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Parts for John Deere 4-239A and 4-239T Engines


Diesel Parts Direct carries a great selection of aftermarket parts for John Deere 4-239A/4-239T engines, including fuel transfer pumps, oil pumps, water pumps, overhaul kits and gasket sets.

Most parts are serial number specific. Click here for more information on your ESN.

If you do not see the parts you are looking for, please use our quote request form or call us at 888.687.0539: our knowledgeable inside sales staff will gladly assist you.

Engine Model Details



Valve Stem
.312"
Piston Pin
1.625"

FRONT CRANKSHAFT SEAL

$15.18

OIL PUMP (2.000" GEARS)

$247.85

EXHAUST VALVE (1.574" HEAD DIAMETER, 5.155" LENGTH, 45°)

$17.10

EXHAUST VALVE (.003" OVERSIZE STEM DIAMETER, 45deg)

$12.85

EXHAUST VALVE (.015" OVERSIZE STEM DIAMETER, 45°)

$14.34

EXHAUST VALVE (.030" OVERSIZE STEM DIAMETER, 45deg)

$30.03

CAMSHAFT

$224.73

INTAKE VALVE (1.815" HEAD DIAMETER, 5.168" LENGTH, 30deg)

$23.43

INTAKE VALVE (.030" OVERSIZE STEM DIAMETER, 30°)

$43.10

INTAKE VALVE (.003" OVERSIZE STEM DIAMETER, 30deg)

$20.80

INTAKE VALVE (.015" OVERSIZE STEM DIAMETER, 30°)

$21.32

PISTON KIT (LOW RING, 1.625" PIN DIAMETER)

$125.94

PISTON KIT (HIGH RING, 1.625" PIN DIAMETER)

$111.55

WATER PUMP REPAIR KIT (WITHOUT IMPELLER)

$365.39

CYLINDER KIT (LOW RING, 1.625" PISTON PIN DIAMETER)

$200.03

CONNECTING ROD BEARING (STANDARD)

$10.19

CONNECTING ROD BEARING (.010")

$9.97

CONNECTING ROD BEARING (.020")

$21.21

CONNECTING ROD BEARING (.030")

$21.21

OIL COOLER (6 PLATE, 90° ELBOWS, DOUGHNUT TYPE)

$224.72

CYLINDER KIT (HIGH RING, 1.625" PISTON PIN DIAMETER)

$152.94

FUEL INJECTOR (PENCIL TYPE)

MARKED 20291, 20504, 22205, 22264, 22265, 26993, 27336, 27337, 38087

$59.10

FUEL TRANSFER PUMP (WITH 90deg HOSE BARBS)

$82.57

CYLINDER HEAD GASKET SET

$117.24

FUEL TRANSFER PUMP (THREADED PORTS, WITH MOUNTING GASKET)

$60.15

REAR CRANKSHAFT SEAL WITH SLEEVE (TEFLON)

$40.09

CYLINDER SLEEVE (WITH SEALING RINGS, 7.720" LENGTH)

$140.89

OVERHAUL GASKET SET (WITHOUT CRANKSHAFT SEALS)

$129.10

OIL PUMP (1.625" GEARS, 3 BOLT BACK PLATE)

Surplus Item - Special Pricing

$127.75

WATER PUMP (CASTING R70437, R78286, R100812)

$242.18

OIL COOLER (6 PLATE, STRAIGHT NIPPLES, DOUGHNUT TYPE)

$169.40

WATER PUMP REPAIR KIT

$65.04

WATER PUMP REPAIR KIT

$64.98

WATER PUMP REPAIR KIT

$75.74

PISTON RING SET (1-1/8 K, 1-3/32, 1-3.5MM, 4.1929" BORE, 1 CYLINDER SET)

$45.75

WATER PUMP REPAIR KIT

FOR WATER PUMP CASTINGS R55971, R56813, R70612, R78287, R90783, R90784, R97564, R99665, R104648, R120869

$99.95

CAMSHAFT AND LIFTER KIT

$254.15

IN-FRAME OVERHAUL KIT - 4-239A / 4-239T (HIGH RING)

Complete Overhaul Kit Also Available

$878.98

MAJOR ENGINE OVERHAUL KIT - 4-239A / 4-239T (HIGH RING)

In-Frame Kit Also Available

$947.21

IN-FRAME OVERHAUL KIT - 4-239A / 4-239T (LOW RING)

Complete Overhaul Kit Also Available

$1,035.52

MAJOR ENGINE OVERHAUL KIT - 4-239A / 4-239T (LOW RING)

In-Frame Kit Also Available

$1,328.53