12V Starter Motor 6676957 6685190 | Direct Fit for Kubota Bobcat

Cross-Reference Verified — Dimensional match on 11-tooth pinion and 11.7 mm mounting holes confirmed before listing.

Technical Specifications

Application Suitability

Why the Same Part Number Arrives with Different Splines

A single base reference often masks variant differences in pinion tooth count and mounting geometry across production runs. Verify the engine serial and machine build date before ordering.

I once replaced a starter on a Kubota V3300 in a quarry fleet where the OEM reference matched the service manual, but the physical unit had a different spline count. The machine sat dead for a week while the correct variant was sourced. Copied cross-reference tables carry these errors forward silently [NEED_CITE: aftermarket cross-reference accuracy in mobile equipment applications].

Fitment Range Across Kubota and Bobcat Platforms

This 12V Starter Motor for Kubota V2203 V3300 Bobcat cross reference fitment covers over 40 machine models spanning skid steers, compact track loaders, and telehandlers. The PLGR design with CW rotation matches the flywheel engagement geometry specified for both Kubota V2203 and V3300 engine families, including turbocharged and direct-injection variants.

Critical Dimensions That Decide Fitment

The 11-tooth pinion with 40.2 mm OD must match the ring gear tooth profile exactly. Three 11.7 mm unthreaded mounting holes position the unit with ±0.1 mm tolerance, eliminating shimming on installation. Terminal post orientation and solenoid clocking determine whether the wiring harness reaches without modification [NEED_CITE: starter motor terminal clocking standards for compact diesel engines].

Decoding the Specification Sheet

The 2.7 kW output at 12V provides cranking torque sufficient for cold starts on 3.3-liter diesel blocks in dusty conditions. PLGR (Permanent Magnet Planetary Gear Reduction) architecture delivers higher torque density than direct-drive units of comparable frame size. CW rotation is fixed by the Kubota flywheel design; a CCW unit would spin freely without engagement. The 11.7 mm mounting holes accept standard M11 hardware without thread interference.

What Happens When Fitment Verification Gets Skipped

A starter that physically bolts on but has the wrong tooth count will grind against the ring gear, destroying both components within days. Incorrect solenoid clocking forces wiring reroutes that expose connections to moisture ingress. These failures show up as warranty claims rather than installation errors, masking the root cause [NEED_CITE: root cause analysis methodology for starting system failures].

Why Buyers Source This Part Here

Own production lines and qualified sourcing partners operate under one warranty, so whether this unit ships from Guangzhou stock or a manufacturing partner, coverage terms remain identical. Identification works from part number, machine model, or a photograph of a worn nameplate. Cross-reference verification covers superseded numbers across Bobcat generations. Sample units ship for physical fitment trials before fleet-level commitments lock in. Technical confirmation on variant differences prevents the wrong unit leaving the warehouse.

Documentation & Verification

• Commercial invoice listing 6676957 and 6685190 with declared value for customs
• Cross-reference sheet marking all 16 alternate numbers as reference only
• Dimensional inspection record covering pinion OD and mounting hole spacing
• Warranty terms covering manufacturing defects for 3–12 months
• Packing photographs showing terminal protection and pinion cover
• HS code and export documentation for destination country clearance

Fitment Check Before Installation

• Count pinion teeth and measure OD against the removed unit before unboxing
• Verify three mounting holes align without force; 11.7 mm ID should slide onto studs
• Check solenoid terminal orientation matches existing wiring harness reach
• Confirm CW rotation marking matches flywheel direction on Kubota block
• If spline count differs, halt installation and request cross-reference recheck
• Test engagement depth by hand before applying cranking voltage

Requesting Fitment Confirmation

Send the machine model and engine serial number, or a clear photograph of the existing nameplate if readable. For units where the plate is painted over or worn, provide the machine serial and build year from the chassis stamp. Bulk orders receive a fitment verification report against your specific serial ranges before dispatch.

Frequently Asked Questions

Q: How do I confirm this starter motor fits my specific machine model and serial range? A: Provide the full machine model and engine serial number. We cross-check against production records to confirm whether your build uses the 11-tooth variant or a superseded configuration. Photographs of the existing unit's label and mounting pattern help when nameplates are damaged.

Q: My old part number differs from 6676957 or 6685190 — is it superseded or a different variant? A: Many Bobcat and Kubota service manuals have updated references across production years. Send your existing number along with the machine serial. We verify whether it maps to this 11-tooth PLGR unit or requires a different pinion configuration.

Q: Why does the same base part number appear with different pinion or mounting specs? A: Engine families like the V2203 and V3300 span multiple displacement and aspiration variants, each with different flywheel ring gears. Manufacturers sometimes use one base reference across variants while changing internal components. Serial-level verification resolves this ambiguity.

Q: I only have the machine model with no readable nameplate — can you still identify the correct part? A: Yes. Provide the machine model and chassis serial number stamped on the frame. We reference build records to determine which engine variant and starter configuration left the factory. A photograph of the mounting area helps confirm physical clearance.

Q: Can I get a sample to verify fitment before ordering in bulk? A: Sample units ship for physical trial on your machines before you commit to fleet quantities. This confirms pinion engagement, terminal orientation, and mounting alignment under real conditions. Bulk orders proceed only after fitment approval.