⚠ Please note: this part is FACTORY REMAN, not new old stock (NOS).
This is a genuine Alternator 90-01-4058 Delco 21SI 12V 100A fits Champion Ford Mack from our surplus inventory of heavy-equipment parts in San Antonio, Texas. It is a factory reman unit.
Verify fitment with your machine's serial number before ordering — we're happy to help cross-reference. Call (210) 324-8771 or send a quote request with your model and serial number.
We ship nationwide and to US freight forwarders for export buyers. Volume and fleet inquiries welcome.