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Warranty
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Water Coupling Assembly. For Mercruiser Stern Drive, and Mercury Marine. Fits: Alpha One Gen II drives & multiple outboard applications. Replaces Mercruiser 816597A1, Mallory 9-78110, GLM 12041, and 12824. Premium Quality For Longer Life. Meets or exceeds manufacturer's recommended specifications. Backed by Sierra's limited lifetime warranty
| Brand | NAPA |
| Drive Unit I.D. # | O/B G437999 & Below S/D D469859 & Up |
| Replaces OEM Name & # | Mercury Marine 816597A1 |
| VMRS Code | 053011027 |
| Fits Marine Drive System | Alpha One (GenII)/200-250 hp O/B |
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