PX-7 Series (230 or 250 Amps)   Purpose-Built Heavy-Duty Charging Systems

PX-7RD-230 & PX-7RD-250
(Contact PennTex for pricing)    
(A complete kit consists of an alternator w/pulley, external voltage regulator, and harness)  
This alternator has PennTex PX-5 output with a rear housing that is a little shorter than a PX-5.
Open a PX-7 Flyer
Open the current PX-7 Parts Pages
To see our Application Guide CLICK HERE
Purchase Parts - Contact a Penntex Distributor
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230/190 AMPS

Model PX-7_D-230 Tested and Proven

Rotor RPM

Amps @ 13.5 volts


HOT (200?

1800 110 80
2000 130 105
2250 155 120
2500 170 145
2750 185 160
3000 195 170
3500 210 185
4000 215 195
4500 225 200
5000 230 210


250/210 AMPS

Model PX-7_D-250 Tested and Proven

Rotor RPM

Amps @ 13.5 volts


HOT (200?

1800 95 80
2000 125 105
2250 145 120
2500 175 145
2750 190 160
3000 205 170
3500 225 185
4000 235 195
4500 240 200
5000 250 210


Special Features:

  • Dual 5/16" positive output posts.

  • Heavy duty hand wound high output stator.

  • Heavy duty rotor balanced by PennTex.

  • 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 output 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.


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.


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

To go to our Alternator Application Guide Click HERE

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