NOTE: PX-5G and PX-5GM alternators look similar to a PX-4G-5 with a wider PX-5-style stator. Other PennTex PX-5 Series alternators include the PX-520P, PX-520P2, and PX-520TF. To see our Application Guide click HERE.

See our 250 amp version, the  PX-525 Series (Click Here)

PX-4000 Voltage Regulator

Special Features:

• Dual Positive Output Posts

• 5/16" ground & battery post.

• Hand wound stators - 12 gauge copper wire.

• Specially designed longer brushes.

• Heavy duty dual plane balanced rotor.

• Double grease sealed extra wide cartridge front ball bearing.

• Double grease sealed rear ball bearing.

• Twelve (18) press fit 60 amp diodes.

• Newly designed finned diode heat sinks.

• Regulator has ground fault protection and high voltage protection.

• GXL wire is standard in all harnesses.

• Standard OEM belt can be used in most applications.

• Standard OEM mounting - no brackets needed in most applications. We have special brackets available in applications that require them.

• 24 volt and other voltages available.

• Weight: 25 lbs.

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