOW,O-RING FSF

Part #: 38H1011

RUN TEE,O-RING FSF

RUN TEE,O-RING FSF

Part #: 38H1025

STRAIGHT THREAD RUN TEE,O-RING FSF

STRAIGHT THREAD RUN TEE,O-RING FSF

Part #: 38H1028

90 DEG SWIVEL ELBOW (SWE) ORFS

90 DEG SWIVEL ELBOW (SWE) ORFS

Part #: 38H1099

ADAPTER,O-RING FSF

ADAPTER,O-RING FSF

Part #: 38H1197

90 DEG ELBOW,O-RING FSF

90 DEG ELBOW,O-RING FSF

Part #: 38H1325

RUN TEE,O-RING FSF

RUN TEE,O-RING FSF

Part #: 38H1389

90 DEG ELBOW,O-RING FSF

90 DEG ELBOW,O-RING FSF

Part #: 38H1422

90 DEG ELBOW,O-RING FSF

90 DEG ELBOW,O-RING FSF

Part #: 38H1430

RUN TEE,O-RING FSF

RUN TEE,O-RING FSF

Part #: 38H1434

SWIVEL RUN TEE,O-RING FSF

SWIVEL RUN TEE,O-RING FSF

Part #: 38H1446

STRAIGHT THREAD RUN TEE,O-RING FSF

STRAIGHT THREAD RUN TEE,O-RING FSF

Part #: 38H1466

90 DEG LONG STRT THREAD ELBOW

90 DEG LONG STRT THREAD ELBOW

Part #: 38H1493

45 DEG STRAIGHT THREAD,O-RING FSF

45 DEG STRAIGHT THREAD,O-RING FSF

Part #: 38H1522

SWIVEL RUN TEE, O-RING FSF

SWIVEL RUN TEE, O-RING FSF

Part #: 38H1546

STRAIGHT THREAD RUN TEE, ORFS

STRAIGHT THREAD RUN TEE, ORFS

Part #: 38H1573

STUD STRAIGHT, ORFS (20-24 520120)

STUD STRAIGHT, ORFS (20-24 520120)

Part #: 38H1595

45 DEG STRAIGHT THREAD,O-RING FSF

45 DEG STRAIGHT THREAD,O-RING FSF

Part #: 38H1602

45 DEG SWIVEL ELBOW, ORFS SWE45

45 DEG SWIVEL ELBOW, ORFS SWE45

Part #: 38H1622

90 DEG ELBOW, ORFS(20-24 SDE)

90 DEG ELBOW, ORFS(20-24 SDE)

Part #: 38H1637

ADJ SD RUN T(8-6-6 SDRT)

ADJ SD RUN T(8-6-6 SDRT)

