Member Credit: EddyMaxx
In the process of installing my supercharger (which runs of alternator), I decided to upgrade my OEM alternator to a DC Power 270 Amp Alternator. The OEM alternator is 110 amps. I paid $300 bucks for the DC 270 Amp Alternator. They usually go for $600+ according to the DC Power website.
The DC Power alternator was a direct fit to my 2004 6thgen Maxima. The installation was also straight-forward. I also did the “BIG 3” and upgraded all the wires to 1/0 gauge. This included the grounds and charge wire. I upgraded my battery to a Northstar AGM31 as well (but will save that for another post).
Please keep in mind the factory cables weren’t designed to handle the power of a higher-output alternator, and can restrict the flow of electricity (or cause cables to fry up). The “BIG 3” upgraded is highly recommended.
Fitment:
- 2002 -2006 Nissan Altima 3.5L V6 VQ35DE
- 2004 -2008 Nissan Maxima 3.5L V6 VQ35DE
Installation Photos:
OEM Alternator
DC Power Alternator vs OEM Alternator 
Perfect Fitment
Additional Reference Photos:
| Mounting Type | Direct fit to OEM Mounting |
| Output Voltage | 14.8 |
| Idle Amperage | 200 |
| Hot Idle Amperage @ 200ºF | 180 |
| Max Amperage | 270 |
| Hot Max Amperage @ 200ºF | 250 |
| Pulley | 6 Groove Hard Anodized 6061 Billet Aluminum |
| Doesn’t affect vehicles PCM, Check Engine Light or Charge Light | Yes – w/ Supplied Adapter Harness |
| SKU | 13940-270-XP |
| Stator Configuration | 6 Phase Hairpin |
| Average A/C Ripple Current | 3 Amps |
| Positive Output Stud Size | 8MM x 1.25 Copper |
| Temperature Compensation | Yes with 3-Step Thermal Protection |
| Rectifier | 12 50 amp press fit diodes |
| Rectifier Heatsink | Aluminum |
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