Holley Premium Alternators 197-303 Alternators, Premium, OE Style, Cast Aluminum, Black Anodized, 150 amps, 12V, Internal Regulator, Serpentine Pulley, Chevy, 4.8-7.0L, Each
Holley Premium Alternators 197-303 Alternators, Premium, OE Style, Cast Aluminum, Black Anodized, 150 amps, 12V, Internal Regulator, Serpentine Pulley, Chevy, 4.8-7.0L, Each
Description
Alternator - 150 amps - 12V - 1-Wire - 6-Rib Serpentine Pulley - Aluminum Case - Black Anodized - GM LS-Series - Each
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:16:07
Features
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Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Holley, Hilborn, Holley Efi, Retrobright, Terminator X |
| StreetFX SKU | hly197-303 |
| SFX Item ID | 4783245 |
| Accounting SKU | hly-197-303 |
| Manufacturer SKU | 197-303 |
| Manufacturer UPC | 090127017784 |
| Alternative References | 197-303, HLY-197-303, HOL197-303 |
Alternators, Premium, OE Style, Cast Aluminum, Black Anodized, 150 amps, 12V, Internal Regulator, Serpentine Pulley, Chevy, 4.8-7.0L, Each
With performance engines pushing redlines up higher and higher, alternators are being forced beyond their design. Holley's premium alternators can tolerate 30 percent higher rpms than conventional models. The attention to cosmetic detail on these units is above and beyond what you would expect, too. The entire outside housing has been sculpted for a smooth silhouette that hides the ugly details we typically think of as alternators. If you drag race, autocross, or just hot rod your ride, be assured that Holley premium alternators won't fly apart on you.
Features:
• Available in natural, black, and polished finishes
• Works with all Holley accessory brackets, as well as 4th generation F-body, most 1998 thru 2004 GM trucks, and many other applications
• 150 amp output
• Smaller and lighter than Holley high-amp alternators
• Housings are smoothed to make polishing clean (no buffer cut marks trying to get in tight corners)
• Rear cover is aluminum instead of typical black plastic
• Ideal when size and clearance matter
• Black and polished pulley covers are available on models that don't already include them
• Designed for use with Holley alternator weatherproof pigtails (not included)
| Product Attributes | |
|---|---|
| Brand | Holley |
| Manufacturer's Part Number | 197-303 |
| Part Type | Alternators and Generators |
| Product Line | Holley Premium Alternators |
| UPC | 090127017784 |
| Remanufactured | No |
| Advertised Amperage Output | 150 amps |
| Color | Black |
| Coating Type | Anodized |
| Voltage Compatibility | 12 |
| One-Wire Capable | Yes |
| Pulley Included | Yes |
| Pulley Style | Serpentine |
| Regulator Included | Yes |
| Alternator Regulator Location | Internal |
| Belt Included | No |
| Alternator Brackets Included | No |
| Quantity | Sold individually. |
| Notes | Fits all Holley accessory brackets, as well as 4th generation F-body, most 1998 thru 2004 GM trucks. |
Compatibility
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