High Output Alternator for Honda S2000 (2004-2009) 2.2L

High-Amp 220A Charging Solution for 2004-2009 Honda S2000 (AP2)

What it Does: The High Output Alternator upgrades the factory charging system on the 2004-2009 Honda S2000 to deliver a sustained 220 amps, stabilizing primary rail voltage for aftermarket electronics, dual fuel pumps, and high-draw cooling fans.

The Stock Honda S2000 Charging System Limitation

The OEM **AP2** charging architecture utilizes a factory 105-amp Denso alternator engineered strictly for factory electrical loads. High-RPM track use, high-flow fuel pumps, auxiliary oil coolers, and modern electronics induce severe voltage sag, especially at idle. This thermal and electrical strain degrades factory diodes and regulator circuitry, causing ignition misfires under load, diminished spark energy from the coil packs, and battery depletion.

The Engineering Solution

Manufactured in the USA, this direct-replacement alternator features high-temperature copper windings and heavy-duty rotor wire designed to produce up to 220 peak amps with exceptional low-RPM amperage recovery. Integrated heavy-duty avalanche rectifiers provide superior heat dissipation, mitigating diode breakdown from extended 8,000+ RPM runs. The unit mounts directly to the **F22C1** accessory bracket using the OEM belt tensioner footprint and interchanges seamlessly with original equipment part number **31100-PZX-003** and **102211-1770**.

What's Included

• 1 220-Amp High Output Alternator

Technical Specifications

Compatibility

• 2004-2009 Honda S2000 Base 2.2L
• 2008-2009 Honda S2000 CR (Club Racer) 2.2L

Frequently Asked Questions & Fitment Warnings

Does this fit the AP2 S2000?

Yes, this is a direct fit for the 2004-2009 Honda S2000 equipped with the **F22C1** engine.

Do I need to upgrade the primary charging wire?

Upgrading the primary B+ charging wire to 4-gauge or 0-gauge with an inline fuse is strongly recommended to safely deliver the full 220-amp potential to the battery.

The Honda Performance Caliber

Engineered to match the high-revving demands of the legendary VTEC platform, this charging system supplies clean, uninterrupted current to maintain steady air-fuel ratios and maximum ignition coil saturation under aggressive driving conditions.