Komatsu's WA475-11 and WA485-11: The Next-Generation Large Wheel Loaders Replacing the Dash-8 Lineup

Komatsu's large wheel loader lineup just got its biggest overhaul in years. The WA475-11 and WA485-11 replace the WA470-8 and WA480-8, and this isn't a running-change refresh with a new paint scheme. Komatsu redesigned the engine, built an entirely new transmission architecture, and reworked the cab from the ground up. For aggregate producers, quarries, and site-development contractors who load trucks all day, the jump from Dash-8 to Dash-11 is worth understanding before your next loader purchase.

Meet the WA485-11

The WA485-11 is the larger of the pair, rated at 362 net horsepower at 1,600 rpm and running a bucket range of 4.9 to 5.8 cubic yards depending on configuration, with operating weight between 61,432 and 64,997 lbs. Against the WA480-8 it replaces, Komatsu's own North American spec sheet puts the gains at up to 12% lower fuel consumption, 21% more engine power, and 13% greater climbing speed. Payload capacity moves to a permanent 8,800 kg, climbing to 9,300 kg on the aggregate-handling variant.

That aggregate-handling (YL) configuration matters more than it sounds. It pairs a heavier counterweight, wide low-profile tires, a reinforced frame, and a 7.2 cubic yard bucket sized specifically for a three-pass match with on-highway trucks. If you're running a quarry loadout and counting cycles against a truck's bed capacity, that's not a marketing footnote, it's the number that decides how many loader passes a driver sits through before pulling onto the scale.

The WA475-11 Steps In Behind It

The WA475-11 takes over for the WA470-8 at 342 net horsepower, a 4.2 to 5.2 cubic yard bucket, and 56,482 to 57,077 lbs operating weight. It's the loader most contractors running a mixed fleet of aggregate, demolition debris, or general site material will actually spec, since it sits a full size class below the WA485-11 without giving up the Dash-11 platform's engineering. Komatsu's figures for this pairing show a smaller but still real jump: a 14% fuel efficiency gain over the Dash-10 generation it follows.

Both machines share the same new Komatsu DBA127 engine family, redesigned to eliminate exhaust gas recirculation (EGR) entirely. An EGR-less design means fewer moving parts in the emissions path, which in practice means less to go wrong and fewer regen-related downtime headaches over the loader's working life. It's U.S. EPA Tier 4 Final certified without the older generation's EGR hardware sitting in the way of routine maintenance.

Fuel system is direct injection with a 94.8-gallon tank and a 15.9-gallon DEF tank on the WA485-11, sized for a full shift of continuous loading without a mid-day fuel stop interrupting production. The engine is governed electronically across the full speed range, which is part of how Komatsu gets the low-end torque gains without sacrificing the fuel curve at higher RPM. None of that is flashy, but it's the kind of detail that decides whether a loader actually finishes a long summer shift on one tank or starts cutting into productive hours with refueling trips.

What KHMT Changes on the Loading Face

The real engineering story on both machines is the new Komatsu Hydraulic Mechanical Transmission, or KHMT. Instead of a conventional torque converter, KHMT combines a hydrostatic drive and a mechanical gear path into one continuously variable system, keeping the engine in its most efficient operating band across the whole speed range rather than forcing it to hunt between fixed gears. Komatsu also built in dynamic transmission braking, which eliminates the need for a separate brake-cooling system entirely.

For an operator, that shows up as smoother acceleration out of the bucket-fill and less driveline shock when transitioning from dig to carry to dump. For a fleet manager, it shows up as the fuel and climbing-speed numbers above. Komatsu paired KHMT with a new Angle Feedback Joystick Steering (AFJS) system, letting the operator steer by joystick with the machine translating tilt angle into a proportional steering response, which cuts wrist fatigue over a full shift without giving up a traditional steering wheel option.

Built for the Yard, Not Just the Spec Sheet

Visibility is up 21% over the previous generation thanks to a redesigned four-pillar cab with a lower glass line and the rear pillars eliminated entirely. Komatsu also made rear object detection standard equipment on both models: dual rear-side radars paired with a warning buzzer and indicator light, tuned to reduce false detections so the alert doesn't become background noise an operator starts to ignore.

