High Output Alternator for Honda Civic (2006-2011) 2.0L

High-Output 200-Amp Alternator for 2006-2011 Honda Civic (FG2/FA5)

What it Does: The 200-Amp High Output Alternator replaces the factory charging unit on the 2006-2011 Honda Civic 2.0L to deliver consistent 14.4-volt power and eliminate voltage drop under high-load electrical demands.

The Stock Honda Civic Electrical Output Weakness

The OEM charging system on the FG2 coupe and FA5 sedan relies on a modest 70-to-105-amp unit (OEM reference 31100-RAA-A01 / Denso 104210-3290). While adequate for bone-stock configurations, the factory stator and avalanche diode assembly buckle under the demands of aftermarket electronics, secondary electric cooling fans, high-output fuel pumps, and high-wattage sound systems. At idle and under high engine bay heat soak, the stock K20Z3 charging output drops significantly, resulting in sub-12.8V charging levels, dimmed lighting, weak ignition coil dwell times, and premature regulator burn-out.

The Engineering Solution

Manufactured in the USA, this upgraded high-output unit integrates a precision-wound, heavy-gauge copper hairpin stator with a heavy-duty avalanche diode rectifier pack. Engineered inside a reinforced cast aluminum housing, it generates a continuous 200 amps of stable current across the RPM range. The precision-balanced rotor prevents high-RPM cavitation and shaft bearing failure at the 8,000-RPM redline of the K-series platform, ensuring rock-solid ignition energy, uninterrupted ECU signals, and maximum auxiliary load capacity without excessive parasitic drag.

What's Included

• 1x 200-Amp High Output Alternator

Technical Specifications

Compatibility

• 2006-2011 Honda Civic Si Coupe 2.0L L4 (FG2)
• 2007-2011 Honda Civic Si Sedan 2.0L L4 (FA5)
• Engineered specifically for K20Z3 2.0L 4-cylinder engines

Frequently Asked Questions & Fitment Warnings

Does this fit the FG2/FA5 Civic?

Yes, this is a direct fit for the 2006-2011 Honda Civic equipped with the K20Z3 2.0L engine; it does not fit Civic 1.8L (R18) or 1.3L Hybrid models.

Do I need to upgrade the main charging wire with this alternator?

Yes, running a "Big 3" wiring upgrade (0-gauge or 4-gauge OFC copper wire from alternator positive to battery, engine ground, and chassis ground) is strongly advised to support full 200-amp throughput safely.

The Honda Performance Caliber

Designed to handle high revs and heavy draw, this high-output alternator delivers steady DC current so your high-revving K-series maintains optimal injector response and spark intensity across every gear.