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Komatsu WA270-7, WA320-7, and WA380-7 specifications

Entries in this reference
Listing-entry count
3
Short answer

Komatsu WA270-7, WA320-7, and WA380-7: wheel loaders.

Selected configuration figures
ConfigurationDocumented field and quantity
WA270-7
Gross Power
154.3 hp
Pump Flow Capacity
39.7 gpm
WA320-7
Gross Power
173 hp
Pump Flow Capacity
29.1 gpm
WA380-7
Net Power
142 hp
Pump Flow Capacity
36.2 gpm
WA270-7, WA320-7, and WA380-7 specification matrix — Listing labels reported by the source
Publisher nameSource guideListing-entry countLabels named by the source
KomatsuWA270-7, WA320-7, and WA380-73WA270-7, WA320-7, and WA380-7
Bucket
SpecificationWA270-7
Dump Clearance At Max Raise9.77 ft
Bucket Capacity - Heaped3.01 yd3
Bucket Capacity - Struck2.75 yd3
Bucket Width8.37 ft
Breakout Force29,450 lb
Dimensions and weight
SpecificationWA270-7
Ground Clearance1.53 ft
Length With Bucket On Ground23.97 ft
Width Over Tires8.22 ft
Height To Top Of Cab10.5 ft
Wheelbase9.52 ft
Hinge Pin - Max Height13.01 ft
Reach At Max Lift And Dump2.66 ft
Engine
SpecificationWA270-7WA320-7WA380-7
Engine ModelSAA6D107E-2SAA6D107E-2SAA6D107E-2
Net Power148.9 hp165 hp142 hp
Gross Power154.3 hp173 hp143 hp
Power Measured @2,000 rpm2,100 rpm2,100 rpm
AspirationTurbo-chargedTURBOCHARGEDTURBOCHARGED
SpecificationWA270-7WA380-7
Displacement408.3 cu in408.3 cu in
SpecificationWA270-7
Bore4.3 in
Stroke4.9 in
SpecificationWA320-7WA380-7
Number Of Cylinders66
Operational
SpecificationWA270-7WA320-7WA380-7
Fuel Capacity49.2 gal64.7 gal79.3 gal
Hydraulic System Fluid Capacity20.7 gal23.7 gal37.5 gal
Engine Oil Fluid Capacity6.1 gal6.1 gal6.1 gal
Cooling System Fluid Capacity7.4 gal6.1 gal14.4 gal
Front Axle/Diff Fluid Capacity4.9 gal7.1 gal10.6 gal
Rear Axle/Diff Fluid Capacity4.8 gal6.7 gal10.6 gal
SpecificationWA320-7WA380-7
Turning Radius17.8 ft20.9 ft
Tire Size20.5-2523.5-25
SpecificationWA380-7
Transmission Fluid Capacity14.3 gal
Transmission and speeds
SpecificationWA270-7WA320-7WA380-7
Transmission TypeHydrostaticHYDROSTATICFULL POWERSHIFT
Number Of Forward Gears444
Number Of Reverse Gears444
Max Speed - Forward23.6 mph23.6 mph40 mph
Max Speed - Reverse23.6 mph23.6 mph40 mph
Hydraulic System
SpecificationWA270-7WA320-7WA380-7
Relief Valve Setting3,000 psi2,700 psi3,555 psi
Pump Flow Capacity39.7 gpm29.1 gpm36.2 gpm
Raise Time5.7 sec5.7 sec5.9 sec
Dump Time2 sec1.6 sec1.8 sec
Lower Time3.2 sec3.3 sec3.3 sec
Pump TypeHydraulicGEAR TYPE PUMPPISTON PUMP
Variants — Source comparison annotation
Source guideDiffering-field count reported
WA270-7, WA320-7, and WA380-737
Ratios
FigureWA270-7WA320-7WA380-7
Pump flow per engine horsepower0.27 gpm0.18 gpm0.25 gpm
Fuel tank per engine horsepower0.33 gal0.39 gal0.56 gal

WA270-7, WA320-7, and WA380-7: owner reports

Related account: “Transmission slipping and overheating”; “Codes and a ride-control drop”: WA 400-5 to WA380-3 Active+.

WA270-7, WA320-7, and WA380-7: forum references — Forum-title search
Forum indexEquipment class queriedNames in the searchMatching titles
Heavy Equipment Forumswheel loaderKomatsu and the WA270 line that the WA270-7, WA320-7, WA380-7 belongs to (no title names the exact model). That is too few titles to say what owners mostly ask about, so the most recent are listed instead13
Used market for the WA270-7, WA320-7, and WA380-7 — Dated first-page listing snapshot
Observation dateListing sourceEquipment searchListings
2026-09-24MachineryTraderKomatsu wheel loader40
ModelListedModel yearsLowest askingHighest askingMedian askingMedian hours
WA270-7202013 to 2016$34,000$114,900$62,2255,210
WA320-7132014 to 2017$38,500$120,000$74,700None shown
WA380-772012 to 2015$49,950$95,000$59,25012,194
WA270-7, WA320-7, and WA380-7: recall reference — Dated CPSC search
Search dateDatabaseNames queriedSearch result
2026-09-24U.S. Consumer Product Safety CommissionKomatsu together with the wheel loader WA270-7, WA320-7, WA380-7No matching recall in this search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
Reference site
Reference site
Forum threads
Used-market listings
Federal agency data
Recorded observations — Forum-title snapshot
Observation fieldRecorded value
Title count13
Forum indexesHeavy Equipment Forums
Search wordingthe WA270-7, WA320-7, and WA380-7 wheel loader
Latest title quoted by the referenceThird Valve Install On Komatsu Wa320 7

