Alternators and Spares

The alternator turns your generator's engine power into electricity. We supply replacement generator alternators and alternator spares from Stamford, Leroy Somer, Mecc Alte, Sincro and Markon, including 2-pole and 4-pole alternators, DC alternators and AVRs. Many larger alternators are quoted to your requirements. Send us your generator details and our parts team will confirm the right unit.

Alternators and Spares
Leroy Somer Alternators and Spares
Leroy Somer Alternators and Spares Leroy Somer Alternators and Spares
Leroy Somer Alternators and Spares
Marelli Alternators and Spares
Marelli Alternators and Spares Marelli Alternators and Spares
Marelli Alternators and Spares
Markon Alternators and Spares
Markon Alternators and Spares Markon Alternators and Spares
Markon Alternators and Spares
MeccAlte Alternators and Spares
MeccAlte Alternators and Spares MeccAlte Alternators and Spares
MeccAlte Alternators and Spares
RFL Alternators
RFL Alternators RFL Alternators
RFL Alternators
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2-pole and 4-pole alternators

2-pole alternators run at 3,000 rpm and are common on smaller portable generators. 4-pole alternators run at 1,500 rpm and suit diesel generator sets built for long run hours. Match the alternator to your engine speed, output, voltage and phase.

Alternators by brand

AVRs and spares

Voltage regulators, diodes, bearings and other spares keep an alternator running. See AVRs or ask our parts team for a specific part.

Repairs and replacement

Our service team diagnoses alternator faults, fits replacement alternators and AVRs, and tests the generator under load. Call 1300 622 436 or see Parts Support.

Alternators and Spares FAQ

Frequently asked questions about Alternators and Spares

Diesel suits long run times, heavy or continuous loads and business backup. It uses less fuel for the same output and lasts longer between services. Petrol costs less upfront and suits light, occasional use.

Call us or send a quote request with your generator's make, model and serial number, and our parts team will confirm the correct part before you order.

Yes. Our service team diagnoses, services and repairs the generators and alternators we sell, and we supply the spare parts.

Most orders are dispatched within 1–2 business days once payment has cleared. Allow 7–10 working days for large items. Deliveries run on weekdays between 9am and 5pm, to ground level only, and someone needs to be there to sign.

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100% Australian owned and operated. Your purchase supports local workers and the national economy.

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Every generator is pre-tested and set up so you can start using it the moment it arrives.

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Join thousands of satisfied customers across Australia who rely on our generators daily.

How to find what power generator you need

The Macfarlane Generators Power Calculator helps you estimate the generator size required for your application by calculating power demand, motor starting loads, and electrical conversions such as kVA, kW, amps, and horsepower. Designed for homeowners, tradies, and industrial operators, it provides practical tools and power consumption guides to help you select the right generator with confidence. Whether you're planning backup power, construction site equipment, or large-scale operations, the calculator simplifies generator sizing and power planning.

Power Calculator Questions? Call us on 1300 622 436