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Komatsu WA380-3 and WA420-3 specifications

Entries in this reference
Listing-entry count
2
Short answer

Komatsu WA380-3 and WA420-3: wheel loaders.

Selected configuration figures
ConfigurationDocumented field and quantity
WA380-3
Gross Power
187.8 hp
Operating Weight
35,902 lb
WA420-3
Net Power
217.3 hp
Operating Weight
40,168 lb
WA380-3 and WA420-3 specification matrix — Listing labels reported by the source
Publisher nameSource guideListing-entry countLabels named by the source
KomatsuWA380-3 and WA420-32WA380-3 and WA420-3
Bucket
SpecificationWA380-3WA420-3
Dump Clearance At Max Raise9.6 ft10.26 ft
Bucket Capacity - Heaped4.19 yd34.84 yd3
Bucket Capacity - Struck3.54 yd34.19 yd3
Bucket Width9.54 ft10.01 ft
Breakout Force33,300 lb40,800 lb
Dimensions and weight
SpecificationWA380-3WA420-3
Ground Clearance1.28 ft1.51 ft
Length With Bucket On Ground26.14 ft26.78 ft
Width Over Tires8.85 ft9.26 ft
Height To Top Of Cab10.88 ft11.09 ft
Wheelbase10.5 ft10.83 ft
Hinge Pin - Max Height13.23 ft13.95 ft
Reach At Max Lift And Dump3.84 ft3.65 ft
Engine
SpecificationWA380-3WA420-3
Engine ModelS6D108S6D108
Displacement436.4 cu in436.4 cu in
SpecificationWA380-3
Gross Power187.8 hp
SpecificationWA420-3
Number Of Cylinders6
Net Power217.3 hp
Power Measured @2,200 rpm
Operational
SpecificationWA380-3WA420-3
Operating Weight35,902 lb40,168 lb
Fuel Capacity75.9 gal84.6 gal
Static Tipping Weight27,514 lb29,575 lb
Turning Radius21.1 ft21.8 ft
Tire Size20.5-25-16PR23.5-25-16PR
Transmission and speeds
SpecificationWA380-3WA420-3
Number Of Forward Gears44
Number Of Reverse Gears44
Max Speed - Forward19.6 mph20.4 mph
Max Speed - Reverse20.2 mph21.1 mph
Variants — Source comparison annotation
Source guideDiffering-field count reported
WA380-3 and WA420-323
Ratios
FigureWA380-3WA420-3
Engine horsepower per 1,000 lb of weight5.25.4
Fuel tank per engine horsepower0.40 gal0.39 gal

WA380-3 and WA420-3: owner reports

Sources: 3 forum discussions about the Komatsu WA380 wheel loaders (WA380-6, WA380-8); heavyequipmentforums.com.
WA380-3 and WA420-3: forum references — Forum-title search
Forum indexEquipment class queriedNames in the searchMatching titles
Heavy Equipment Forumswheel loaderKomatsu and the WA380, WA420 line that the WA380-3, WA420-3 belongs to (no title names the exact model)18
Topics named by those titles
Title topicTitles
brakes and steering3
electrical and sensors2
Topic in the titleThreadsShare of matching threads
brakes and steering317%
electrical and sensors211%
Used market for the WA380-3 and WA420-3 — Dated first-page listing snapshot
Observation dateListing sourceEquipment searchListings
2026-09-24MachineryTraderKomatsu wheel loader11
ModelListedModel yearsLowest askingHighest askingMedian askingMedian hours
WA380-391997 to 2022$21,000$40,900$23,000None shown
WA420-321997 to 2000$5,196$9,950$7,573None shown
WA380-3 and WA420-3: recall reference — Dated CPSC search
Search dateDatabaseNames queriedSearch result
2026-09-24U.S. Consumer Product Safety CommissionKomatsu together with the wheel loader WA380-3, WA420-3No matching recall in this search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
Reference site
Forum threads
Forum threads
Used-market listings
Federal agency data

