Genuine Kubota Fuel Injection Pump 1G006-51012 for D902 Diesel Engines

The 1G006-51012 is the genuine Kubota fuel injection pump assembly (Kubota catalog description: ASSY PUMP, INJECTION) for the D902 diesel engine, and it is the current factory part number sold through Kubota’s official parts system. The D902 is the 0.9 liter three cylinder diesel that powers a wide range of Kubota mini excavators and compact machines, and this mechanical pump meters and times fuel delivery for all three cylinders. Valley Fuel Injection is an authorized Kubota dealer, so you get the real Kubota pump, new in the box, with full factory backing.

A failing injection pump on a D902 usually shows up as hard starting, excessive smoke, rough idle, low power, or a fuel knock that will not go away. Because pump calibration controls both fuel quantity and timing, installing a genuine calibrated unit restores factory fuel delivery in one step. If you want the fuel system diagnosed before you spend money on parts, our in house diesel fuel injection shop has been testing and calibrating Kubota pumps and injectors since 1993.

Application & Fitment

Confirmed engine application:

• Kubota D902 diesel engine

Aftermarket listings also pair this pump with the Kubota D782, and they list the following Kubota machines. Treat these as probable until verified against your serial number:

• K008-5 mini excavator
• KX018-4 excavator
• KX41-3 excavator
• U10-5 excavator
• U15 excavator
• U17 excavator
• SCL1000 stand-on compact track loader

Kubota used more than one injection pump across the D782 and D902 production run, so the only way to guarantee fitment is the engine serial number. Send us your engine model and serial number and we will confirm the exact pump against the Kubota parts catalog before you order. We can also verify fitment for D902 engines installed in non Kubota equipment through our Kubota engine sales, parts, and service department.

Cross-Reference Part Numbers

• 1G006-51010 (earlier version, listed together with 1G006-51012 by multiple sellers)

One caution: do not confuse this pump with the older 16006-51012 (Zexel 104205-3072) used on earlier D722 and D902 engines. Despite the similar number, that is a different pump, and we have found no Kubota documentation superseding it to 1G006-51012. If your parts book shows 16006-51012, call us first and we will sort out which pump your engine actually needs.

Frequently Asked Questions

How do I confirm 1G006-51012 fits my engine?

Fitment always comes down to the serial number. The D902 application is confirmed by multiple independent sources and this is the current number in Kubota’s official parts system, but Kubota built several pump variants for this engine family. Call us at 530-668-0818 with your engine model and serial number, or your machine model and serial number, and we will verify the correct pump before you buy.

Does 1G006-51012 replace 1G006-51010?

Multiple listings show 1G006-51010 as an earlier version of this pump, and 1G006-51012 is the number currently sold through the Kubota parts system. We will confirm the correct current part number for your specific serial number at no charge before anything ships.

Is there anything special about installing this pump?

Take care with injection timing. The pump seats into the crankcase on a shim pack, so keep the original shims in place unless the crankcase or camshaft has been changed. Use new sealing hardware, and note that installers have reported a separate capture bolt, Kubota T2555-44591, being required on some installations, so check your parts diagram before you start. If you would rather not gamble, our injection shop installs and times these pumps regularly and can test your old unit to confirm the diagnosis.

Why Buy From Valley Fuel Injection

Valley Fuel Injection & Turbo in Woodland, California has specialized in diesel injection since 1993. As an authorized Kubota dealer we sell only genuine Kubota parts with factory warranty, never gray market or copy pumps. The people answering our phones are the same technicians who test, calibrate, and rebuild diesel injection pumps every day, so you get straight fitment answers, not guesses. See our Kubota engine parts and service page for everything else we stock for the D902 family.

Pricing & Availability

Call 530-668-0818 for current pricing and availability on the genuine Kubota 1G006-51012 injection pump. Have your engine model and engine serial number ready and we will verify fitment on the spot. Prefer to write? Contact us here and we will reply with a quote and confirmed fitment.