JD - Engine Kits and Parts: 6 Cylinder
Engine Kits and Parts: 6 Cylinder DIESEL
NOTE: Parts shown are BARE-Co parts - original part numbers are shown for reference only.
6 Cylinder Models (European & US engines)


Wrist Pin Bushes are included in JD Engine Kits
THREE KIT LEVELS
"EK" - fits in-frame repair (EXCLUDES main bearings) Includes - Pistons/Liners, Bearings etc.
"EKM" - includes all typical items shown in the illustration above - less crankshaft
"EKMC" - as above but including a new crankshaft
EKMC kits can be held in stock as all components are standard size for instant engine ASSEMBLY
NOT INCLUDED IN KIT:
(order separately)

IMPORTANT: Con Rod bolts MUST be replaced
after release of tension.
Select correct Spec bolt from CONROD Page
6 Cylinder DIESEL Models

ENGINE
TYPE

APPLICATION
ENGINE
OVERHAUL
KIT
LINER
INLCUDING
SEALS
PIST / LINER
KIT (1 cyl)
Includes 'O' Rings
RING SET
(1 cyl set) fit 3 ring pistons only
WRIST PIN
BUSH
EUROPEAN ENGINES
6 - 303D
6 CYL
3.858" Bore
Imported 3120 Up to tractor serial no. 074999 + Industrial Applications
'O' Ring grooved liner
EK65
EKM65
B544
=AR51902
B5489
B5496
=AR70633
B5499
=T23471
(1 3/16" I.D.)
Imported 3120 From tractor serial no 075000 + Industrial Applications
Plain liner
EK66
EKM66
B545
=T32340
B5490
=A471591
6 - 329D
6 CYL
4.016" Bore
4030 Up to engine no. 277549
(1 3/16" piston pin)
N/A
=T32343
B5492
=AR71593
B5497
=AR55759
4030 From engine no. 277550
(1 3/8" piston pin)
2840
EK67
EKM67
B5493
=AR78041
B5500
=R55647
(1 3/8" I.D.)
6 - 359D
6 CYL
4.193 Bore
2940 - 2950 -2955
EK68
EKM68
B548
=R90059
R80724
B5494
=RE24458
B5498
=RE15674
6 - 359T
6 CYL
TURBO
Imported 3650
+ Industrial Applications
EK69
EKM69
B5495
=RE22678
B5501
=R57451
(1.61" I.D.)

U.S. ENGINES

6 - 404D
6 CYL
4 1/4" BORE

Uprates Early
4 1/8" Bore
to
4 1/4" Bore
4010 Use with all blocks EXCEPT R40930
Updates early 4 1/8" bore to 4 1/4"
EK73
EKM73
B549
=R32050
B5502
=RE23173
Late Type Keystone Ring
(Fit FULL Sets)
B5505
=AR55630
Late Type Keystone 3 Ring
4 1/4" Bore
B5506
=R30939
4020 Up to engine no. 200999 use with blocks marked R33180 - R34340 - R40890 - R40900 only
4010 With block no. R40930 ONLY
Updates early 4 1/8" to 4 1/4"
EK74
EKM74
B550
=R40615
B5503
=RE23170
4 1/4" Bore
4020 Up to engine no. 200999
with block marked R40930 only
4020 From engine no. 201000
EK75
EKM75
B5504
=RE23165
4040, 4230
(With 6 - 404D engine)
EK76
EKM76
B5507
=RE23160
B5512
=AR65502
6 - 404T
TURBO
7020 From engine no. 335846
4430, 4630
EK77
EKM77
B5508
=AR63272
B5513
=AR51741
B5516
=R42173
6 - 466D
6 CYL
4.567" Bore
4050, 4240
(With 6 - 466D engine)
EK78
EKM78
B551
=R87858
B5509
=AR83610
B5514
=AR87753
6 - 466T
TURBO
6 - 466A
AFTERCOOLED
Early Models with Con Rods marked R57303 or R67320
Bush 1 5/8" Long at Oil Hole
4440, 4640, 4840, 8430, 8440
EK80
EKM80
B5511
=AR72079
B5515
=AR73627
B5518
=R60724
1 5/8" Long at Oil Hole
Late Models with Con Rods marked R71074
Bush 1 7/8" Long at Oil Hole
4440, 4640, 4840, 8430, 8440
+ ALL 4250, 4450, 4650, 4850, 8450
EK79
EKM79
B5510
=AR100646
B5517
=R74008
1 7/8" Long at Oil Hole

Pistons for JD European engines are latest High Ring type. Pistons after early 3.858" bore feature:

Ni - resist reinforced ring groove


Molybdenum Keystone Compression Ring


Accumulator Groove



Spring type Chrome Oil Ring


466T - 466A Liners are Induction Hardened.