Komatsu WA380-3 and WA420-3: Configuration records

WA380-3
SpecificationSource figure
Bucket
Dump Clearance At Max Raise9.6 ft
Bucket Capacity - Heaped4.19 yd3
Bucket Capacity - Struck3.54 yd3
Dimensions and weight
Ground Clearance1.28 ft
Length With Bucket On Ground26.14 ft
Width Over Tires8.85 ft
Height To Top Of Cab10.88 ft
Wheelbase10.5 ft
Hinge Pin - Max Height13.23 ft
Reach At Max Lift And Dump3.84 ft
Engine
Engine ModelS6D108
Gross Power187.8 hp
Displacement436.4 cu in
Operational
Fuel Capacity75.9 gal
Static Tipping Weight27,514 lb
Turning Radius21.1 ft
Tire Size20.5-25-16PR
Transmission and speeds
Number Of Forward Gears4
Number Of Reverse Gears4
Max Speed - Forward19.6 mph
Max Speed - Reverse20.2 mph
Additional specifications
Bucket Width9.54 ft
Breakout Force33,300 lb
Operating Weight35,902 lb

Source

WA420-3
SpecificationSource figure
Bucket
Dump Clearance At Max Raise10.26 ft
Bucket Capacity - Heaped4.84 yd3
Bucket Capacity - Struck4.19 yd3
Dimensions and weight
Ground Clearance1.51 ft
Length With Bucket On Ground26.78 ft
Width Over Tires9.26 ft
Height To Top Of Cab11.09 ft
Wheelbase10.83 ft
Hinge Pin - Max Height13.95 ft
Reach At Max Lift And Dump3.65 ft
Engine
Engine ModelS6D108
Displacement436.4 cu in
Net Power217.3 hp
Power Measured @2,200 rpm
Operational
Fuel Capacity84.6 gal
Static Tipping Weight29,575 lb
Turning Radius21.8 ft
Tire Size23.5-25-16PR
Transmission and speeds
Number Of Forward Gears4
Number Of Reverse Gears4
Max Speed - Forward20.4 mph
Max Speed - Reverse21.1 mph
Additional specifications
Bucket Width10.01 ft
Breakout Force40,800 lb
Number Of Cylinders6
Operating Weight40,168 lb

Source

Compare Komatsu WA380-3, WA420-3
Bucket
SpecificationWA380-3WA420-3
Dump Clearance At Max Raise9.6 ft10.26 ft
Bucket Capacity - Heaped4.19 yd34.84 yd3
Bucket Capacity - Struck3.54 yd34.19 yd3
Bucket Width9.54 ft10.01 ft
Breakout Force33,300 lb40,800 lb
Dimensions and weight
SpecificationWA380-3WA420-3
Ground Clearance1.28 ft1.51 ft
Length With Bucket On Ground26.14 ft26.78 ft
Width Over Tires8.85 ft9.26 ft
Height To Top Of Cab10.88 ft11.09 ft
Wheelbase10.5 ft10.83 ft
Hinge Pin - Max Height13.23 ft13.95 ft
Reach At Max Lift And Dump3.84 ft3.65 ft
Engine
SpecificationWA380-3WA420-3
Engine ModelS6D108S6D108
Displacement436.4 cu in436.4 cu in
Operational
SpecificationWA380-3WA420-3
Operating Weight35,902 lb40,168 lb
Fuel Capacity75.9 gal84.6 gal
Static Tipping Weight27,514 lb29,575 lb
Turning Radius21.1 ft21.8 ft
Tire Size20.5-25-16PR23.5-25-16PR
Transmission and speeds
SpecificationWA380-3WA420-3
Number Of Forward Gears44
Number Of Reverse Gears44
Max Speed - Forward19.6 mph20.4 mph
Max Speed - Reverse20.2 mph21.1 mph

More in Komatsu: WA380-6 High Lift/2 related models specs, WA800-3E0/WA900-3E0, WA380-8: loader hydraulics/steering/modes.