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PX-520 Series (230 Amps) Heavy-Duty Charging Systems

PX-5RD-230 Amp (Ford) PX-5TD-230 Amp (Left) PX-5TD-6-230 (Right) PX-5GD-230 Amp (Chevy/GMC)
(Also see  PX-422V Series)
(Complete kit consists of alternator w/pulley, external voltage regulator, and harness- see list)
Click Here for Connection Differences Between Early and Late Design PX-5 Alternators
Contact Us For additional PX-5TD information CLICK HERE
For a brochure including other PX-5 models CLICK HERE To see our Application Guide CLICK HERE
To see the PX-525 250-Amp Series CLICK HERE To Compare PX-5 230-Amp & 250-Amp Series CLICK HERE
Convert a Externally Rectified PX-5 to a PX-5 with Dual Positive Posts
To open the PX-5 Parts pages CLICK HERE
PX-5 Heat Sink Evolution

PX-4000 Voltage Regulator         PX-7000 Voltage Regulator

230/190 Amps

Model PX-520 Tested and Proven

Rotor RPM

Amps @ 13.5 volts


HOT (200F)

1800 110 90
2000 130 110
2250 155 130
2500 170 140
2750 185 155
3000 195 160
3500 210 175
4000 215 180
4500 225 185
5000 230 190

Special Features:

  • Dual 5/16" positive output posts.

  • Heavy duty hand wound high output stator.

  • Heavy duty rotor balanced by PennTex in Texas.

  • Heavy duty long life brushes.

  • Heat sinks designed for efficient cooling.

  • Heavy duty bearings with high temperature seals and grease.

  • Eighteen (18) press fit 60-amp diodes.

  • Specially designed heavy duty regulator that produces higher ratings: runs cooler than current industry standards.

  • Regulator has ground fault and high voltage protection.

  • GXL wire is standard in all harnesses.

  • Weight: approximately 25 lbs.


  • Specifically designed and proven to perform in high heat environments.

  • Buses and all other vehicles that require high amperage output.

  • See application guide or contact PennTex for availability of specific application.


  • 24-Volt systems available.

PennTex Industries recommends using a minimum of 2 gauge battery and ground cable. For maximum performance, route 2 gauge battery cable, or larger, from the alternator battery post directly to the positive stud of the battery. The ground cable from the alternator should also be a minimum of 2 gauge cable and be bolted directly to a chassis ground or to the negative side of the battery.


Printable Brochure

Alternator Dimensional Drawings

Alternator Application Guide  Contact Us

To figure out the rotor RPM on your vehicle Click HERE.

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