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6.303 O-rings in Block

From Engine Serial Number 158,976
Bore: 3.86 in (98mm)

Pin Diameter: 1.1878 in (30mm)

Block marked: R53260, R55035, R55351, R72970, R79280, T32346
Connecting rod marked: T20007, R81410
Piston marked: T23481

Agricultural: 3420
Construction Model: 540, 544

Displaying products 1 - 81 of 81 results
John Deere 6.303 Engine Inframe Overhaul Rebuild Kit, Late
Our Price: From $1,212.47 to $1,300.42
John Deere 6.303 Engine Inframe Overhaul Rebuild Kit, Late
From Engine Serial Number 158,976
free shipping
John Deere 6.303 Engine Inframe Overhaul Rebuild Kit, Late, Absolute
Our Price: From $964.58 to $1,086.03
John Deere 6.303 Engine Inframe Overhaul Rebuild Kit, Late, Absolute
From Engine Serial Number 158,976
free shipping
John Deere 6-303 Overhaul Kit, FP Diesel
John Deere 6-303 Overhaul Kit, FP Diesel, Late
MSRP: $1,724.14
Our Price: $1,499.25
You Save: $224.89 (13 %)
John Deere 6-303 Overhaul Kit, FP Diesel, Late
From Engine Serial Number 158,976
free shipping
John Deere Cylinder Kit, AR71591
MSRP: $158.59
Our Price: $139.12
You Save: $19.47 (12 %)
John Deere Cylinder Kit, AR71591
Piston, T23481
John Deere Cylinder Sleeve, T32340
MSRP: $58.33
Our Price: $56.90
You Save: $1.43 (2 %)
John Deere Cylinder Sleeve, T32340
replaces: T32340
John Deere Liner Sealing Ring Kit, AR71617
Our Price: $7.47
John Deere Liner Sealing Ring Kit, AR71617
replaces: AR71617
John Deere Piston, T23481
Our Price: $59.19
John Deere Piston, T23481
replaces: T23481
John Deere Piston Ring Set, 1 cylinder set, AR70633
Our Price: $20.21
John Deere Piston Ring Set, 1 cylinder set, AR70633
replaces: AR70633
John Deere Piston Pin, T23482
MSRP: $10.87
Our Price: $10.50
You Save: $0.37 (3 %)
John Deere Piston Pin, T23482
Pin Diameter: 1.1878 in
John Deere Piston Pin Retainer, R51112
MSRP: $1.69
Our Price: $1.52
You Save: $0.17 (10 %)
John Deere Piston Pin Retainer, R51112
replaces: R51112
John Deere Main Bearing, Standard, RE27352
MSRP: $14.56
Our Price: $13.36
You Save: $1.20 (8 %)
John Deere Main Bearing, Standard, RE27352
Standard
John Deere Main Bearing, .010, RE27353
MSRP: $14.63
Our Price: $12.94
You Save: $1.69 (12 %)
John Deere Main Bearing, .010, RE27353
.010 (.25mm)
John Deere Thrust Main Bearing, .010, AT21132
MSRP: $34.12
Our Price: $29.93
You Save: $4.19 (12 %)
John Deere Thrust Main Bearing, .010, AT21132
.010 (.25mm)
John Deere Main Bearing, .020, RE27360
MSRP: $13.85
Our Price: $12.82
You Save: $1.03 (7 %)
John Deere Main Bearing, .020, RE27360
.020 (.50mm)
John Deere Thrust Main Bearing, .020, AT21134
Our Price: $29.90
John Deere Thrust Main Bearing, .020, AT21134
.020 (.50mm)
John Deere Main Bearing, .030, RE27368
MSRP: $14.10
Our Price: $12.82
You Save: $1.28 (9 %)
John Deere Main Bearing, .030, RE27368
.030 (.75mm)
John Deere Thrust Main Bearing, .030, AT21136
Our Price: $29.90
John Deere Thrust Main Bearing, .030, AT21136
.030 (.75mm)
John Deere Rod Bearing, .010, RE27349
Our Price: $8.52
John Deere Rod Bearing, .010, RE27349
.010 (.25mm)
John Deere Rod Bearing, .020, RE27358
MSRP: $10.88
Our Price: $9.54
You Save: $1.34 (12 %)
John Deere Rod Bearing, .020, RE27358
.020 (.50mm)
John Deere Rod Bearing, .030, RE27364
MSRP: $11.23
Our Price: $9.94
You Save: $1.29 (11 %)
John Deere Rod Bearing, .030, RE27364
.030 (.75mm)
John Deere Head Gasket, R98462
Our Price: $71.96
John Deere Head Gasket, R98462
replaces: R98462
John Deere Head Gasket Set, RE38571
Our Price: $150.42
John Deere Head Gasket Set, RE38571
replaces: RE38571
John Deere Oil Pan Gasket, R97344
Our Price: $20.27
John Deere Oil Pan Gasket, R97344
replaces: R97344
John Deere Full Gasket Set, without crank seals, RE38568
Our Price: $205.73