Maintenance intervals stretched out considerably on both machines. Hydraulic oil and filter changes move from 2,000 to 6,000 hours, and the KDPF cleaning interval extends from 4,500 to 8,000 hours, with oil drain intervals pushed out up to 1,000 hours. Komatsu's stated maintenance-cost reduction against the WA480-8 is up to 21%, which on a loader running two or three shifts a day over several years is real money, not a rounding error on a spec sheet.

If You're Running an Aging WA470-8 or WA480-8 Today

A lot of fleets reading this already own the predecessor generation, and the honest question is whether it's worth trading in now or running the Dash-8 another few years first. The math usually comes down to hours and application. A WA480-8 past 8,000 hours and heading into a major hydraulic service is a reasonable point to compare the cost of that repair against a trade-in toward a WA485-11, especially once you factor in the newer machine's extended 6,000-hour oil change interval against the older platform's shorter schedule. A lower-hour Dash-8 still running well on a lighter-duty rotation doesn't need to be replaced just because a newer model exists.

Resale value also favors making the move sooner rather than later in a generation's lifecycle. Dash-8 wheel loaders will keep working for years in the used market, but as Dash-11 units accumulate hours in the field and dealers build out parts and service support around the new KHMT driveline, the Dash-8's resale curve will soften the way every outgoing generation's does. Trading while your current machine still has strong book value, rather than waiting until it's the oldest iron on a used lot, is usually the better financial position whether you finance the replacement or structure a sale-leaseback against the trade.

Who Actually Needs This Machine

• Aggregate and quarry operators loading on-highway trucks who want the three-pass YL configuration sized to their truck fleet

• Site-development and demolition contractors moving mixed material where bucket versatility matters more than maximum payload

• Material-handling operations running multiple shifts where extended service intervals translate directly into more uptime hours

• Fleets replacing aging WA470-8 or WA480-8 units where the fuel and maintenance-cost gains pay back faster the more hours the machine logs annually

A wheel loader in this weight class is squarely a buy-not-rent decision for any operation running it more than a few weeks a year. Rental rates on a 350-plus horsepower loader add up fast, and a rented machine never gets you the extended service intervals or the KHMT efficiency gains Komatsu built these two models around, since you're paying rental markup on top of someone else's depreciation schedule either way.

Financing a WA475-11 or WA485-11

Komatsu's own WA270-8 mid-size wheel loader sits well below this weight class, but the financing math follows the same logic at any size: a loader this specialized earns its keep through utilization, and utilization is what a loan or lease is built to support without tying up working capital you need for payroll, fuel, and the next job's mobilization costs. Whether Komatsu's own captive lender or an independent lender makes more sense for your structure depends on your existing banking relationships and how you want the collateral and personal guarantee handled.

BFC works with contractors nationwide on equipment financing for large wheel loaders like the WA475-11 and WA485-11, structuring terms around your actual utilization rather than a one-size-fits-all payment schedule. A new Dash-11 loader, a late-model used WA470-8 you're upgrading from, or a yard-configured WA485-11 built for your specific quarry contract can all be structured to match seasonal cash flow rather than forcing a flat payment into months where aggregate demand naturally slows.

The Dash-11 generation is a genuine step forward on the spec sheet, not just a model-year refresh, and the fuel, maintenance, and productivity gains compound every month the machine is on a job rather than sitting idle. If you're sizing a loader purchase against an aggregate contract, a demolition cleanup schedule, or a growing material-handling operation, the real question isn't whether the WA475-11 or WA485-11 outperforms its predecessor. It clearly does. The question is which of the two sizes actually matches your truck fleet and your bucket cycle count, and getting the financing structured so the machine pays for itself out of the hours it works.

Ready to talk through financing for your next wheel loader? Apply for equipment financing and our team will walk you through term options built around how you actually run your fleet. You can also browse current listings on our equipment marketplace, visit our homepage to see our full range of financing programs, or subscribe to the blog for the next equipment spotlight.