Enter Part
# into the Search Box to the
left to get pricing and to
order.
1
OK6481
Engine Overhaul Kit
1
2
IK6481
Engine In-Frame Kit
1
3
TPLK481
Piston-Liner Kit
1
4
TT23481
Piston
6 Per Engine
5
Piston Ring
6
Piston Pin
7
Liner, Cyl &
O'ring Kit
8
O'ring Kit
9
Piston Pin Retainer
10
Main Bearing
10
Main Bearing
10
Main Bearing
10
Main Bearing
11
Thrust Bearing
11
Thrust Bearing
11
Thrust Bearing
11
Thrust Bearing
12
Con Rod Bearing
12
Con Rod Bearing
12
Con Rod Bearing
12
Con Rod Bearing
13
TAR67942
Front Seal
14
TRE44574
(1)
Rear Seal
15
TAT22562
Crankshaft
16
TT20094
Crankshaft Gear
17
TT20088
Ring Gear
(142T)
18
Sleeve, Front
19
Packing, Sleeve
20
O/H Gasket Set
21
Head Gasket Set
22
Head Gasket
23
Oil Pan Gasket
24
Rocker Cover Gasket
25
Bush, Con Rod
26
Bolt, Con Rod
27
Bushing, Bal. Shaft
28
Bal. Shaft R/H
29
Bal. Shaft L/H
30
Camshaft
31
Bal. Shaft Stop
32
Con Rod
33
Oil Pump
34
Oil Cooler
35
Rocker Arm
36
Rocker Shaft
37
Oil Pump Tube
38
Cyl Hd Cap Screw
39
Lower Gear
40
Lower Bushing
41
Upper Gear
42
Upper Bushing
43
Cam. Follower
44
Cam. Gear
45
Valve, Intake
45
Valve, Intake
45
Valve, Intake
46
Valve, Exhaust
46
Valve, Exhaust
46
Valve, Exhaust
47
Valve Insert
(Intake)
47
Valve Insert
(Exhaust)
48
Cap, Valve
49
Lock, Valve
50
Spring, Valve
51
Rotator, Valve
52
O'ring, Valve
53
Thermostat
180° F
54
Thermostat Cover
55
Fuel Transfer
Pump
56
Water PumpRepair
Kit (w/o Impeller)
56
Water PumpRepair
Kit (w/ Impeller)
57
Water Pump
(m)R73604
58
Injector, Pencil
59
Seal
59
Seal
(*)
Verify JD parts manual.
(1) Do not use with fly wheel housing (m) T20300, T22991.
(2) Use TR74194 with Con Rod (m) T20007: use TR80033 with Con Rod (m)
R81410.
(3) Threaded type.
6.303
John Deere Replacement Engine Parts
6 Cyl
O'rings on block
KEY
PART #
*
DESCRIPTION
REFERENCE INFO
Enter Part
# into the Search Box to the
left to get pricing and to
order.
1
OK6591
Engine Overhaul Kit
1
2
IK6591
Engine In-Frame Kit
1
3
TAR71591
Piston-Liner Kit
1
4
TT23481
Piston
6 Per Engine
5
Piston Ring
6
Piston Pin
7
Liner, Cyl &
O'ring Kit
8
O'ring Kit
9
Piston Pin Retainer
10
Main Bearing
10
Main Bearing
10
Main Bearing
10
Main Bearing
11
Thrust Bearing
11
Thrust Bearing
11
Thrust Bearing
11
Thrust Bearing
12
Con Rod Bearing
12
Con Rod Bearing
12
Con Rod Bearing
12
Con Rod Bearing
13
TAR67942
Front Seal
14
TRE44574
(1)
Rear Seal
15
TAT22562
Crankshaft
16
TT20094
Crankshaft Gear
17
TT20088
Ring Gear
(142T)
18
Sleeve, Front
19
Packing, Sleeve
20
O/H Gasket Set
21
Head Gasket Set
22
Head Gasket
23
Oil Pan Gasket
24
Rocker Cover Gasket
25
Bush, Con Rod
26
Bolt, Con Rod
27
Bushing, Bal. Shaft
28
Bal. Shaft R/H
29
Bal. Shaft L/H
30
Camshaft
31
Bal. Shaft Stop
32
Con Rod
33
Oil Pump
34
Oil Cooler
35
Rocker Arm
36
Rocker Shaft
37
Oil Pump Tube
38
Cyl Hd Cap Screw
39
Lower Gear
40
Lower Bushing
41
Upper Gear
42
Upper Bushing
43
Cam. Follower
44
Cam. Gear
45
Valve, Intake
45
Valve, Intake
45
Valve, Intake
46
Valve, Exhaust
46
Valve, Exhaust
46
Valve, Exhaust
47
Valve Insert
(Intake)
47
Valve Insert
(Exhaust)
48
Cap, Valve
49
Lock, Valve
50
Spring, Valve
51
Rotator, Valve
52
O'ring, Valve
53
Thermostat
180° F
54
Thermostat Cover
55
Fuel Transfer
Pump
56
Water PumpRepair
Kit (w/o Impeller)
56
Water PumpRepair
Kit (w/ Impeller)
57
Water Pump
(m)R73604
58
Injector, Pencil
59
Seal
59
Seal
(*) Verify JD parts manual.
(1) Do not use with fly wheel housing (m) T20300, T22991.
(2) Use TR74194 with Con Rod (m) T20007: use TR80033 with Con Rod (m)
R81410.
(3) Threaded type.