Factory alternators for the 1GR-FE engine are typically rated up to 80 amps, delivering only around 60 amps at idle. The SBC-T1GRL-320 significantly upgrades your vehicle’s electrical performance, producing up to 320 amps at driving speeds and 80 amps at idle.
This translates to approximately 20 additional amps at idle and up to 240 additional amps at cruising speeds, making it ideal for vehicles with high electrical demands, such as off-road builds, auxiliary lighting, or onboard accessories.
Part of the SBC HP Series, this alternator is built using premium DENSO components and engineered for maximum idle output. Its larger housing improves cooling and durability while maintaining OEM fitment for a straightforward installation.
Each unit is equipped with a precision CNC-machined 6061-T6 aluminum pulley featuring a hard-anodized coating for enhanced strength, efficiency, and long-term reliability. Built to perform under demanding conditions, this alternator is designed as a true heavy-duty upgrade over stock.
Key Features
- Direct OEM replacement – no modifications required
- High idle output for improved low-speed performance
- Up to 320 amps maximum output
- Built with high-quality DENSO components
- Enhanced cooling with durable housing design
- CNC-machined, hard-anodized aluminum pulley
This alternator comes with a full one year warranty.
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