This is the genuine Kubota 1E786-43060. It is the replaceable filter in Kubota’s fuel filter and water separator assembly, and Kubota’s short name for it is FILTER WS. Kubota’s parts lists show it on later common-rail D1803-CR, V2403-CR and V3307-CR engines and on the V3800, and Kubota engine dealers list it for the D1803, V2403, V3307 and V3800. It takes dirt and water out of the fuel before it reaches the supply pump and injectors.

It is the newer version of the 1J430-43060. Kubota’s parts lists mark it as the filter that can be used in place of the older one, and engine dealers list it as the replacement. This is not the main fuel filter cartridge, which on the D1803-CR and V2403-CR is HH1J0-43172. Match the number on your old filter, or have your engine model and serial number ready.

Specifications

Fits / Applications

• Kubota D1803-CR common-rail engines
• Kubota V2403-CR common-rail engines
• Kubota V3307-CR common-rail engines
• Kubota V3800 common-rail engines
• Also replaces 1J430-43060 on earlier builds of the D1803-CR, V2403-CR and V3307-CR
• Kubota D1803-CR-E4B-KEA-2 parts book: listed from engine serial 7MA0001. Before that the book lists 1J430-43060.
• Kubota V2403-CR-TIE4B-KEA-1 parts book: listed from engine serial 7MA0001. Before that the book lists 1J430-43060.
• On the other side of a serial break? Send us the serial number and we will check which part number Kubota calls for.

The water sensor switch in the bottom of the filter is a separate Kubota part. Move it to the new filter, then bleed the air out of the fuel system. Drain water from the separator as part of regular service.

Part Numbers & Cross Reference

Kubota 1E786-43060  ·  Kubota (older filter it replaces) 1J430-43060

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 engines does the 1E786-43060 fit?

Kubota’s parts lists show it on common-rail D1803-CR, V2403-CR, V3307-CR and V3800 engines, and engine dealers list it for the same four. Match the number on your old filter or call 530-668-0818 with the engine model and serial number.

Does the 1E786-43060 replace the 1J430-43060?

Yes. Kubota’s parts lists mark 1E786-43060 as the newer filter that can be used in place of 1J430-43060, and engine dealers list it as the replacement.

Can I use the older 1J430-43060 on an engine built with the 1E786-43060?

Kubota’s parts lists do not show the older filter as a replacement for the newer one. Order 1E786-43060 for an engine that was built with it.

Does the water sensor come with the filter?

Kubota lists the water sensor switch as its own part number. Plan to move the switch from your old filter to the new one.

Related Parts

• Kubota V3300, V3600, V3800 & V3307 Engine Oil Filter Cartridge | Genuine Kubota HH1C0-32430
• Kubota V3800 Common Rail Assembly 1J508-50602 (Genuine)
• Kubota V2403-CR D1803-CR Injection Pump 1J801-50500 (Genuine)
• Kubota V2403 D1803 Fuel Injector 1J808-53052 (Genuine)
• Kubota V2403 D1803 SCV Suction Control Valve 1J801-50540 (Genuine)
• Kubota D1803-CR & V2403-CR Mechanical Fuel Feed Pump (KX040-4, U48-5) | Genuine Kubota 1J801-52030

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 we check the part number against your engine serial or machine model before anything ships, so the right part arrives the first time. See our Kubota engine sales, parts and service.