Voltage Regulator | Sierra 18-5740
Voltage Regulator | Sierra 18-5740
Sierra
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Mercruiser replacement voltage regulator is designed to provide a steady, constant voltage level from marine alternators.
Voltage Regulator | Sierra 18-5740
- Alternator mounted voltage regulator
- Replaces Mercruiser 42785
- Replaces Arco VR785
! Compatibility references are provided for informational purposes only and do not constitute a fitment guarantee. Part numbers, application listings, and "replaces" cross-references are based on manufacturer data and are intended as a starting point for identification — not a guarantee of fit for your specific engine, hull, or installation.
Buyer is solely responsible for verifying compatibility with their engine model, serial number, model year, and trim configuration before purchase. If you are unsure whether this part fits your application, contact MacombMarineParts.com before you buy — we're available via text, email, or online chat to help verify compatibility for your specific application.
MacombMarineParts.com is not liable for parts ordered based on assumed fitment. Returns due to buyer-selected incorrect fitment are subject to our standard return and restocking fee policies.