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Aftermarket replacement turbocharger for Komatsu SA6D110 and S6D105 engines (D66S-1 dozers). It replaces Komatsu part number 6138-81-8101: the turbocharger listed by Komatsu as part number 6138-81-8101.
Fits Komatsu SA6D110 and S6D105 engines (D66S-1 dozers). It is built to the same mounting, wiring and connector layout as the part it replaces, so it fits in place of the old one without changes to the machine.
Check the part number on the label of the old unit, or in the parts manual for your machine's serial number range, before ordering. Sold as a single unit, shipped worldwide.
| Part Type | Turbocharger |
| Replaces | Komatsu 6138-81-8101 |
| Turbo Model | T04B59 |
| Fits | Komatsu SA6D110 and S6D105 engines (D66S-1 dozers) |
| Condition | New, aftermarket |
| Stat. HS-Code | 841480 |
Komatsu machines and engines
Check the part number on your old unit before ordering.
| Pack | Komatsu Part No.(SPM Part No.) | Fits |
|---|---|---|
| 1 Piece | 6138-81-8101(SPM-HEP-2526) | Komatsu SA6D110 and S6D105 engines (D66S-1 dozers) |
Loss of power and black smoke
A worn turbo stops building boost: the machine feels flat under load and smokes. Check the air filter and intake hoses first, then the turbo.
Oil leaks and blue smoke
Worn shaft seals let oil into the intake or exhaust. Replace the turbo before oil starvation damages the engine.
Noise and shaft play
A whistle or grinding from the turbo, or play in the shaft, means the bearings are going. Change the turbo before the wheels touch the housing.
Fitting tips
Fit new gaskets, prime the turbo with clean oil, change the oil and filter, and check the oil feed and drain lines before starting.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| eBay, aftermarket seller | USD 185.73 | 5 Oct 2026 |
| Spare Part Mart | USD 148.58 | Today |
Our price of USD 148.58 is approximately 20% less than this seller.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
No. It is an aftermarket part made to fit in place of Komatsu 6138-81-8101. It is not made by or affiliated with Komatsu; the Komatsu part number is used only to show what it replaces.
It fits Komatsu SA6D110 and S6D105 engines (D66S-1 dozers). Machines change parts between serial number ranges, so check the number on your old part or in your parts manual.
It is made to the same mounting and connections as the original part. Fit new gaskets and seals where they are used, and check for leaks and correct operation before putting the machine back to work.
Yes, we ship worldwide. Shipping is calculated at checkout, and every order is covered by our 30 day money back guarantee and price beat guarantee.
Prices depend on your postcode.
In USD for the quantity selected. The exact cost is confirmed at checkout.
