Denso24V Alternators & Starters

Denso

24V Alternators & Starters

Denso Heavy-Duty Marine Electrical Systems

Electrical

24V Alternators & Starters - Denso Heavy-Duty Marine Electrical Systems

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Engineer's Note: This list includes validated OEM part numbers for 10,000hr (Top End) and 20,000hr (Major) overhauls. Quantities are per single engine unit.

Select	System	Part Name	OEM P/N	Qty	Notes
	Alternators	24V 100A Heavy-Duty Alternator	101211-1100	1	STANDARD MARINE SPEC \| 2,400W output \| SAE flange \| IP23 sealed \| Replaces Yanmar 129407-77010, Cummins 3957589 \| MY (DENSO Malaysia)
	Alternators	24V 150A Heavy-Duty Alternator	101211-1500	1	3,600W output \| FPSO/large commercial \| Integrated regulator \| External cooling fan for tropical service \| MY (DENSO Malaysia)
	Alternators	24V 75A Compact Alternator	100211-XXXX	1	1,800W output \| Smaller auxiliary engines \| Cost-effective backup/secondary \| Replaces Yanmar 119209-77010 \| MY (DENSO Malaysia)
	Alternators	Alternator Repair Kit	101211-REPAIR-KIT	1	MARGIN ITEM \| Brush Set + Regulator \| RM250-400 vs full alternator RM800-1,200 \| 33-50% savings \| MY (DENSO Malaysia)
	Alternators	Alternator Pulley & Belt	ALT-PULLEY-BELT	1	Multi-groove serpentine \| Check during replacement \| 80-hour service interval \| MY (DENSO Malaysia)
	Starters	24V 7-10kW Reduction Gear Starter	228000-0251	1	STANDARD MARINE STARTER \| 11-13 tooth pinion \| IP23 sealed \| Marine-duty bearings \| Replaces Yanmar 119209-77010, Cummins 3957589 \| MY
	Starters	24V 7-10kW Starter Variant	228000-0142	1	Alternative pinion configuration \| Slow-speed marine engine starting \| MY (DENSO Malaysia)
	Starters	24V 7-10kW Starter Variant	228000-0111	1	Alternative variant \| Yanmar 6AY, 6N21 Series, Cummins KTA19 \| MY (DENSO Malaysia)
	Starters	OSGR High-Torque Starter	428000-XXXX	1	Optimized-Speed Gear Reduction \| Increased torque delivery \| Cold-start difficult conditions \| Heavy-duty propulsion \| MY
	Starters	Starter Repair Kit	228000-REPAIR-KIT	1	Pinion + Brushes + Solenoid \| Common wear items \| 40-50% cost savings vs full starter \| MY (DENSO Malaysia)
	Starters	Starter Solenoid Assembly	228000-SOLENOID	1	Separate solenoid replacement \| Pinion engagement failure \| RM150-250 vs RM400+ full starter \| MY (DENSO Malaysia)
	Wiring	ECU Wiring Harness	ECU-HARNESS-MARINE	1	Tinned copper marine-spec \| Salt-corrosion resistance \| 10-year marine service life \| Prevents ECU dropout \| MY
	Wiring	Fuel Pump Relay (24V)	RELAY-24V-FUEL	1	Fuel pump engagement \| Relay chattering = power intermittency \| 8-10 year failure rate \| MY (DENSO Malaysia)
	Wiring	Marine-Grade Battery Cables	BATTERY-CABLE-TINNED	1	Tinned copper connectors \| Prevents green corrosion in salt-air \| Replace 5-7 year intervals \| MY (DENSO Malaysia)