Holley Ford 7.3L Godzilla Alternator and Bracket Kit

Fits 2020 & Up Ford 7.3-liter Godzilla Engine with 105-amp Alternator

Part # 20-380
Estimated Ship Date: 04/14/2023
Free Shipping - Lower 48 US States
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Vehicle emissions regulations are not applicable to this item.

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The factory alternator(s) on the 2020 & Up Ford 7.3-liter Godzilla engine is a bulky single or dual alternator design that is tough to package in an engine swap. This Holley alternator system is more compact for extra clearance and works with the factory timing cover, water pump, damper/crank pulley, and intake manifold (also works with after-market damper/crank pulley). The 20-380 alternator kit, or 97-409 bracket, works great with 7.3 crate engines and take-out swap engines. Crate engines come with almost everything needed except an alternator bracket. Holley's bracket and alternator solution are compact and lightweight. The Holley alternator is easy to wire and does not require the factory ECU to function like the OE alternator. Holley includes the plug /pigtail, pulleys, and belt in the 20-380 complete kit. Note the included belt is for alternator-only applications, but the instructions specify the belt for other configurations. The bracket allows for any accessory configuration - it works with or without the air conditioning compressor and with or without a power steering pump.


  • Alternator kit and mounting bracket for Ford Godzilla 7.3-liter engine swaps
  • Part number 20-380 is the complete solution with everything needed to add an alternator to the Ford 7.3-liter crate engine
  • Eliminates bulky dual alternator system – factory setup on some heavy-duty trucks
  • Works with the factory timing cover, water pump, damper/crank pulley, and intake manifold (also works with after-market damper/crank pulley)
  • Compact design with alternator pulled in tight to the engine for extra clearance under the hood
  • The mounting bracket is compatible with Holley alternators 197-300, 197-301, 197-302, and 197-303
  • Easy wiring of alternator & does not require factory ECU to excite alternator - wiring pigtail 197-400 included with part # 20-380
  • Choose from a complete kit with 105-amp Holley alternator (Part # 20-380), or bracket kit (part # 97-409)
  • Natural as cast finish on the mounting bracket and alternator
  • Works with or without an air conditioning compressor
  • Works with or without a power steering pump
  • For alternator-only race setup, 97-409 bracket should be used with Holley premium alternator PN 197-302 or 197-303 – ideal for high rpm applications (alternator designed and tested for up to 30% higher rpm)
  • Ideal for use on Godzilla crate engines & engine swaps

About Holley

Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From start to finish, Holley has the parts to make your dream a reality.

Alternator Amperage105
Alternator IncludedYes
ApplicationFord 7.3L Godzilla
Belt IncludedYes
Brand Holley
Emission Code6
EngineFord 7.3L Godzilla
MaterialCast Aluminum
Output105 Amps
Product TypeAccessory Bracket
Part Number20-380

Vehicle emissions regulations are not applicable to this item.
Use with Ford 7.3L Godzilla factory intake manifold and factory accessory drive system only. A different belt will be required - if the power steering pump, or air conditioning compressor is omitted.

*Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.