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Pontiac Grand Am High Output Alternators

Grand Am coupes and sedans were everywhere in the early 2000s, and many picked up amplifiers, neon accents and subwoofer boxes along the way. Owners restoring or rebuilding one today can choose a Pontiac Grand Am high output alternator from four Mechman units: 240 and 320 Amp for the 1999-2005 3.4L, and 240 and 320 Amp for the 2002-2005 2.2L Ecotec.

  • 4 products
  • 1999–2005
  • 240–320 Amp
All Pontiac alternators

4 products

Rebuilding a 2000s Audio Car the Right Way

Plenty of Grand Ams wore audio systems that outgrew their charging systems the day they were installed. A rebuild is a chance to fix that. Start with the alternator, then upgrade the big three wires, then add amplifiers. A Pontiac Grand Am high output alternator keeps voltage steady under bass, which protects amplifiers and keeps the headlights from pulsing with the music.

The 3.4L V6 and the 2.2L Ecotec use different alternator families. V6 cars are covered from 1999-2005, and Ecotec cars from 2002-2005. Enter your year and engine in the vehicle finder above the products to see the two Mechman high output alternators for your car.

Output Guidance

The 240 Amp unit suits a period-style build with one amplifier and a subwoofer box. The 320 Amp unit gives room for multiple amplifiers, accent lighting and a larger battery. The Grand Am shares both families with its Oldsmobile cousin, the Oldsmobile Alero.

Heavier power and ground runs come from our amp wiring kits, and every Pontiac fitment we list is on the Pontiac alternators page.