Kubota Fuel Injector Kit 1J703-53076 | Genuine V2607 Common Rail Injector

Kubota part number 1J703-53076 is the current genuine INJECTOR,KIT for the 1J703 common rail injector line, the injector fitted to Kubota’s V2607-CR-E5 engine family. It is the factory replacement for every earlier number in the series, so whether your parts book calls for 1J703-53070, 1J703-53073, 1J703-53074, or 1J703-53075, this is the injector Kubota supplies today. Valley Fuel Injection is an authorized Kubota dealer, and we have been repairing and replacing diesel injection systems in Woodland, California since 1993. When you order from us you get the genuine part, checked against your engine serial number before it ships.

Application & Fitment

Kubota introduced the 1J703 injector line for the V2607-CR-E5 generation of its 2.6 liter common rail diesel. Based on the part numbers 1J703-53076 supersedes, it serves:

Engine models

• Kubota V2607-CR-E5, the engine in the KX057-5 and U55-5 compact excavators
• Kubota V2607-CR-E5-WL, the wheel loader version fitted to the R540

Equipment applications

• Kubota KX057-5 compact excavator
• Kubota U55-5 compact excavator
• Kubota R540 wheel loader
• Volvo compact machines built on the D2.6 engine, which parts listings tie to the predecessor numbers in this series, call to confirm your application

Common rail parts can change at engine serial number breaks, so before we ship anything we confirm your exact application in Kubota’s parts system. Have your engine model and serial number handy when you call and we will verify the fit for you.

Cross-Reference Part Numbers

1J703-53076 is the latest number in Kubota’s supersession chain for this injector. It replaces the following genuine Kubota part numbers:

• Kubota 1J703-53070
• Kubota 1J703-53073
• Kubota 1J703-53074
• Kubota 1J703-53075

Unlike some of Kubota’s other common rail injectors, we have not verified a published Denso or Caterpillar cross number for the 1J703 series. If you are trying to match an injector by a number that is not on this list, call us and we will run it through our cross reference resources.

Frequently Asked Questions

Does 1J703-53076 replace my older 1J703 injector?

Yes. Kubota has superseded 1J703-53070, 1J703-53073, 1J703-53074, and 1J703-53075 to this number. It installs in place of any of them as the current factory replacement, so order 1J703-53076 even if your old injector or parts diagram shows an earlier number.

How do I know this injector fits my machine?

The quickest way is to give us your engine model and engine serial number. Kubota occasionally splits fitment at serial number breaks, and we check every order against the factory parts system before it ships. If your machine is a KX057-5, U55-5, or R540 you are almost certainly in the right place, but a two minute call to 530-668-0818 removes all doubt.

Should I replace one injector or all of them?

That depends on why the injector failed. If fuel contamination or a failing supply pump took out one injector, the others have usually suffered too, and dirty fuel will quickly kill a new injector. We are a full common rail repair shop, so we can test your injectors, inspect the rest of the system, and tell you honestly whether one injector or a full set makes sense. Learn more about our diesel fuel injection services or give us a call to talk it through.

Why Buy From Valley Fuel Injection

• Authorized Kubota dealer. This is a genuine Kubota injector kit sourced through Kubota’s dealer network, not a lookalike import.
• Diesel injection specialists since 1993. We diagnose, test, and repair fuel systems every day in our Woodland, CA shop, so we know these engines, not just the part numbers.
• Fitment verified before shipping. Every order is checked against your engine model and serial number.
• Complete Kubota support. From single parts to complete engines, see our Kubota engine sales, parts, and service page for everything we offer.

Pricing & Availability

Call 530-668-0818 for current pricing and availability on the 1J703-53076 injector kit, or reach us through our contact page. Please have your engine model and engine serial number ready so we can confirm fitment and quote the right part the first time.