Car Alternator, 1-Wire Self-Exciting 12V for GM 305/350

Car alternator replacement restores stable 12V charging power to help prevent hard starts, dim lights, and battery warning alerts. Designed for 1-wire self-exciting setups on Street Rod builds and select GM engines (305/350, BBC/SBC), it matches OE-style mounting and connections for a snug, factory-like fit. Built with an aluminum housing and pure copper round coil for efficient conductivity and heat control.

• Fits 1-wire self-exciting Street Rod GM 305/350 BBC/SBC and select vehicles including 1973–1974 Apollo 4.1L, 1978–1979 Century 3.2L, 1982 Century 2.5L


• Matches OE-fit connections and replaces multiple reference numbers for easier part cross-checking during alternator replacement


• Delivers steady 12V DC output to support ignition, lighting, and infotainment when your charging system is under load


• Uses a 1-groove pulley for consistent belt drive up to 6000 RPM to reduce slip and charging drop-offs


• Improves durability with copper coils, cooling fan, and aluminum housing for better heat dissipation in demanding conditions

If your vehicle shows signs of a failing alternator—hard starts, weak battery charging, flickering headlights, or AC acting up—this high-output alternator is a practical repair choice to restore dependable electrical performance. Confirm fitment by vehicle application and reference numbers before purchase to avoid returns and downtime. Keep your build or daily driver ready for the road with a straightforward alternator swap. Grab yours today.

• Output: 12V DC


• Pulley: 1-groove; rated up to 6000 RPM


• Housing material: Aluminum


• Coil: Pure copper round coil


• Dimensions: 7.1 x 5.5 x 6.7 in (180 x 140 x 170 mm)


• Weight: 11.9 lb (5.4 kg)


• Replaces reference numbers: 7127-SE105C, ADR0335-C, 1-2400-11DR-2, 7127-SECN-100A, 240-203-3DC, 400-12395