This is a genuine Kubota nozzle holder kit, part number 16871-53904. It is the complete injector, not just a tip: the holder assembly, nozzle piece, spring and internal parts come together. It fits Kubota D722 and D902 three-cylinder and Z482 and Z602 two-cylinder diesels. Kubota lists it for BX1860, BX1870, BX1880, BX2360, BX2370, BX2380, BX23S and BX25 tractors, RTV900 and RTV-X900 utility vehicles, GR2110 and GR2120 garden tractors, ZD1011, ZD1021, ZD221, ZD321 and ZD323 mowers, the SCL1000 loader and K008, KX018-4, KX41-3, U10-5 and U17 excavators. It replaces 16871-53900 and 16871-53902.

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 D722 and D902 three-cylinder diesel engines
• Kubota Z482 and Z602 two-cylinder diesel engines
• Kubota BX1860, BX1870, BX1880, BX2360, BX2370, BX2380, BX23S, BX25 and BX25D tractors
• Kubota RTV900 (2009 and later 9-series and XT models) and RTV-X900 utility vehicles
• Kubota GR2110 and GR2120 garden tractors
• Kubota ZD1011, ZD1021, ZD221, ZD321 and ZD323 zero-turn mowers
• Kubota K008-3, K008-5, KX018-4, KX41-3, U10-5 and U17 excavators
• Kubota SCL1000 stand-on compact loader

The copper gasket and heat seal under each injector are separate Kubota parts (on the BX1860, 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Kubota (superseded) 16871-53900  ·  Kubota (superseded) 16871-53902

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

Is 16871-53904 a complete injector or just the nozzle?

It is the complete injector. The holder assembly, nozzle piece, spring and internal parts come together. Kubota also sells the bare nozzle holder body as 16871-53002, and that is not the complete kit.

Does 16871-53904 fit a BX2380, BX25 or RTV-X900?

Yes. Kubota lists it for the BX1860, BX1870, BX1880, BX2360, BX2370, BX2380, BX23S and BX25 tractors, the RTV-X900, and the RTV900 in 2009 and later 9-series and XT models. It replaces 16871-53900 and 16871-53902.

How many 16871-53904 injectors does a D902 or Z482 take?

The D722 and D902 take 3. The Z482 and Z602 take 2.

Are the copper gasket and heat seal included with 16871-53904?

No. They are separate Kubota parts. On the BX1860, for example, they are 15841-53622 and 19077-53650, and both should be replaced every time an injector comes out.

Related Parts

• Kubota D722 & D902 Injection Pump for BX, RTV-X900, GR & ZD | Genuine Kubota 16006-51012
• Kubota Super Mini Z482, Z602, D722 & D902 Engine Stop Solenoid 12 V | Genuine Kubota 16851-60015
• Kubota RTV900 (D902) Mechanical Fuel Lift Pump, 2004 to Early 2011 | Genuine Kubota 1G961-52030
• Kubota GL7000 & GL11000 Generator (Z482, D722, D902) Fuel Injector | Denso 093500-4100 New

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.