Alternator, Powermaster, 1954-88 GM, CS130, 140A, 1v Pulley

GM CS130 140-Amp Alternator (V-Belt) by Powermaster®

95-amp idle output, a compact case and two cooling fans support low-speed charging.

This Powermaster® CS130 provides 95 amps at idle and 140 amps at top end, supporting charging and accessory loads at low engine speeds. Its compact 5.12-inch case and 6.61-inch straight mounting span offer a smaller-case option for compatible 10SI/12SI installations; pulley alignment and wiring still need to match. Internal and external fans move cooling air through the alternator to dissipate heat. An internal regulator supports one-wire installation or a compatible OE-style hookup without a separate external regulator. The single-groove V-belt pulley is included. Each alternator is individually dyno-tested to document output.

• GM CS130-style applications; see full fitment list below • Output: 95 amps at idle, 125 at cruise and 140 at top end • 5.12-inch housing; 6.61-inch straight mounting span • Included single-groove V-belt pulley • Internal and external fans dissipate underhood heat • Internal 12V regulator; one-wire or compatible OE-style charging hookup • Finish choices: chrome, polished, natural, black • Individually dyno-tested to document charging output