300 Amp High Output Alternator For GMC Sierra 1500 2500HD 3500HD – 4.3L 5.3L 6.2L 6.6L

Need serious power for your GMC Sierra?

This 300-amp high-output alternator from KN ALTERNATOR is exactly what your truck’s been asking for.

Fits 1500, 2500HD, and 3500HD models with 4.3L, 5.3L, 6.2L, or 6.6L engines.

Whether you’re running off-road lights, a winch, audio gear, or just want rock-solid electrical performance, this unit delivers.

It’s a direct replacement—bolt it in and go.

Voltage sits at 14V, amperage at 300A, and it comes with a 6-month warranty.

Made in the USA and compatible with a ton of OE numbers like 104211-9110, 22747894, 84143542, and more.

Don’t let a weak alternator slow you down.