Ignitions and Electrical› Charging Systems

Holley

Alternator Serpentine GM 150amp 1-Wire Black

$775.50

SKU: H00E 197-303

In Stock
In Stock
Ships by Jun 9
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Holley 197-303 is a 150 Amp, 12V alternator with a 1-wire, 6-rib serpentine pulley, and a black anodized aluminum case. It is designed for GM LS-Series engines and offers a smaller, lighter profile compared to other alternators.

Fitment

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Specifications

BrandHolley
Part NumberH00E 197-303
Weight12.8 lb

Videos

Holley alt flex pnp update

Holley alt flex pnp update

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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