Collection: Alternators & Accessories - High-Output Alternators & Brackets

Alternators & Accessories - High-Output Alternators & Mounting Brackets

Upgrade your vehicle's charging system with our comprehensive range of high-output alternators and accessories designed for Australian V8 conversions, street machines, and custom builds. From 100-200+ amp alternators to billet mounting brackets and pulleys, we stock everything you need for reliable electrical power in high-demand applications.

High-Output Alternators

100-140 Amp Alternators: High-output alternators for street performance builds with electric fans, fuel pumps, and accessories
150-200+ Amp Alternators: Extreme-output alternators for race cars, show cars, and vehicles with high electrical loads
One-Wire Alternators: Simplified wiring alternators requiring only battery connection for easy installation
Internally Regulated Alternators: Self-contained voltage regulation for reliable charging
Polished & Chrome Alternators: Show-quality finishes for engine bay presentation

Alternator Mounting Brackets

Alternator Brackets: Billet aluminium and steel mounting brackets for small block Chevy, big block Chevy, LS, and Ford engines
Adjustable Brackets: Slotted brackets for belt tension adjustment and alternator positioning
Low-Mount Brackets: Relocated alternator brackets for custom engine bay clearance
Polished Brackets: Show-quality billet aluminium brackets for clean engine presentation

Alternator Pulleys & Accessories

Alternator Pulleys: Overdrive and underdrive pulleys to optimize alternator speed and charging output
Pulley Spacers: Shims and spacers for proper pulley alignment
Alternator Hardware: Mounting bolts, washers, and adjustment hardware

Alternator Wiring & Electrical

Alternator Wiring Kits: Complete wiring harnesses with proper gauge wire and terminals
Battery Cables: Heavy-gauge cables for alternator-to-battery connections
Voltage Regulators: External voltage regulators for precise charging control

Why Upgrade to High-Output Alternators?

Factory alternators are designed for stock electrical loads (typically 60-80 amps). Modified vehicles with electric cooling fans, high-output fuel pumps, electric water pumps, upgraded audio systems, and accessories quickly exceed factory alternator capacity. Insufficient charging causes voltage drop, dim lights, poor fuel pump performance, and battery drain. High-output alternators (100-200+ amps) provide adequate power for all electrical demands while maintaining proper voltage. One-wire alternators simplify installation by eliminating external voltage regulators and complex wiring.

Alternator Selection Guide

Calculating Required Output: Add up all electrical loads (lights, fans, fuel pump, ignition, accessories) and add 25% safety margin. Example: 40A fans + 20A fuel pump + 15A ignition + 10A accessories = 85A total. Add 25% = 106A minimum alternator capacity. Choose 120-140A alternator for adequate headroom.

One-Wire vs Externally Regulated: One-wire alternators are self-exciting and require only battery connection—ideal for street rods and simple installations. Externally regulated alternators provide more precise voltage control and faster charging at idle—better for race cars and high-performance applications.

Pulley Ratio: Alternator should spin 2-3 times crankshaft speed for proper charging. Overdrive pulleys increase alternator speed for better low-RPM charging. Underdrive pulleys reduce alternator speed to free up horsepower (only suitable if alternator output is adequate at reduced speed).

Common Alternator Applications

V8 engine conversions requiring high-output charging
Street machines with electric cooling fans and fuel pumps
Show cars with polished and chrome alternators
Race cars with high electrical demands
Custom builds with relocated alternator mounting
Hot rods with simplified one-wire alternators
Vehicles with upgraded audio systems

Related Electrical Components

Complete your charging system upgrade with complementary components:

Electrical Components: Complete range of ignition, wiring, and electrical parts
Drives & Pulleys: Performance pulleys and belt systems
Engine Accessories: Complete range of performance engine components

Installation Tips

Bracket Installation: Mount alternator bracket to solid engine block mounting points, not accessories. Ensure bracket is properly supported and won't flex under belt tension. Use thread locker on all mounting bolts.

Belt Tension: Adjust belt tension so belt deflects 6-12mm with moderate thumb pressure at longest span. Over-tensioning causes bearing failure, under-tensioning causes slippage and poor charging. Check tension after first 100km and adjust as needed.

Wiring: Use minimum 8-gauge wire for alternator output to battery. 6-gauge or 4-gauge recommended for high-output alternators (150A+). Keep wire runs as short as possible. Use proper crimp terminals and heat shrink for reliable connections.

Voltage Check: Verify charging voltage at battery terminals with engine running at 2000 RPM. Should read 13.8-14.4 volts. Lower voltage indicates charging problem, higher voltage indicates regulator failure.