Komatsu WA270-7, WA320-7, and WA380-7: Configuration records

WA270-7
SpecificationSource figure
Bucket
Dump Clearance At Max Raise9.77 ft
Bucket Capacity - Heaped3.01 yd3
Bucket Capacity - Struck2.75 yd3
Dimensions and weight
Ground Clearance1.53 ft
Height To Top Of Cab10.5 ft
Wheelbase9.52 ft
Length With Bucket On Ground23.97 ft
Width Over Tires8.22 ft
Hinge Pin - Max Height13.01 ft
Reach At Max Lift And Dump2.66 ft
Engine
Engine ModelSAA6D107E-2
Displacement408.3 cu in
AspirationTurbo-charged
Power Measured @2,000 rpm
Gross Power154.3 hp
Net Power148.9 hp
Operational
Fuel Capacity49.2 gal
Hydraulic System Fluid Capacity20.7 gal
Engine Oil Fluid Capacity6.1 gal
Cooling System Fluid Capacity7.4 gal
Front Axle/Diff Fluid Capacity4.9 gal
Rear Axle/Diff Fluid Capacity4.8 gal
Transmission and speeds
Number Of Forward Gears4
Number Of Reverse Gears4
Max Speed - Forward23.6 mph
Max Speed - Reverse23.6 mph
Hydraulic System
Relief Valve Setting3,000 psi
Raise Time5.7 sec
Dump Time2 sec
Lower Time3.2 sec
Pump Flow Capacity39.7 gpm
Pump TypeHydraulic
Additional specifications
Bore4.3 in
Stroke4.9 in
Transmission TypeHydrostatic
Bucket Width8.37 ft
Breakout Force29,450 lb

Source

WA320-7
SpecificationSource figure
Engine
Engine ModelSAA6D107E-2
AspirationTURBOCHARGED
Power Measured @2,100 rpm
Gross Power173 hp
Net Power165 hp
Operational
Fuel Capacity64.7 gal
Hydraulic System Fluid Capacity23.7 gal
Engine Oil Fluid Capacity6.1 gal
Cooling System Fluid Capacity6.1 gal
Front Axle/Diff Fluid Capacity7.1 gal
Rear Axle/Diff Fluid Capacity6.7 gal
Turning Radius17.8 ft
Tire Size20.5-25
Transmission and speeds
Number Of Forward Gears4
Number Of Reverse Gears4
Max Speed - Forward23.6 mph
Max Speed - Reverse23.6 mph
Hydraulic System
Relief Valve Setting2,700 psi
Raise Time5.7 sec
Dump Time1.6 sec
Lower Time3.3 sec
Pump Flow Capacity29.1 gpm
Pump TypeGEAR TYPE PUMP
Additional specifications
Number Of Cylinders6
Transmission TypeHYDROSTATIC

Source

WA380-7
SpecificationSource figure
Engine
Engine ModelSAA6D107E-2
Displacement408.3 cu in
AspirationTURBOCHARGED
Power Measured @2,100 rpm
Net Power142 hp
Operational
Fuel Capacity79.3 gal
Hydraulic System Fluid Capacity37.5 gal
Engine Oil Fluid Capacity6.1 gal
Cooling System Fluid Capacity14.4 gal
Transmission Fluid Capacity14.3 gal
Front Axle/Diff Fluid Capacity10.6 gal
Rear Axle/Diff Fluid Capacity10.6 gal
Turning Radius20.9 ft
Tire Size23.5-25
Transmission and speeds
Number Of Forward Gears4
Number Of Reverse Gears4
Max Speed - Forward40 mph
Max Speed - Reverse40 mph
Hydraulic System
Relief Valve Setting3,555 psi
Raise Time5.9 sec
Dump Time1.8 sec
Lower Time3.3 sec
Pump Flow Capacity36.2 gpm
Pump TypePISTON PUMP
Additional specifications
Number Of Cylinders6
Transmission TypeFULL POWERSHIFT

Source

Compare Komatsu WA270-7, WA320-7, WA380-7
Engine
SpecificationWA270-7WA320-7WA380-7
Engine ModelSAA6D107E-2SAA6D107E-2SAA6D107E-2
Net Power148.9 hp165 hp142 hp
Power Measured @2,000 rpm2,100 rpm2,100 rpm
AspirationTurbo-chargedTURBOCHARGEDTURBOCHARGED
Operational
SpecificationWA270-7WA320-7WA380-7
Fuel Capacity49.2 gal64.7 gal79.3 gal
Hydraulic System Fluid Capacity20.7 gal23.7 gal37.5 gal
Engine Oil Fluid Capacity6.1 gal6.1 gal6.1 gal
Cooling System Fluid Capacity7.4 gal6.1 gal14.4 gal
Front Axle/Diff Fluid Capacity4.9 gal7.1 gal10.6 gal
Rear Axle/Diff Fluid Capacity4.8 gal6.7 gal10.6 gal
Transmission and speeds
SpecificationWA270-7WA320-7WA380-7
Transmission TypeHydrostaticHYDROSTATICFULL POWERSHIFT
Number Of Forward Gears444
Number Of Reverse Gears444
Max Speed - Forward23.6 mph23.6 mph40 mph
Max Speed - Reverse23.6 mph23.6 mph40 mph
Hydraulic System
SpecificationWA270-7WA320-7WA380-7
Relief Valve Setting3,000 psi2,700 psi3,555 psi
Pump Flow Capacity39.7 gpm29.1 gpm36.2 gpm
Raise Time5.7 sec5.7 sec5.9 sec
Dump Time2 sec1.6 sec1.8 sec
Lower Time3.2 sec3.3 sec3.3 sec
Pump TypeHydraulicGEAR TYPE PUMPPISTON PUMP

More in Komatsu: WA320-3 CUSTOM, WA 400-5–WA380-3 Active+ specs, WA200-6–WA250-6.