John Deere Full Gasket Set, without crank seals, RE38568
replaces: RE38568
John Deere Front Crank Seal, AR67942
MSRP: $8.88
Our Price: $8.22
You Save: $0.66 (7 %)
John Deere Front Crank Seal, AR67942
Do not use with Flywheel Housing marked T20300, T22991
John Deere Rear Crank Seal, RE44574
MSRP: $29.92
Our Price: $27.20
You Save: $2.72 (9 %)
John Deere Rear Crank Seal, RE44574
Do not use with flywheel housings marked T20300, T22991
John Deere Valve Cover Gasket, R75728
Our Price: $20.85
John Deere Valve Cover Gasket, R75728
replaces: R75728
John Deere Valve Cover Gasket, T20467
MSRP: $13.22
Our Price: $12.13
You Save: $1.09 (8 %)
John Deere Valve Cover Gasket, T20467
replaces: T20467
John Deere Exhaust Manifold Gasket, R83021
MSRP: $5.06
Our Price: $4.40
You Save: $0.66 (13 %)
John Deere Exhaust Manifold Gasket, R83021
John Deere Fuel Pump Gasket, R27285
MSRP: $1.54
Our Price: $1.37
You Save: $0.17 (11 %)
John Deere Fuel Pump Gasket, R27285
replaces: R27285
John Deere Oil Pump Outlet Sealing Ring, R74354
MSRP: $0.84
Our Price: $0.77
You Save: $0.07 (8 %)
John Deere Oil Pump Outlet Sealing Ring, R74354
replaces: R74354
John Deere Oil Supply Tube O-Ring, R75892
MSRP: $1.65
Our Price: $1.46
You Save: $0.19 (12 %)
John Deere Oil Supply Tube O-Ring, R75892
Sold per seal
John Deere Teflon Seal, AR101238
MSRP: $9.75
Our Price: $8.87
You Save: $0.88 (9 %)
John Deere Teflon Seal, AR101238
Sold per seal
John Deere Thermostat Gasket, T24932
MSRP: $1.88
Our Price: $1.70
You Save: $0.18 (10 %)
John Deere Thermostat Gasket, T24932
replaces: T24932
John Deere 152, 164, 179, 202, 219 New Connecting Rod, AT18005, RE19733
Our Price: $81.83
John Deere 152, 164, 179, 202, 219 New Connecting Rod, AT18005, RE19733
Small Pin 1.187 (30mm pin diameter)
John Deere Connecting Rod Bolt, R74194
MSRP: $10.11
Our Price: $9.11
You Save: $1.00 (10 %)
John Deere Connecting Rod Bolt, R74194
Use with connecting rods marked T20007
John Deere Piston Pin Bushing, T23471
MSRP: $11.39
Our Price: $10.45
You Save: $0.94 (8 %)
John Deere Piston Pin Bushing, T23471
Pin Diameter: 1.1878 in
John Deere Camshaft Kit, RE53884
Our Price: $368.73
John Deere Camshaft Kit, RE53884
Camshaft is for threaded type tach drive shaft
John Deere Camshaft, R82821
Our Price: $317.07
John Deere Camshaft, R82821
Threaded Type rear hole for tach drive
John Deere Valve Lifter, T20073
Our Price: $9.71
John Deere Valve Lifter, T20073
replaces: T20073
John Deere Camshaft Gear, T20070
Our Price: $96.18
John Deere Camshaft Gear, T20070
replaces: T20070
John Deere Idler Bushing, T20034
MSRP: $7.80
Our Price: $6.90
You Save: $0.90 (12 %)
John Deere Idler Bushing, T20034
Upper
John Deere Idler Bushing, T26321
Our Price: $7.20
John Deere Idler Bushing, T26321
Lower
John Deere Idler Gear, AT18009
Our Price: $94.04
John Deere Idler Gear, AT18009
Upper
John Deere Idler Gear, AT24252
Our Price: $88.71
John Deere Idler Gear, AT24252
Lower
John Deere Crankshaft, AT22562
MSRP: $2,137.94
Our Price: $2,092.50
You Save: $45.44 (2 %)
John Deere Crankshaft, AT22562
Casting Numbers: A102, A102R, AT22562, F1910R, F2729R, F2792R, F3315R, F3560R, F3561R, R108658, R108679, R26550, R26550R, R40730, RE45541, T23264T, T23299T, T23480T, T23517T, T23266T
free shipping
John Deere Crankshaft Gear, T20094
Our Price: $63.05
John Deere Crankshaft Gear, T20094
Helical gear
John Deere Exhaust Valve, R79624
MSRP: $11.78
Our Price: $10.71
You Save: $1.07 (9 %)
John Deere Exhaust Valve, R79624
Standard stem, 45 degree
John Deere Exhaust Valve, R79625
Our Price: $9.63
John Deere Exhaust Valve, R79625
.003 oversize stem, 45 degree
John Deere Exhaust Valve, R79626
MSRP: $9.99
Our Price: $9.25
You Save: $0.74 (7 %)
John Deere Exhaust Valve, R79626
.015 oversize stem, 45 degree
