Mercruiser Engine Coupler Kit | Sierra 18-2175
Mercruiser Engine Coupler Kit | Sierra 18-2175
Sierra
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Mercruiser Engine Coupler Kit | Sierra 18-2175
- Engine coupler is the flex plate triangular style for late model engines with small crankshaft bolt pattern
- Fits Mercruiser model 175 engines with serial number range B527955-B773242
- Fits Mercruiser model 205 engines with serial number range B527955-B775129
- Fits Mercruiser 4.3L engines from 1988 to 1993 with serial number range B527955-F000877
- Fits Mercruiser 305 model 200 engines 1985 to 1987 with serial number range 6899058-B774444
- Fits Mercruiser 5.0L Alpha engines with serial number range B774445-F000000
- Coupler is used on 4.3L OMC and Volvo Penta engines from 1986-98, 5.0L 1986-88 and 1998, 5.7L 1986-1992,1994,1996-1998
- Fits Mercruiser 5.0LX Alpha engines with serial number range B773740-F000000
- Fits Mercruiser 320 EFI engines with serial number range A543604-C622418
- This coupler is the flex plate style for late model engines with small crankshaft bolt pattern
- Fits Mercruiser 350 MAG Alpha engines with serial number range A635178-F000000
- Kit includes 18-2146 yoke shaft
- Replaces Mercury 18643A7, 12632A2, and 12632A4
! 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.