Mercury MerCruiser Quicksilver Bravo Engine Coupler Assembly 861523A11
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Mercury MerCruiser Quicksilver 861523A11 is a genuine OEM engine coupler assembly used to transfer engine power from the flywheel/crankshaft side of the engine into the Bravo sterndrive input shaft. This coupler is listed for MerCruiser sterndrive V6 and V8 gas engines with Bravo drives, and Mercury reference data notes steel splines for low-speed / work applications with compatibility for metric or SAE attaching screws.
Key Features
- Genuine Mercury Marine / Quicksilver engine coupler assembly
- Used between the engine and Bravo sterndrive input shaft
- Fits select MerCruiser sterndrive V6 and V8 gas engines with Bravo drives
- Steel spline design for supported low-speed / work applications
- Compatible with metric or SAE attaching screws
- OEM part number: 861523A11
- GTIN / UPC reference: 745061482562
- Catalog package reference: approximately 19.25 in. x 19.25 in. x 7.25 in.
- Catalog weight reference: approximately 18 lb
Engine Compatibility
This coupler is primarily associated with MerCruiser GM V6 and V8 gasoline engines using Bravo sterndrives. Application references include many Bravo-drive MerCruiser 5.0L, 5.7L, 350 MAG, 6.2L, 7.4L, 8.1L, 8.2L, and related GM gas engine packages depending on serial number and flywheel / coupler configuration.
Serial Number Fitment Notice
Engine coupler fitment depends on the exact MerCruiser engine model, Bravo drive package, flywheel housing, attaching screw type, spline arrangement, and serial number range. Always confirm compatibility using the MerCruiser engine serial number before ordering, especially where older reference 861523A1 has been superseded by 861523A11.
When This Part Needs Replacement
Replace the coupler if the splines are worn, stripped, rust-damaged, or slipping, or if there is vibration, loss of drive engagement, burning rubber smell, engine-to-drive misalignment damage, or coupler failure during load. A failing coupler can prevent power transfer to the sterndrive even when the engine runs normally.
Installation Notes
Engine coupler replacement typically requires separating the engine from the drive assembly, so engine alignment should always be checked during installation. Inspect the Bravo input shaft splines, engine mounts, flywheel housing, attaching hardware, and alignment condition before reassembly. A new coupler can fail prematurely if the engine alignment or drive input shaft condition is not corrected.
Alternate/Superseded Part Numbers
- 861523A11
- Mercury Marine 861523A11
- Quicksilver 861523A11
- 861523A1 ā earlier superseded reference
Parts Desk Insight
Couplers usually fail for a reason, and alignment is the big one. If the splines are worn out or the coupler has failed under load, checking engine alignment and the Bravo input shaft condition before reassembly is what helps prevent doing the same job twice.
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Shipping information
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Returns & warranty
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