Mercruiser Pre-Vortec Engine Coupler | Sierra 18-2172
Mercruiser Pre-Vortec Engine Coupler | Sierra 18-2172
Sierra
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Mercruiser Pre-Vortec Engine Coupler | Sierra 18-2172
Sierra Mercruiser Pre-Vortec Engine Coupler 18-2172
- Engine coupler is used when replacing Mercruiser V6 or V8 2 piece rear main seal engines with 3 ½ inch crankshaft bolt pattern to a newer 1 piece engine with 3 inch bolt pattern
- Replaces Mercury 14505A2
- Replaces OMC 775495
- Replaces Mallory 9-72500
! 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.