Holley's premium alternators are engineered to tolerate 30% higher RPMs than conventional alternators and are made in the USA, built for drag racing, auto-cross, or hot-rod use where a stock alternator can fail. The sculpted all-aluminum housing produces cleaner, more efficient output from a compact package, using technology GM adopted for 2014-and-later Corvettes. This polished version fits all Holley accessory brackets as well as 4th-generation F-body, most 1998-2004 GM trucks, and many other applications.
Specifications:
- Output: 150 Amps
- Engine: GM Gen III/IV (LS)
- Material: Aluminum
- Finish: Polished
- Alternator Style: O.E. or 1-Wire
- Voltage: 12V
- Product Type: Alternator
- Part Number: 197-304
Smaller and lighter than the large-case 197-301. Uses weatherproof plug/pigtail P/N 197-400 (sold separately, not included). Black and polished pulley covers are also available (P/N 97-187 and 97-188) for the 197-302 and 197-303; this 197-304 unit already includes a polished cover.
FAQ
What makes this alternator different from a conventional one?
It's designed to tolerate 30% higher RPMs than conventional alternators and produces cleaner, more efficient output from a compact, sculpted aluminum housing.
What brackets and vehicles does it fit?
It fits all Holley accessory brackets, as well as 4th-generation F-body vehicles, most 1998-2004 GM trucks, and many other applications.
Is the connector included?
No, the weatherproof plug/pigtail P/N 197-400 is used with this alternator but is sold separately.
How does this compare to the large-case 197-301?
This 197-304 unit is smaller and lighter than the large-case 197-301, for applications where size and clearance matter.
