High Output Alternator for Scion tC (2005-2007) 2.4L

High-Output 250-Amp Alternator for 2005-2007 Scion tC (ANT10)

What it Does: The 250-amp high-output alternator upgrades the charging system on the 2005-2007 Scion tC to eliminate idle voltage drop and sustain high-draw electrical accessories.

The Stock Scion tC Electrical Bottleneck

The factory charging system in the first-generation ANT10 chassis relies on an OEM Denso unit rated at roughly 80 to 100 amps. When running auxiliary audio amplifiers, performance cooling fans, air suspension compressors, or upgraded ignition components, this stock output fails to meet amperage demand. Under heavy continuous electrical load or low-RPM idle conditions, severe system voltage drop occurs. This strains the battery, causes erratic sensor feedback on the 2AZ-FE ECU, induces ignition coil dwell instability, and accelerates internal diode thermal failure.

The Engineering Solution

Engineered and manufactured in the USA, this 250-amp heavy-duty charging unit provides over double the factory capacity. Built with precision-wound heavy-gauge copper stators, reinforced internal bridge rectifiers, and high-temp rated avalanche diodes, it resists thermal breakdown and rotor heat-soak. The casing integrates factory-spec mounting tabs to mate cleanly with OEM brackets, directly replacing OEM part numbers 27060-28260, 104210-3780, 210-0547, and 11088-250A without requiring custom bracket fabrication.

What's Included

• 1 x 250 Amp High Output Alternator

Technical Specifications

Compatibility

• 2005 Scion tC Base Coupe 2.4L I4 (2AZ-FE)
• 2006 Scion tC Base Coupe 2.4L I4 (2AZ-FE)
• 2007 Scion tC Base / Spec Coupe 2.4L I4 (2AZ-FE)

Frequently Asked Questions & Fitment Warnings

Does this fit the ANT10 tC?

Yes, this is a direct bolt-on fit for the 2005-2007 Scion tC equipped with the 2.4L 2AZ-FE engine.

Do I need to upgrade my battery cables for a 250-amp alternator?

A 1/0 AWG 'Big Three' wiring upgrade (alternator-to-battery positive, chassis-to-battery negative, engine block ground) is strongly recommended to handle 250 amps safely without voltage drop.

The Scion Tuner Standard

For modified JDM sport compacts, clean electrical current is vital. Delivering rock-solid 14.4V rail stability across all RPM ranges, this unit ensures your fuel pumps, coils, and electronics receive uninterrupted, maximum power.