Built to restore charging performance on your excavator, this alternator assy cat 330d c9 acert engine 177-9953 delivers stable voltage output across the full RPM range. When OEM alternators fail, the electrical system suffers — ECU faults, sensor dropouts, and dead starts follow. This unit eliminates those issues with a direct-fit design that replaces the original without modifications.

Compatible Machines
– 177-9953
– 330D

Why Choose This Alternator Assy Cat 330D C9 Acert Engine 177-9953
– Brushless rotor rated for 24-hour continuous operation at up to +70°C ambient
– IP54-sealed bearings for dust and moisture protection in Australian quarry and construction environments
– Plug-and-play OEM-matched connector — no wiring modifications required

Heavy-Duty Construction
– Cast aluminium housing with integral cooling fins — reduces operating temperature by up to 15°C versus standard units
– Class H copper windings (rated to 180°C) resist heat degradation under sustained load
– 100% output-tested at 3,000 RPM before dispatch; variance held within ±2%

Maintenance Recommendations
– Operating range: -20°C to +70°C
– Check drive belt tension every 500hrs; output below 13.5V indicates belt slip
– Compatible with standard OEM voltage regulator — no recalibration needed
Australia-Wide Supply
We supply high-quality alternator assy cat 330d c9 acert engine 177-9953 replacement parts across Australia with shipping from NSW. Suitable for aftermarket heavy equipment repairs and undercarriage maintenance applications.