A machine down on the floor costs you more than the repair. It's the idle operator, the missed job, the customer you had to push. Most of the calls we get start the same way: "I need an S4S and I need it this week."
We're SWAFLY MACHINERY CO., LIMITED, out of Guangzhou, and Mitsubishi S6S and S4S diesels are a steady part of what we keep on the shelf — the workhorses behind a lot of forklifts, skid steer loaders, sweepers and other compact kit.
We don't quote you a number off a nameplate we can't back up. These are engines we actually have, and we'd rather tell you what's really here than promise something that isn't. (Trade terms: EXW Guangzhou.)

The six-cylinder one. It's the engine you put in something that runs all day — forklifts, sweepers, skid steers, the kind of industrial kit that doesn't get a rest day. Practical, dependable, built for long hours. If you're replacing one, tell us the power you need, the install dimensions, and what's hanging off it — accessories, mounts, the lot — and we'll match the unit before it leaves.
The compact four-cylinder. Smaller footprint, same Mitsubishi temperament, and it drops into tight bays where a bigger block just won't fit — forklifts, construction kit, ag and utility machines. Configs differ on power rating and accessory layout, so matching it to your original machine matters more than the model badge. Send us the nameplate or the machine info and we'll check what's sitting in stock.
| Engine | Available power |
|---|---|
| Mitsubishi S4S | 35.3 kW |
| Mitsubishi S6S | 47 kW |
| Mitsubishi S6S | 52 kW |
| Mitsubishi S6S | 63.9 kW |
Ratings by configuration; actual availability changes with stock. Confirm with us before ordering.
Different machines want different things — some need the whole engine, others a long block or a bare unit with specific bits already hung on. Depending on what's in the rack, we can usually sort you into:
Save us both the back-and-forth: send the machine model, original engine model, serial number, or the nameplate photo. The more we have up front, the less chance of a misfit.
Price isn't something we pull out of thin air from a model code. We walk to the rack, read the actual unit, and only then tell you what's here and what it'll run you. A quote built on a guess is the one that blows up halfway through the job — the one built on the real engine in front of us is the one you can actually schedule around.
And on the tight ones, when a truck's already waiting and the old engine's out — having it sitting here means we're not the bottleneck. We're not quoting from a catalogue we hope is right.
These little Mitsubishis go all over — to dealers, workshops, fleet outfits and parts houses on a few continents. None of it moves until we've agreed the spec, the accessories and how it's getting boxed. For export we wrap the block in proper crate padding; we've watched a bare S4S come off a container with the nameplate scuffed from sliding, and that's not a phone call we want from you.
Need an S6S or S4S? Send the machine details and the power you're after. We'll go to the rack, shoot you photos and the nameplate, and come back with a number you can actually book — and a lead time that's honest, not hopeful.
SWAFLY MACHINERY CO., LIMITED
Website: www.swaflyengine.com
Contact us today to check Mitsubishi S6S and S4S engine stock, specifications, photos, and prices.