Part #: 38H1642

90 DEG ELBOW,O-RING FSF W/MET HEX

90 DEG ELBOW,O-RING FSF W/MET HEX

Part #: 38H3007

90 DEG ELBOW,O-RING FSF W/MET HEX

90 DEG ELBOW,O-RING FSF W/MET HEX

Part #: 38H3008

90 DEG ELBOW,O-RING FSF W/MET HEX

90 DEG ELBOW,O-RING FSF W/MET HEX

Part #: 38H3010

90 DEG ELBOW,O-RING FSF W/MET HEX

90 DEG ELBOW,O-RING FSF W/MET HEX

Part #: 38H3012

ADJ STUD RUN TEE,ORFS W/MET HEX

ADJ STUD RUN TEE,ORFS W/MET HEX

Part #: 38H3023

RUN TEE,FLAT SEALING FACE,W/MET HEX

RUN TEE,FLAT SEALING FACE,W/MET HEX

Part #: 38H3025

ADJ STUD RUN TEE,ORFS W/MET HEX

ADJ STUD RUN TEE,ORFS W/MET HEX

Part #: 38H3027

90 DEG ELBOW,O-RING FSF W/MET HEX

90 DEG ELBOW,O-RING FSF W/MET HEX

Part #: 38H3037

45 DEG SGT THD,ORFS, W/ MET HEX

45 DEG SGT THD,ORFS, W/ MET HEX

Part #: 38H3046

45 DEG SGT THD,ORFS, W/ MET HEX

45 DEG SGT THD,ORFS, W/ MET HEX

Part #: 38H3049

90 DEG ELBOW,O-RING FSF W/MET HEX

90 DEG ELBOW,O-RING FSF W/MET HEX

Part #: 38H3052

90 DEG ELBOW,O-RING FSF W/MET HEX

90 DEG ELBOW,O-RING FSF W/MET HEX

Part #: 38H3053

STUD STRAIGHT, ORFS W/METRIC HEX

STUD STRAIGHT, ORFS W/METRIC HEX

Part #: 38H3162

STUD STRAIGHT, ORFS W/METRIC HEX

STUD STRAIGHT, ORFS W/METRIC HEX

Part #: 38H3164

STUD STRAIGHT, ORFS W/METRIC HEX

STUD STRAIGHT, ORFS W/METRIC HEX

Part #: 38H3171

STUD STRAIGHT, ORFS W/METRIC HEX

STUD STRAIGHT, ORFS W/METRIC HEX

Part #: 38H3172

STUD STRAIGHT, ORFS W/METRIC HEX

STUD STRAIGHT, ORFS W/METRIC HEX

Part #: 38H3173

STUD STRAIGHT, ORFS W/METRIC HEX

STUD STRAIGHT, ORFS W/METRIC HEX

Part #: 38H3174

STUD STRAIGHT, ORFS W/METRIC HEX

STUD STRAIGHT, ORFS W/METRIC HEX

Part #: 38H3175

STUD STRAIGHT, ORFS W/METRIC HEX

STUD STRAIGHT, ORFS W/METRIC HEX

Part #: 38H3179

STUD STRAIGHT, ORFS W/METRIC HEX

STUD STRAIGHT, ORFS W/METRIC HEX

Part #: 38H3197

STUD STRGHT, LONG ORFS W/METRIC HEX

STUD STRGHT, LONG ORFS W/METRIC HEX

Part #: 38H3212

STUD STRAIGHT, ORFS W/METRIC HEX

STUD STRAIGHT, ORFS W/METRIC HEX

Part #: 38H3309

ADJ STUD RUN TEE,ORFS W/MET HEX

ADJ STUD RUN TEE,ORFS W/MET HEX

Part #: 38H3434

STUD STRAIGHT, ORFS W/METRIC HEX

STUD STRAIGHT, ORFS W/METRIC HEX

Part #: 38H3447

90 DEG UNION ELBOW (E), ORFS

90 DEG UNION ELBOW (E), ORFS

Part #: 38H5218

BULKHEAD UNION,(BHS)

BULKHEAD UNION,(BHS)

Part #: 38H5219

STUD STRAIGHT LG HX, ORFS (SDSLG)

STUD STRAIGHT LG HX, ORFS (SDSLG)

Part #: 38H5361

ADJ STUD RUN TEE (SDRT), ORFS

ADJ STUD RUN TEE (SDRT), ORFS

Part #: 38H5436

90 DEG ADJ STUD ELB LONG,ORFS(SDEL)

90 DEG ADJ STUD ELB LONG,ORFS(SDEL)

Part #: 38H5469

45 DEG ADJ STUD ELBOW (SDE45), ORFS

45 DEG ADJ STUD ELBOW (SDE45), ORFS

Part #: 38H5486

STC ST. FEM. TO INCH STUD (06-06)

STC ST. FEM. TO INCH STUD (06-06)

Part #: 62H1001

STC FEM ELB TO ADJ. STUD (06-06)

STC FEM ELB TO ADJ. STUD (06-06)

Part #: 62H1011

STC FEM ELB TO ADJ. STUD (08-08)

STC FEM ELB TO ADJ. STUD (08-08)

Part #: 62H1012

STC FEM.ELBOWTO SWIVEL ORFS(06-06)

STC FEM.ELBOWTO SWIVEL ORFS(06-06)

Part #: 62H1021

STC ST. FEM. TO INCH STUD (08-06)

STC ST. FEM. TO INCH STUD (08-06)

Part #: 62H1054

Shop all 630 644K parts →

John Deere 644K parts — frequently asked

How many parts fit the John Deere 644K?

Koenig Marketplace lists 3,402 parts and accessories that fit the John Deere 644K, including hydraulic parts.

Are these genuine John Deere parts for the 644K?

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 644K.

How do I find the right part for my 644K?

Search by John Deere part number or browse by category above. Every part shown is matched to the John Deere 644K by its compatible-models data.

Can I get 644K parts shipped or pick them up locally?

Both. Koenig ships John Deere 644K parts nationwide, and you can also pick up at one of Koenig's stores.

Parts for other John Deere models

John Deere 670G John Deere 8270R John Deere 8295R John Deere 6110M John Deere T670 John Deere 6120M John Deere 8200 John Deere S770 John Deere S690 John Deere S670 John Deere 6155M John Deere 8300