Speedyautoparts Delco 12SI 1-Wire High Output Alternator - 140 Amp, Clockwise Rotation, Fits 1965-1986 (7273-12, 1100257)

If you're building a hot rod, restoring a classic, or just want more juice for your vintage vehicle, check out this alternator.

It's a Speedyautoparts high-output unit based on the classic Delco 12SI design.

The big deal is that it's a '1-wire' setup, which makes wiring stupid simple—just connect the battery terminal.

It pumps out a solid 140 amps, way more than the original.

It has a clockwise rotation and a standard V-belt pulley.

It fits a ton of GM applications from roughly 1965 to 1986.

No core charge required, and it's backed by a 1-year warranty.

A reliable upgrade for your old ride.