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DYNAFORCE ALTERNATOR 120
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MSD IGNITIONPART NUMBER: 121-5321MSD

DYNAFORCE ALTERNATOR 120

$46695$519.95You Save$53.00
ShippingShips on 09/04/2026
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MSD DynaForce Alternator - 120 AMP - Black

MSD Ignition 121-5321MSD Features:

Whether you need a high output alternator to power your muscle car, street rod or touring machine, MSD has you covered with the DynaForce Alternator. For the street, MSD offers a 120 or 160 amp one-wire alternator. Not only are they designed for extreme output at higher rpm, but MSD balances the current output to keep your electronic components up to speed during idle and lower rpm operation as well. Both the 120 and 160 Amp Alternators feature one-wire installation to keep things clean, easy and effective. The charge post of the alternators is moved to the side of the housing to allow for improved clearance to the block, plus a pulley baffle is included to ensure there is never any fan-to-belt issues (common at high rpm on lesser alternators).
  • One wire installation with added fan baffle for belt protection
Part TypeAlternator
BrandMSD IGNITION
Package Height7.25
Package Width7.5
Package Length9.25
Weight12.5 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number5321MSD
Package Qty1
Package TypeEA
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