John Deere Intake Valve, R79623
MSRP: $11.09
Our Price: $9.73
You Save: $1.36 (12 %)
John Deere Intake Valve, R79623
Standard stem, 45 degree
John Deere Intake Valve, R79628
Our Price: $8.24
John Deere Intake Valve, R79628
.003 oversize stem, 45 degree
John Deere Intake Valve, R79629
Our Price: $8.24
John Deere Intake Valve, R79629
.015 oversize stem, 45 degree
John Deere Valve Spring, R26125
John Deere Valve Spring, R26125
MSRP: $3.55
Our Price: $3.22
You Save: $0.33 (9 %)
John Deere Valve Spring, R26125
Length: 2.173, OD: 1.375
John Deere Valve Keeper, T20077
MSRP: $1.45
Our Price: $1.26
You Save: $0.19 (13 %)
John Deere Valve Keeper, T20077
replaces: T20077
John Deere Valve Seat, R51734
MSRP: $14.66
Our Price: $13.21
You Save: $1.45 (10 %)
John Deere Valve Seat, R51734
Exhaust
John Deere Valve Seat, R73064
Our Price: $10.11
John Deere Valve Seat, R73064
Intake, 30 degree
John Deere Valve Rotator, RE11410
Our Price: $9.53
John Deere Valve Rotator, RE11410
Sold per rotator
John Deere Valve Seal, R87627
John Deere Valve Seal, R87627
MSRP: $0.62
Our Price: $0.56
You Save: $0.06 (10 %)
John Deere Valve Seal, R87627
Sold per seal
John Deere Valve Stem Cap, T20129
John Deere Valve Stem Cap, T20129
MSRP: $7.31
Our Price: $6.35
You Save: $0.96 (13 %)
John Deere Valve Stem Cap, T20129
Sold per cap
John Deere Oil Cooler, RE31929
Our Price: $172.62
John Deere Oil Cooler, RE31929
donut type, 90 degree connections
John Deere Oil Pump, RE55343
Our Price: $165.03
John Deere Oil Pump, RE55343
4 bolt back plate, double bend tube required, 1.625" gears
John Deere Oil Cooler Tube Sealing Ring, R61871
MSRP: $1.66
Our Price: $1.48
You Save: $0.18 (11 %)
John Deere Oil Cooler Tube Sealing Ring, R61871
Use with pump RE55343
John Deere Oil Pump Cover, R53382
MSRP: $16.16
Our Price: $14.18
You Save: $1.98 (12 %)
John Deere Oil Pump Cover, R53382
John Deere Oil Pump Intake Pickup Tube, R113752
John Deere Oil Pump Intake Pickup Tube, R113752
MSRP: $28.46
Our Price: $13.88
You Save: $14.58 (51 %)
John Deere Oil Pump Intake Pickup Tube, R113752
Use with pump RE55343
John Deere Water Pump Repair Kit, MX132
MSRP: $67.30
Our Price: $66.98
You Save: $0.32 (0 %)
John Deere Water Pump Repair Kit, MX132
with impeller
John Deere Water Pump Repair Kit, RE19510
Our Price: $54.54
John Deere Water Pump Repair Kit, RE19510
without impeller
John Deere Thermostat, AR77411
Our Price: $104.36
John Deere Thermostat, AR77411
195 degrees
John Deere Fuel Injector, AR89564
MSRP: $57.71
Our Price: $31.95
You Save: $25.76 (45 %)
John Deere Fuel Injector, AR89564
pencil
John Deere Fuel Injector Packing, R48000
MSRP: $1.09
Our Price: $1.00
You Save: $0.09 (8 %)
John Deere Fuel Injector Packing, R48000
replaces: R48000
John Deere Fuel Injector Packing, R79605
MSRP: $5.70
Our Price: $2.79
You Save: $2.91 (51 %)
John Deere Fuel Injector Packing, R79605
minimum order qty 20
John Deere Fuel System Grommet Kit, MX506
MSRP: $12.32
Our Price: $11.00
You Save: $1.32 (11 %)
John Deere Fuel System Grommet Kit, MX506
6 cylinder
John Deere Fuel Lift Transfer Pump, RE42211
Our Price: From $39.38 to $41.00
John Deere Fuel Lift Transfer Pump, RE42211
John Deere Fuel Line Connector Kit, AR85618
MSRP: $12.24
Our Price: $10.73
You Save: $1.51 (12 %)
John Deere Fuel Line Connector Kit, AR85618
replaces: AR85618
John Deere Fuel Line Connector Kit, AT27622
MSRP: $9.43
Our Price: $8.73
You Save: $0.70 (7 %)
John Deere Fuel Line Connector Kit, AT27622
replaces: AT27622
John Deere Fuel Line Connector Nut, R51937
MSRP: $3.10
Our Price: $2.82
You Save: $0.28 (9 %)
John Deere Fuel Line Connector Nut, R51937
replaces: R51937
John Deere Flywheel Ring Gear, R114282
Our Price: $32.85
John Deere Flywheel Ring Gear, R114282
142 Teeth