1G023-63010 Starter Motor | Cross-Reference for Kubota D722 D782

Verified Fitment — cross-reference chain for Kubota D722 and D782 starter motors confirmed against machine serial ranges before dispatch.

Technical Specifications

Application Suitability

Superseded Numbers and Variant Traps in Kubota Starter Applications

The same base starter number can ship in multiple variants across Kubota production runs, and copied cross-reference tables often carry errors forward.

When a Kubota D722 or D782 engine needs a replacement starter, the part number on the old unit might read 67980-31150, 67980-31151, or 67980-31152. These numbers represent a supersession chain across production years, and a 12V 9T Starter Motor for Kubota D722 D782 / 1G023-63010 cross reference fitment must account for all three. I have seen buyers order from a catalog listing only the latest number, then discover the mounting flange on their earlier engine block does not accept the newer bracket pattern. One workshop held a machine down for three days because the port orientation on the replacement starter was rotated compared to the original, and the wiring harness would not reach without modification [NEED_CITE: Kubota starter motor supersession and variant identification practices].

Cross-reference tables circulated among aftermarket sellers frequently contain transcription errors or omit intermediate numbers in the chain. A starter listed as fitting a GR2120 might actually be the variant intended for the GR2120B, which uses a different electrical connector type despite sharing the same base part number family.

Fitment Verification Across Kubota Tractor and Mower Models

This 12V 9T Starter Motor for Kubota D722 D782 / 1G023-63010 cross reference fitment covers a broad range of Kubota equipment, from the BX1500D compact tractor through the ZD series zero-turn mowers. The application list extends across G2160 variants, GR2100 series commercial mowers, and TG1860 lawn tractors, all equipped with Kubota D722, D782, or D722E-GX engines. Identifying the correct starter becomes straightforward when the machine model is known, even if the nameplate is worn or painted over beyond readability.

Electrical Connector and Mounting Pattern Differences

Within the GR2100, GR2110, and GR2120 model family, the base starter number may appear identical, yet the electrical connector configuration and mounting bracket geometry differ between production years. The pinion gear must mesh correctly with the flywheel ring gear, and the 9-tooth count is specific to these Kubota engine blocks. Before confirming a fleet-level order, we recommend verifying the connector pin count, terminal orientation, and mounting bolt spacing against the removed unit [NEED_CITE: starter motor terminal and connector variation across equipment generations]. A sample unit allows physical trial fitment on one machine before committing to larger quantities.

Voltage Rating and Pinion Engagement Specifications

The 12V rating suits the electrical systems found across Kubota compact tractors and commercial mowers in this power class. The 9-tooth pinion must engage the flywheel ring gear with correct depth and backlash; too shallow an engagement causes grinding on crank attempts, while excessive depth accelerates wear on both the pinion and ring gear teeth. The ISO-certified manufacturing process holds dimensional tolerances on the pinion shaft diameter and gear tooth profile within the ranges required for reliable engagement across the D722, D782, and D722E-GX engine serial ranges.

The Cost of Installing a Mismatched Starter Variant

Ordering a starter that physically bolts on but has the wrong connector type means fabricating an adapter harness on site, introducing a failure point that will surface during the next wet season. A pinion with incorrect tooth profile or shaft length might engage initially but produce abnormal noise and accelerated ring gear wear, leading to a far more expensive repair than the starter replacement alone was meant to address. Returning a mismatched unit across borders involves freight costs and lead times that compound the original downtime [NEED_CITE: aftermarket parts return logistics and fitment dispute resolution].

Why Source This Starter Through Our Identification Process

Our technical team confirms fitment by cross-referencing the machine model, engine serial number, and any readable part number from the old unit, covering the full supersession chain from 67980-31150 through 67980-31152. We supply from one piece upward, so a single emergency replacement ships without minimum order barriers. Guangzhou warehouse stock enables fast dispatch on common Kubota starter applications. Sample units are available for physical fitment confirmation before you approve a fleet-level purchase. Cross-reference verification covers discontinued and alternate numbers, catching errors that copied tables miss.

Documentation & Verification

• Commercial invoice and packing list referencing machine model and engine serial
• Part compatibility sheet listing verified cross-reference numbers (reference only)
• Dimensional inspection record covering pinion tooth count and mounting flange pattern
• Warranty terms covering manufacturing defects for 3 to 12 months
• Packing photographs showing unit condition before crating
• HS code and customs documentation support for international shipment

Fitment Check Before Installation

• Compare mounting bolt hole spacing on the new starter against the removed unit before wiring
• Verify electrical connector type and terminal orientation match the machine harness
• Check pinion gear tooth count and mesh depth by hand-rotating the drive into the ring gear
• Confirm voltage rating matches the machine electrical system before connecting battery cables
• If any dimension or connector does not match, halt installation and contact us for cross-reference review

Request a Fitment Confirmation Before Ordering

Send us the machine model, engine serial number (D722, D782, or D722E-GX), and a photograph of the old starter if the part number is still legible. We will cross-reference the supersession chain and confirm which variant fits your specific build, then quote availability and dispatch timing for your review.

Frequently Asked Questions

Q: How do I confirm this starter fits my Kubota machine when the nameplate is gone? A: Provide the machine model and engine serial number. We cross-reference against known fitment data for Kubota D722, D782, and D722E-GX engines, covering models from BX1500D through ZD323. A photograph of the old starter, even with a worn label, helps us verify connector type and mounting pattern before we confirm compatibility.

Q: My old starter shows 67980-31150 but the listing mentions 67980-31152 — are they the same? A: These numbers form a supersession chain across Kubota production runs. We verify which generation your specific engine build requires by checking the machine model and engine serial range. Ordering the wrong generation may result in a connector or mounting bracket mismatch, so we confirm the correct variant before shipping.

Q: Does one starter part number cover both my GR2120 and ZD21? A: Both machines appear on the verified fitment list, but the GR2120 and ZD21 may use different electrical connector configurations or mounting bracket variants despite sharing a base starter number family. Send us the engine serial from each machine so we can confirm whether a single part number covers both units in your fleet.

Q: Can I order one sample to test fitment before buying for the whole fleet? A: Yes. We supply from one piece upward with no minimum order requirement. Order a single sample unit, trial-fit it on one machine to confirm physical dimensions, connector type, and pinion engagement, then proceed with a fleet-level order once fitment is verified on your equipment.

Q: Why are there multiple OEM reference numbers listed for the same starter? A: Kubota revised the starter part number across different production years and engine build variations. The numbers 67980-31150, 67980-31151, 67980-31152, and 1G023-63010 all serve as cross-reference identifiers (reference only). We determine which specific number applies to your machine by matching your engine serial and model against the supersession records.