This is a genuine Kubota nozzle holder kit, part number 1G677-53903. 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, BX2670, BX2680 and LX2610 tractors, RTV-X1100C, RTV-X1120D and RTV-X1140 utility vehicles, F-series front mowers, ZD1211, ZD326 and ZD331 zero-turn mowers and the KX030-4, KX71-3S and U27-4 excavators. It replaces 1G677-53900 and 1G677-53902.

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 engines, including the D1005 in the BX2680
• Kubota D1105 engines, including the D1105-E4 in the RTV-X1100C
• Kubota V1505 engines
• Kubota B2301, B2401, B2601, B2650, B2920, B3000, B3200 and B3300SU tractors
• Kubota B2320 tractors from engine serial 1CY0001, plus B26, B2630 and B3030 (check engine serial)
• Kubota BX2670, BX2680 and LX2610 tractors
• Kubota RTV-X1100C, RTV-X1120D and RTV-X1140 utility vehicles; RTV1100 (CR9, CW9, CRX, CWX) and RTV1140CPX by engine serial
• Kubota F2690, F3080 and F3680 front mowers
• Kubota ZD1211, ZD326 and ZD331 zero-turn mowers
• Kubota KX030-4, KX71-3S and U27-4 excavators

The copper gasket and heat seal under each injector are separate Kubota parts (on the B2320, for example, 15841-53622 and 19077-53650). 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Kubota (superseded) 1G677-53900  ·  Kubota (superseded) 1G677-53902

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

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

They are two lookalike Kubota kits for the D1005, D1105 and V1505. Kubota switches between them by engine serial number on the B2320, B26, B2630, B3030, RTV1100, RTV1140CPX, ZD326, ZD331 and F3680. Call 530-668-0818 with the engine model and serial number and we will tell you which one you need at no charge.

Does 1G677-53903 fit the BX2680 and RTV-X1100C?

Yes. Kubota lists it for the D1005 in the BX2680 and the D1105-E4 in the RTV-X1100C. It is also listed for the BX2670 and LX2610 tractors and the RTV-X1120D and RTV-X1140.

From which engine serial does the B2320 take 1G677-53903?

Kubota lists 1G677-53903 for B2320 tractors from engine serial 1CY0001. The B26, B2630 and B3030 also depend on engine serial, so give us the serial and we will confirm before anything ships.

Does 1G677-53903 replace 1G677-53902, and how many does my engine need?

Yes. It replaces 1G677-53900 and 1G677-53902. The D1005 and D1105 take 3 injectors and the V1505 takes 4.

Related Parts

• Kubota D1005, D1105 & V1505 Fuel Injector, Nozzle Holder Kit | Genuine Kubota 1G065-53902
• Kubota D905, D1005 & D1105 Engine Injection Pump | Genuine Kubota 16030-51013
• Kubota V1505 B3030, B3200, F3680 & KX71-3S Injection Pump | Genuine Kubota 16062-51013
• 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.