Description:
123-7571 Electronic Shift Assist Module from CDI Electronics is a direct replacement ESA designed for boats equipped with a Prestolite BID (breaker-less ignition) distributor and a single 5-pin ESA connector.
The ESA system momentarily interrupts ignition during shifting to reduce load on the drive, allowing smoother gear engagement and protecting the sterndrive from damage. A faulty module can cause hard shifting, stalling when coming out of gear, or drive engagement issues.
Fits Engines
• GM 5.7L V8
• Ford 5.0L (including HO)
• Ford 5.8L
Use with electronic Prestolite BID distributor only.
Replaces OEM Part Numbers
763788
987400
987564
987571
987700
987704
987876
Important Installation Notes
• Designed for use with Prestolite BID distributor and single 5-pin ESA connector.
• Not compatible with other distributor types or two-plug ESA systems (contact CDI for cross reference).
• May not function correctly and can be damaged if used with an aftermarket high-current ignition coil.
• Professional marine installation strongly recommended.
For compatibility confirmation, please provide engine make, model, serial number, and distributor type prior to ordering.