Kubota D1105 Complete Diesel Engine | New Genuine Kubota

The Kubota D1105 is one of the hardest working engines in Kubota’s 05 Series: a vertical, water cooled, 4-cycle, 3-cylinder diesel with a bore and stroke of 78.0 x 78.4 mm, 1.123 L (68.53 cu in) of displacement, and Kubota’s E-TVCS indirect injection combustion system. The naturally aspirated industrial version is rated 18.5 kW (24.8 HP) at 3000 RPM with 52.7 lb-ft of torque at 2200 RPM, and the bare engine weighs roughly 205 lb dry, with turbocharged D1105-T versions extending the family further. Valley Fuel Injection & Turbo is an authorized Kubota dealer in Woodland, CA, and we supply new genuine Kubota D1105 complete engines through our Kubota engine sales, parts, and service program. Because “D1105” covers multiple factory configurations across several emissions tiers and machine specific specs, we confirm the exact engine against your machine serial number and engine data plate before we quote, so the engine that arrives matches your equipment and its emissions certification.

Application & Fitment

The D1105 family spans several emissions generations and machine specific factory specs:

• D1105-E2B | Tier 2 industrial spec
• D1105-E3B | interim Tier 4 industrial spec, also built as OEM versions such as the Vermeer spec D1105-E3B-VMR-2
• D1105-E4B | current EPA/CARB Tier 4 and EU Stage V industrial spec, engineered to keep the same footprint and mounting points as the E3B so repowers stay straightforward
• D1105-T-E2B, D1105-T-E3B, D1105-T-E4B | turbocharged versions
• D1105-E4-BG and BG2 | generator drive spec rated 15.4 HP standby / 13.5 HP continuous at 1800 RPM
• D1105-E4-UV and D1105-E3-UV | Kubota RTV utility vehicle specs, plus D1105-E2-UV (B26) and D1105-E2-U25 (U25S) machine specs

Confirmed equipment applications for the D1105 include:

• Kubota RTV1100, RTV1100CW9, RTV1140CPX, RTV-X1100C, and RTV-X1120D diesel utility vehicles
• Kubota ZD1211, ZD1211L, and ZD1211R zero turn diesel mowers (24.8 HP), plus the earlier ZD28
• Kubota B26 tractor loader backhoe, U25S excavator, and KX41 series compact excavators
• Toro Groundsmaster 228-D, 328-D, and 7200 series, and Toro Reelmaster 3100-D, 5400-D, and 5500-D (Kubota powered models)
• Jacobsen and other Textron turf equipment built on the Kubota 05 Series platform
• Generator sets, light towers, and welders built on the BG generator drive versions
• Vermeer machines and a long list of OEM power units and industrial equipment

One caution from our own catalog work: the Kubota GL11000 Lowboy II generator uses the smaller D722, not the D1105. If you are not sure what your machine carries, send us the model and serial number and we will verify the engine before anything ships.

Cross-Reference Part Numbers

Kubota also catalogs machine specific D1105 replacement engines under wholegoods part numbers. Verified references include:

• Kubota 1G910-50001 = REPL ENG D1105E4UVA Tier 4, RTV1100 replacement engine, the later emissions revision paired with 1G910-10001
• Kubota 1G910-10001 = REPL ENG D1105E3UV Tier 4, earlier RTV1100 replacement engine
• Kubota 1J032-11001 = D1105-E2-UV replacement engine for the B26 tractor loader backhoe
• Kubota 1J033-00001 = D1105-E2-U25 replacement engine for the U25S excavator
• Kubota KEAOK-10003 | Kubota Engine America overhaul kit for the D1105-E2B and E3B, listed for reference if a rebuild fits your plans better

Kubota part numbers revise as emissions specs update, so we verify the exact current replacement engine number for your serial number before quoting.

Frequently Asked Questions

How do I know which D1105 my machine needs?

The D1105 was built in Tier 2, interim Tier 4, and Tier 4 Final / Stage V generations, in naturally aspirated and turbocharged versions, and in machine specific specs for RTVs, generators, and OEM equipment. The right engine depends on your machine, its build year, and its original emissions certification. Give us the machine model and serial number, plus the engine spec code from the data plate if you can read it, and we will confirm the exact configuration against Kubota’s records before quoting.

Is a new D1105 a true drop-in replacement?

For most machines, yes. Kubota engineered the current E4B generation to keep the same footprint and mounting points as the E3B so repowers stay straightforward, and the machine specific replacement engines, such as the RTV1100 units above, are cataloged by Kubota for exactly that job. New replacement engines supplied through Kubota’s official Engine Replacement program are backed by Kubota’s 3 year, 3,000 hour warranty. We still verify every order by serial number, because accessory mounting, emissions labeling, and spec revisions matter.

Do you support the fuel system on this engine too?

That is our specialty. The D1105 uses Kubota’s E-TVCS indirect injection system with a mechanical injection pump and injectors, and Valley Fuel Injection has been testing and rebuilding exactly this kind of hardware since 1993. Beyond supplying the engine, we service Kubota pumps and injectors in house through our diesel fuel injection services, and customers nationwide use our mail-in rebuild service when the machine is far from Woodland. One call covers the engine and the fuel system behind it.

Why Buy From Valley Fuel Injection & Turbo

• Authorized Kubota dealer with genuine Kubota complete engines, parts, and factory support
• Diesel fuel injection specialists since 1993, based in Woodland, CA
• Serial number verification on every engine order, so the spec and emissions tier match your machine before it ships
• New Kubota replacement engines supplied through Kubota’s official Engine Replacement program carry a 3 year, 3,000 hour Kubota warranty
• In-house injection pump and injector expertise to support the engine for its whole service life

Call For Pricing

Call 530-668-0818 or contact us online. Please have your engine model, the spec code from the engine data plate if available, and your machine model and serial number ready. We will confirm the exact D1105 configuration for your equipment, then quote availability and current pricing.