This is a genuine Kubota nozzle holder kit, part number 1G065-53902. It is the complete injector, not just a tip: the holder body, nozzle piece, spring and internal parts come assembled. Kubota lists it for the D1005, D1105 and V1505 diesels in B-series tractors, the BX2660D, RTV1100 and RTV1140CPX utility vehicles, the U25S excavator, the R310 loader and the ZD326 and F2680E mowers. It replaces 1G065-53900.

A worn injector on these small Kubota diesels shows up as hard starting, white smoke on a cold start, a rough idle or a knock on one cylinder. Rule out glow plugs and fuel supply first. If a nozzle dribbles or the spray breaks up, replace the injector. On high-hour engines most shops replace the full set so every cylinder sprays the same.

Specifications

Fits / Applications

• Kubota D1005, D1105 and V1505 diesel engines (match by engine serial)
• Kubota B2320 tractors, earlier engines (Kubota’s B2320DT list changes to 1G677-53903 at engine serial 1CY0001)
• Kubota B26, B2620, B2630 and B3030 tractors
• Kubota BX2660D tractor
• Kubota RTV1100 (CR9, CW9, CRX, CWX) and RTV1140CPX utility vehicles
• Kubota U25S excavator and R310 wheel loader (old type)
• Kubota F2680E front mower and ZD326 zero-turn mowers

Kubota lists the copper gasket and heat seal under each injector as separate parts. Replace both every time an injector comes out. Clean the seat in the head, torque the injector to the Kubota spec for your engine, and bleed the fuel system before cranking.

Part Numbers & Cross Reference

Kubota (superseded) 1G065-53900

Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.

Frequently Asked Questions

Will Kubota 1G065-53902 fit my RTV1100 or RTV1140CPX?

Kubota lists 1G065-53902 for both, but on the RTV1100 and RTV1140CPX it switches between this kit and the lookalike 1G677-53903 by engine serial number. Send us the engine model and serial number and we will confirm which kit yours takes at no charge before anything ships.

What is the difference between 1G065-53902 and 1G677-53903?

They are two lookalike nozzle holder kits for the D1005, D1105 and V1505. Kubota switches between them by engine serial number on the B2320, B26, B2630, B3030, RTV1100, RTV1140CPX and ZD326. On the B2320DT, Kubota’s list changes to 1G677-53903 at engine serial 1CY0001.

Is 1G065-53902 the complete injector or only the nozzle?

It is the complete injector. The holder body, nozzle piece, spring and internal parts come assembled. Kubota lists the copper gasket and heat seal under each injector as separate parts, so replace both every time an injector comes out.

How many 1G065-53902 injectors does the engine take, and is there a core charge?

The D1005 and D1105 take 3 and the V1505 takes 4. It is a new genuine Kubota part that replaces 1G065-53900. It is sold outright, so there is no core charge and nothing to send back.

Related Parts

• Kubota D1005, D1105 & V1505 Fuel Injector for BX2680, RTV-X1100C | Genuine Kubota 1G677-53903
• Kubota V1505 B3030, B3200, F3680 & KX71-3S Injection Pump | Genuine Kubota 16062-51013
• Kubota D905, D1005 & D1105 Engine Injection Pump | Genuine Kubota 16030-51013
• Kubota 05 Series D905, D1005, D1105 & V1505 Engine Stop Solenoid 12 V | Genuine Kubota 17208-60016

Why Buy From Valley Fuel Injection

We are an authorized Kubota dealer and a diesel fuel-injection shop in Woodland, CA, working on diesel engines since 1993. When you call, you talk to people who know Kubota engines and can help you match the part number to your engine serial or machine model before you order. See our Kubota engine sales, parts and service.