High Output Alternator for Honda Civic (2006-2011) 1.8L
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High-Output 200A Alternator for 2006-2011 Honda Civic (FA1 / FG1)
What it Does: The 200-amp high-output alternator replaces the factory charging unit on the 2006-2011 Honda Civic to provide stable, elevated amperage output across all engine speeds without system voltage drop.
The Stock Honda Civic Electrical Output Limitation
Factory charging systems on the FA1 and FG1 chassis rely on an OEM unit rated at roughly 70 to 80 amps, engineered strictly to support baseline factory electronics. When aftermarket audio systems, auxiliary lighting, or high-draw electronics are added, the stock alternator quickly saturates. At idle, current delivery falls sharply, forcing deep battery discharge cycles, fluctuating system voltage, diode pack overheating, and severe headlight dimming under high electrical loads.
The Engineering Solution
This 200-amp upgrade increases continuous current capacity over 150% across both idle and cruise RPM bands. Wound with heavy-gauge high-temperature copper wire, heavy-duty avalanche rectifiers, and a solid internal regulator, this unit handles thermal stress and prevents voltage sag. As a true bolt-on replacement for factory units like 31100-RNA-A01 and A2TC1591, it maintains correct serpentine belt alignment and works seamlessly with the factory R18A1 mounting brackets.
What's Included
- 1 x 200-Amp High Output Alternator
Technical Specifications
| Fitment | 2006-2011 Honda Civic (1.8L) |
|---|---|
| Engine / Chassis | R18A1 / FA1 (Sedan), FG1 (Coupe) |
| Stock Output | 140 hp / 128 lb-ft |
| Replaces OEM Part # | 31100-RNA-A01, 31100-RNA-A012-M2, AHGA67, 210-4236, 11176, 11175, 31100-RNE-A01, 31100-RNE-A010M2, AHGA75, A002TC1591, A002TC1591ZCKD, A2TC1591, A2TC1591ZC, A2TC1591ZCKD, 11176-200A |
Compatibility
- 2006-2011 Honda Civic DX 1.8L L4
- 2006-2011 Honda Civic EX 1.8L L4
- 2006-2011 Honda Civic LX 1.8L L4
- 2009-2011 Honda Civic LX-S 1.8L L4
Frequently Asked Questions & Fitment Warnings
Does this fit the FA1 / FG1 Civic?
Yes, this is a direct fit for the 2006-2011 Honda Civic equipped with the R18A1 1.8L engine; it does not fit 2.0L Si (K20Z3) or Hybrid models.
Do I need to upgrade wiring when installing this unit?
A "Big 3" electrical upgrade using 1/0 or 4-gauge power and ground wiring is recommended to handle the maximum 200-amp charge output safely.
The Honda Tuning Caliber
Preserve your JDM build's electrical stability and unleash optimal spark and accessory performance under extreme operating conditions.
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