Sierra 18-99395 Timer Base/Trigger Assembly – Fits Johnson/Evinrude, Replaces CDI 133-4804





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This is a brand new Sierra timer base and trigger assembly – part number 18-99395 – that fits a bunch of Johnson and Evinrude outboard motors.
It replaces the CDI 133-4804 unit, so if your ignition timing is off or you're getting weak spark, this is likely the fix.
Made right here in the USA by Dometic, so quality is solid.
Comes with a limited lifetime warranty – pretty sweet deal.



Straightforward swap if you've got basic mechanical skills.




No need to hunt down obsolete OEM parts – this aftermarket piece does the job perfectly.
Reliable, tested, and backed by a killer warranty.
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FREE In store & Online Returns If for some reason, you're not 100% satisfied with your purchase, you can return or exchange quickly and easily in accordance with our Return policy. Some restrictions may apply.
PRICE MATCH Guaranteed SONIASANCHEZ.NET will gladly match the price on a qualifying item sold in store or online at a qualifying retailer. See details













