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Choate Engineering Performance Remanufactured Komatsu, Kawasaki, and XCMG Engines and Cylinder Heads




No patch jobs here. Choate remanufactured industrial engines deliver relentless, high-quality power to keep pushing dirt, rock, and profits.

Precisely matched to your Komatsu, Kawasaki, or Xuzhou (XCMG) excavator, loader, or dozer for flawless operation.

Factory weaknesses like balance or thermal issues, coolant leaks, and cylinder wash are corrected for engines that are tougher than stock.

Upgraded, in-house machined cylinder heads are magnafluxed and pressure-tested to ensure they are crack- and leak-free, and reengineered, blueprinted valve seats improve airflow.

Down machines cost money. We have the inventory to keep you on the job site and out of the shop.

We know the unique problems of every Kawasaki build series and Komatsu data plate dash number - and build the solution right in.
Knowing your 'Dash' number is critical to identifying your Komatsu gen. Each generation features different turbochargers, electronics, and exhaust aftertreatment systems.
| Engine Model | Emission Tier | Exhaust System | Turbo Type |
|---|---|---|---|
| SAA6D107E-1 | Tier 3 | Straight / Muffler (No DPF) | Standard Wastegate |
| SAA6D107E-2 | Tier 4 Interim | KDPF (Soot Filter) | Variable (KVGT) |
| SAA6D107E-3 | Tier 4 Final | KDPF + SCR (Requires DEF) | Variable (KVGT) |
From the workhorse Dash 8 series to the latest Dash 11 intelligence, if your machine appears on the list below, our Choate Komatsu SAA6D107E engine will fit:
If you're missing your tag, provide your machine serial number to our team and we'll verify the build for you.
Dealing with a common CA559 or CA2249 rail pressure code? We made a comprehensive technical guide to diagnosing the most common codes you'll see from the Komatsu SAA6D107E engine series. Check it out here.
Our remanufactured long blocks feature CNC blueprinting, precision balancing, and upgraded internals to outlast OEM replacements. Looking for further customizations? Explore your options on each engine product page.
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