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Your cart is empty.Sierra's 18-5889 Shift Assist Module Kit fits 5.0 and 5.8L Ford engines 1990 and prior. It is interchangeable with CDI 123-9898-P, Mallory 9-24501, and OMC Stern Drive 987739. Each Sierra product meets or exceeds the original equipment part it replaces.
Kindle Customer
2025-05-05 14:52:29
My 1987 Four Winns OMC 5.7L boat was dangerous! It would take all my strength to shift it, I would hit the dock, and would get upset with the way the boat didn't handle! After installing the ESA, I can now shift with one finger, and being around a dock is as it should be, no longer about running over the dock or another boat. I had an ESA failure after about 3 hours of use, Amazon had me a new one in 2 days! I could not ask for better results, either from Amazon, or from Sierra!
Customer
2025-01-14 18:03:01
Works great. Good quality. Just like the original.
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