Komatsu WA320-8 Wheel Loader
Komatsu WA320-8 wheel loader specs: 165 hp class power, about 34,000-35,000 lb operating weight range, 3.0-4.2 yd3 bucket planning range, and mid-size loader cost notes.
Quick answer
Komatsu WA320-8 Wheel Loader Specs at a Glance
The Komatsu WA320-8 Wheel Loader is a 34,500 lb wheel loader rated at 165 net horsepower with a listed bucket capacity of 3.25 cu yd. Use this page to check the core model specs, then confirm the exact serial range, blade or bucket, undercarriage, counterweight, hydraulic options, and emissions package before using the numbers for purchase, transport, or bid decisions.
Spec basis: WA320-8 public product/specification reference. Confirm exact market, serial range, boom, arm, bucket, tire or track package, counterweight, emissions package, and attachments before using values for hauling, bidding, purchase, rental, or service planning.
Research Path
Next Steps for WA320-8
Key OEM Spec Summary
Fuel burn and hourly operating cost are Heavy Equipment Hub editorial planning estimates. They are not OEM guaranteed values.
Complete OEM Technical Data Sheet
Verified OEM engine parameters, hydraulic pressure circuits, digging forces, and transport dimensions.
| Reference Name | Komatsu WA320-8 wheel loader product specifications |
| Primary OEM Reference | https://www.komatsu.com/en-us/products/wheel-loaders/mid-size-wheel-loaders/wa320-8/ |
| Last Reviewed | September 2026 |
| Spec Configuration | WA320-8 public product/specification reference. Confirm exact market, serial range, boom, arm, bucket, tire or track package, counterweight, emissions package, and attachments before using values for hauling, bidding, purchase, rental, or service planning. |
| Cost and Fuel Note | Fuel burn and hourly operating cost are Heavy Equipment Hub editorial planning estimates. They are not OEM guaranteed values. |
| Editorial Guardrail | Komatsu data is published as a source-checked model page with configuration notes. Deeper cluster guides should be added one search intent at a time. |
| Power Class | 165 hp class |
| Operating Weight Class | About 34,000-35,000 lb depending on bucket, tires, counterweight, and options |
| Bucket Capacity Planning Range | About 3.0-4.2 yd3 class depending on bucket family and material density |
| Fuel Tank Planning Value | About 64.7 gal class |
| Best Fit | Fleets needing a loader larger than compact utility machines but easier to own than quarry-class loaders. |
| Verify Before Transport | Bucket, tire size, coupler, counterweight, ride control, fenders, roading lights, and scale package. |
| Common Long-Tail Searches Answered | Komatsu WA320-8 weight, WA320-8 horsepower, WA320-8 bucket capacity, Komatsu WA320 fuel consumption, mid size wheel loader specs. |
Machine Architecture & Operational Overview
The Komatsu WA320-8 is a mid-size wheel loader for aggregate yards, snow support, road maintenance, site material handling, pipe yard work, and smaller truck loading tasks. The important fleet question is not only horsepower: bucket size, tire package, counterweight, material density, roading time, idle time, and loader cycle pattern can all move real cost per hour.
Primary Jobsite Applications: Aggregate rehandling, truck loading, road maintenance, pipe yards, snow support, site cleanup, stockpiling, and municipal material handling
Buyer and Fleet Checklist
Before You Use These Specs
Transport Planning
Confirm weight, width, height, bucket or blade removal, counterweight, shoe width, tire package, permits, and trailer capacity against the actual machine configuration.
Attachment Matching
Check hydraulic flow, relief pressure, coupler style, case drain, return filtration, tool control, lifting limits, and dealer-approved attachment charts.
Cost Per Hour
Build the hourly rate from fuel, DEF, preventive maintenance, wear parts, tires or undercarriage, repairs, depreciation, finance cost, insurance, and utilization.
Spec Accuracy
Use the source link and configuration note as the starting point, then verify serial range and local-market literature before purchase, repair, hauling, or bid work.
Common Long-Tail Searches This Page Answers
What is the operating weight?
34,500 lb, depending on configuration.
How much horsepower does it have?
165 net hp for the listed engine configuration.
What blade capacity is listed?
3.25 cu yd for the listed blade configuration.
What should be verified before use?
Serial prefix, attachment package, counterweight, track shoe width, emissions tier, and local dealer documentation.
Komatsu WA320-8 Wheel Loader FAQ
What is the operating weight of the Komatsu WA320-8 Wheel Loader?
The listed operating weight is 34,500 lb for the referenced configuration. Buckets, blades, couplers, thumbs, guards, counterweights, tires, track shoes, fuel level, and regional packages can change the final transport weight.
How much horsepower does the Komatsu WA320-8 Wheel Loader have?
The listed net horsepower is 165 hp. Confirm the exact engine rating standard, emissions package, and model year before using the value for bidding, rental comparison, or attachment sizing.
Is the fuel burn shown here an OEM guaranteed number?
No. The fuel burn and hourly cost values are Heavy Equipment Hub planning estimates. Real fuel use changes with load factor, idle time, operator habits, hydraulic demand, underfoot conditions, maintenance condition, and job cycle.
What should I verify before buying, renting, or transporting this machine?
Verify serial range, configuration, attachment package, fluid specifications, transport dimensions, tire or track setup, counterweight, emissions equipment, service history, and the latest OEM or dealer documentation.
Recommended OEM Filters & Fluid Maintenance Kits
Komatsu 500-Hour Scheduled Maintenance Filter Kit
Official heavy duty hydraulic return filters, engine oil filters, fuel water separators, and SOS fluid sampling bottles.
Komatsu WA320-8 Wheel Loader Knowledge Base & Topic Cluster
Deep-dive technical guides attached to this master machine pillar.
Komatsu WA320-8 500-Hour Maintenance Checklist: Loader Linkage, Tires, Brakes and Cooling
A Komatsu WA320-8 500-hour maintenance checklist for loader linkage, tires, brakes, cooling airflow, hydraulics, bucket wear, filters and service records.
Komatsu WA320-8 Operating Cost Per Hour: Fuel Burn, Tires, Bucket Wear and Loader Cycles
Estimate Komatsu WA320-8 cost per hour with fuel burn, tires, bucket edge wear, brakes, loader linkage, idle time, yard cycles, maintenance and ownership.
Komatsu WA320-8 vs Cat 950 GC vs Volvo L90H: Mid-Size Wheel Loader Comparison
Compare Komatsu WA320-8, Cat 950 GC and Volvo L90H wheel loaders by bucket range, operating weight, fuel burn, tire cost, truck loading, yard work and ownership fit.
Komatsu WA320-8 Hydraulic and Steering Troubleshooting: Slow Lift, Brake Heat, Articulation Play and Loader Drift
Troubleshoot Komatsu WA320-8 slow lift, weak curl, hydraulic heat, steering wander, articulation play, brake heat, tire pull and loader drift.
Komatsu WA320-8 Winter and Snow Prep: Tires, Chains, DEF, Cooling and Salt Exposure
Prepare a Komatsu WA320-8 wheel loader for winter snow work with tire checks, chains, DEF handling, coolant, batteries, cutting edges, salt cleanup and records.
Fleet Management Specs
Spec Verification
Core machine values are checked against the Komatsu WA320-8 wheel loader product specifications. Configuration-sensitive values should still be verified against the exact serial range and dealer spec sheet.
Primary OEM reference