Kubota D1803 Engine Parts
Alpine Equipment stocks OEM and aftermarket parts for the Kubota D1803 engine — filters, gaskets, seals, pumps, water pumps, injectors, and complete rebuild components. Same-day shop pickup in Utah County; nationwide shipping.
Need pricing on a complete D1803 engine or a full rebuild? Call our factory-certified Kubota team at (801) 701-7394.
- Cylinders3
- Displacement111.4 cu.in.
- Bore & Stroke3.43 x 4.031 in
- Rated Output37.4–56.3 HP
- Max Torque85.3–134.8 lb-ft
- AspirationNaturally aspirated / Turbocharged / Turbocharged + Turbo After Cooler
- Dry Weight333–469 lbs
Specs vary by engine variant/spec code. Confirm fitment by part number or call us.
Kubota D1803 Manuals & Parts Diagrams
Official Kubota parts lists and service-data reference for this model. Use them to find the exact part number or spec, then search or call to order. Or browse the full Kubota manual library.
Illustrated Parts Lists
Service Data
D1803 Engine Parts (878 parts)
1G841-16190
COLLAR
$7.42
1G842-23770
KIT METAL(04)
$417.34
1G840-74280
PULLEY, FAN DRIVE
$173.25
1G840-25016
COMP FLYWHEEL
$975.82
1G841-91010
BOLT, SEMS
$3.83
1G790-87210
LABEL PUMP
$0.89
1G842-23760
KIT METAL(02)
$417.34
1G840-23020
CRANKSHAFT, COMP
$3,203.45
1G830-16010
ASSY CAMSHAFT
$513.12
1G790-72704
COMP.FLANGE, WATER
$151.55
1G814-73340
PIPE
$10.00
1G791-24013
COMP.GEAR, IDLE
$322.59
1G790-21093
ASSY PISTON RING
$102.64
1G790-97010
V BELT
$23.24
1G790-57007
ASSY PLATE, CONTROL
$83.22
1G750-14507
ASSY COVER, CYL.HEAD
$232.50
1G742-65562
CORD
$13.04
1G750-03602
GASKET, CYL.HEAD
$101.75
1G750-03632
GASKET, CYL.HEAD
$101.75
1G742-05120
COVER, BREATHER
$9.21
1G702-51013
ASSY PUMP, INJECTION
$1,375.27
1G711-03040
COMP.CYLINDER HEAD
$1,397.25
1G622-37084
CONNECTOR
$68.46
1G610-73053
ASSY SEAL MECH
$38.17
1G607-83182
SHAFT, PUMP DRIVE
$322.65
1G466-21900
PISTON
$133.68
1G466-21777
KIT PISTON
$248.83
1G466-21787
KIT PISTON
$249.70
1G466-21110
PISTON
$132.44
1G386-92020
NUT
$2.06
1G386-93030
SCREW, RD HD
$1.37
1G386-93010
SCREW, RD HD
$2.06
1G386-93040
SCREW, RD HD
$1.37
1G386-91050
BOLT
$3.22
1G386-93020
SCREW, RD HD
$1.72
1G386-91040
BOLT
$2.06
1G386-92010
NUT
$7.58
1G386-64330
SPRING(BRUSH)
$3.22
1G386-64260
BOLT(THROUGH)
$12.88
1G386-64150
COLLAR
$9.50
1G386-64850
RECTIFIER, ASSY
$244.33
1G386-64800
COVER(BEARING)
$8.32
1G386-64710
PLATE(RETAINER)
$8.13
1G386-64810
WASHER
$5.86
1G386-64090
BRUSH
$10.24
1G386-64060
FRAME(END)
$71.95
1G377-64490
LAMP INDICATOR
$22.08
1G355-64770
BEARING, BALL
$29.19
More Kubota Engine Parts
Need pricing on a Kubota D1803 engine or a rebuild?
We sell, exchange, and rebuild Kubota engines — and stock the parts to keep yours running. Call or send a quote request.
Call or Text — Factory-Certified Kubota Elite Dealer
349 S 100 W, American Fork, UT 84003 · Mon–Fri 7:00 AM – 5:00 PM · Sat by Appt