Product Attributes

Product Details

Product Overview

The 6675292 is a Kubota-spec replacement alternator delivering 12V 90A output with a 1-groove (1PK) pulley, engineered for Kubota V2203 and V3300 series diesel engines and the S-series compact construction machinery that uses them. This Lester-pattern aftermarket unit matches the original charging-system specification of these industrial engine platforms.

This renovated unit has been disassembled, cleaned, re-manufactured and bench-tested to restore the original 12V 90A output and internal regulator performance, and is covered by a 1-year warranty with 30-day dispatch lead-time. The 90-amp rating is factory-correct for the stock electrical load of these diesel engines, supporting glow plugs, instrumentation, lighting and starter-battery charging in tractors, loaders, excavators and generator sets.

Key physical specs: net weight 5.25 kg, gross weight 5.6 kg, overall dimensions 240 x 180 x 170 mm, supplied inside neutral kraft inner carton.

The Kubota V2203 / V3300 Diesel Platform and 90A Charging System

Kubota V2203 and V3300 series diesel engines power a wide range of compact construction machinery, tractors and industrial equipment. A 12V 90A charging system supports the electrical load of the machine, including the starter circuit, instrumentation, work lights and auxiliary equipment.

This unit is specified as 12V 90A, matching the factory charging-system specification of these platforms. The single-groove (1PK) pulley matches the original accessory-belt layout of the Kubota engine drive. Installing a pulley with the wrong groove count or diameter will cause belt mis-tracking, slippage, premature belt wear and charging faults. Always cross-check against your old alternator before ordering.

Technical Specifications

Engine Compatibility and Cross Reference

This alternator fits Kubota engines such as the V2203 and V3300 series and the S-series compact construction machinery that uses them (e.g. S130, S150, S160, S175, S185, S220, S450, S550). Do not rely solely on model name for fitment validation; always verify engine code, old-part OE number, pulley specification and amp label on your original alternator.

Multiple Kubota and supplier OE numbers appear across production batches and market specifications for this same alternator family. If your original unit bears one of the listed cross-reference numbers, 6675292 serves as a direct drop-in replacement.

What to Look for in a Replacement

Follow these five verification steps before placing your order to avoid wrong-part returns:

• 1. Check the amperage label on your old alternator: confirm it is rated for 90A. Different amp ratings are not interchangeable.

• 2. Count pulley grooves: this unit requires 1PK (single-groove). Units with a different groove count are incompatible for this accessory drive setup.

• 3. Confirm the Kubota engine code (V2203 / V3300 family) and machine series of your application.

• 4. Match against OE / reference part numbers stamped on your original housing.

• 5. Weight cross-check: genuine matching unit weighs approximately 5.25 kg net; significant weight difference indicates wrong assembly.

Application Scenarios

• Agricultural and construction machinery workshops servicing Kubota tractors, compact excavators and wheel loaders across Asia-Pacific, Africa, Latin-America, Europe and the Middle East.

• Parts counters and jobbers stocking Japanese diesel-engine and compact-machinery electrical components.

• Fleet operators and rental companies maintaining Kubota-powered equipment.

• Generator-set and industrial-equipment rebuilders sourcing replacement charging components.

• Owners of Kubota-powered machines performing standard electrical maintenance.

FAQ

Q: Which Kubota engines does this alternator fit?
A: It fits Kubota V2203 and V3300 series diesel engines and the S-series compact machinery that uses them (e.g. S130-S550). Always verify against the OE number, pulley and mounting layout of your original alternator before ordering.

Q: Is this alternator new or renovated?
A: This listing is a renovated (remanufactured) unit, factory-tested to restore the original 12V 90A specification, with a 1-year warranty and 30-day dispatch lead-time.

Q: My old alternator shows OE number TA000A48401 or Lester 12390, will 6675292 work?
A: Yes. These numbers belong to the same alternator family, differing only by production revision and market specification. It serves as a direct replacement.

Q: What is the normal charging voltage after installation?
A: With the engine running at idle, battery terminal voltage should read 13.5V-14.5V; with lights and air conditioner on, voltage should not drop below 13V.

Q: What is your warranty and lead-time?
A: Goods are dispatched within 30 days. A 1-year warranty applies from installation date; warranty excludes damage caused by mis-installation, wrong belt tension, or machine-wiring faults.

In Practice

For technicians working on Kubota engine platforms, the following installation guidance follows the original factory maintenance specification.

Preparation: Confirm that the alternator nameplate parameters (12V 90A), mounting hole positions and pulley specification match the engine side. Prepare socket wrench, torque wrench, screwdriver, belt tension gauge, insulating gloves and a cleaning cloth. Disconnect the negative battery cable before starting, and ensure the engine is cold. Clean oil stains and rust from the mounting bracket and the engine connection surface.

Fixing: Place the alternator on the engine mounting bracket, align the mounting holes and insert the fixing bolts (distinguish the main fixing bolts from the adjusting bolts). Screw in the bolts by hand first without fully tightening, leaving space for belt tension adjustment. Adjust the alternator position so the alternator pulley and the engine crankshaft pulley are in the same plane to avoid belt deviation. Tighten with a torque wrench: common Kubota torque is 25-30 N.m for main bolts and 15-20 N.m for adjusting bolts (refer to the engine model maintenance manual).

Belt: Wind the drive belt around the crankshaft pulley, alternator pulley and idler pulley (if fitted) in sequence. Adjust belt tension via the adjusting bolt: with a belt tension gauge, belt deflection should be 5-8 mm under 10 kgf pressure, or approximately one finger width (10-15 mm) when pressing the middle of the belt. Over-tensioning is prohibited as it causes bearing wear and belt breakage. After adjustment, tighten the adjusting-bolt lock nut and recheck the fixing-bolt torque.

Wiring: Connect the B+ terminal (thick red wire) to the battery positive terminal or the starter relay live terminal, secured with an insulating washer and nut at 8-10 N.m. Connect the D+ terminal (thin wire) to the regulator or dashboard charging indicator circuit where applicable. Ensure reliable grounding between the alternator housing and the engine block, polishing off paint, oil and rust on the grounding surface first. Secure the harness with cable ties away from high-temperature components such as the exhaust pipe and moving parts such as the fan.

Testing: Reconnect the battery negative cable, start the engine and run at idle. Observe that the charging indicator goes off. Measure battery terminal voltage: 13.5V-14.5V at idle is normal, and under load (lights and air conditioner on) it should not drop below 13V. Check that the belt shows no slipping noise, no deviation, and that the alternator runs without abnormal vibration or noise.

Safety reminders: Never test the alternator by grounding the B+ terminal directly, as this will instantly burn out the stator windings. Do not press the belt or adjust tension by hand while the engine is running. If you have no repair experience, entrust the work to a qualified auto-electric shop.

References

Vehicle applications and installation guidance are compiled from the KUBOTA engine model-specific maintenance manuals (e.g. V2403 / V3300 / V3800 series), Kubota alternator assembly standard manuals, and DENSO / BOSCH alternator installation technical specifications, cross-checked against actual machine installation tests and after-sales maintenance experience.

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