Customer Ratings
Customer Reviews
⭐️ Lionparts has awesome customer service and can’t thank them enough for their help in getting my order/setup correct! - Tom M.
⭐️ Best customer service I have experienced in a very long time. Product is high quality and fits perfect - Christy
⭐️ LionParts has been very consistent, and helpful finding the necessary parts for my needs! - Curtis
⭐️ Had an awesome experience with Lionsparts! I bought my KFI snow plow from them through Trevor who was very knowledgeable and helpful! - Eric
WSM Crankshaft Oil Seal for Mercury / Mariner 30 - 300 Hp 73-14 550-31
$18.32
Questions? Call or text us at:1-888-927-3076
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Customer Reviews
⭐️ Lionparts has awesome customer service and can’t thank them enough for their help in getting my order/setup correct! - Tom M.
⭐️ Best customer service I have experienced in a very long time. Product is high quality and fits perfect - Christy
⭐️ LionParts has been very consistent, and helpful finding the necessary parts for my needs! - Curtis
⭐️ Had an awesome experience with Lionsparts! I bought my KFI snow plow from them through Trevor who was very knowledgeable and helpful! - Eric
NOTES:
This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials using up-to-date equipment, it ensures everlasting reliability and enduring value. This product is distinguished by total quality assurance, unsurpassed by anybody else.
OEM Replacement Numbers: 26-41953, 26-25837, 26-29476, 26-20079, 26-419531
Brand: WSM
Part Number: 550-31
Fitment:
- 1984-1989 Mercury 2 Cyl 2.875 Bore Cross Flow 35
- 1973-1983 Mercury 2 Cyl 2.875 Bore Cross Flow 40
- 1994-2007 Mercury 2 Cyl 2.992 Bore 30
- 1994-2007 Mercury 2 Cyl 2.992 Bore 40
- 1991-1994 Mercury 3 Cyl 120
- 1987-1990 Mercury 3 Cyl 2.875 Bore Cross Flow 50
- 1987-1990 Mercury 3 Cyl 2.875 Bore Cross Flow 60
- 1973-1974 Mercury 3 Cyl 2.875 Bore Cross Flow 65
- 1991-1997 Mercury 3 Cyl 2.955 Bore Looper 50
- 1991-1997 Mercury 3 Cyl 2.955 Bore Looper 60
- 1991-1997 Mercury 3 Cyl 2.992 Bore 55
- 1991-1997 Mercury 3 Cyl Jet 45
- 1973-1974 Mercury 4 Cyl 2.565 Bore Cross Flow 50
- 1973-1974 Mercury 4 Cyl 2.875 Bore Cross Flow 85
- 1973-1983 Mercury 6 Cyl 2.875 Bore Cross Flow 115
- 1973-1974 Mercury 6 Cyl 2.875 Bore Cross Flow 150
- 1980-1983 Mercury 6 Cyl 2.875 Bore Cross Flow 90
- 1989-1990 Mercury 6 Cyl 250
- 1989-1994 Mercury 6 Cyl 275
- 1986-2000 Mercury 6 Cyl 3.125 Bore 2L 135
- 1978-2005 Mercury 6 Cyl 3.125 Bore 2L 150
- 1976-1981 Mercury 6 Cyl 3.125 Bore 2L 175
- 1981-1982 Mercury 6 Cyl 3.375 Bore 2.4L 175
- 1980-1982 Mercury 6 Cyl 3.375 Bore 2.4L 200
- 1980-1981 Mercury 6 Cyl 3.375 Bore 2.4L 225
- 1983-1999 Mercury 6 Cyl 3.375 Chrome Bore 2.4L 175
- 1982-1990 Mercury 6 Cyl 3.375 Chrome Bore 2.4L 200
- 1987-1991 Mercury 6 Cyl 3.375 Chrome Bore 2.4L 220
- 1991-2005 Mercury 6 Cyl 3.501 Bore 2.5L 200
- 1992-2010 Mercury 6 Cyl 3.501 Bore 2.5L EFI 150
- 1989-2004 Mercury 6 Cyl 3.501 Bore 2.5L EFI 175
- 1989-2006 Mercury 6 Cyl 3.501 Bore 2.5L EFI 200
- 1992-1999 Mercury 6 Cyl 3.501 Bore 2.5L Jet 105
- 2007-2013 Mercury 6 Cyl 3.501 Bore 2.5L Jet 110
- 1992-2005 Mercury 6 Cyl 3.501 Bore 2.5L Jet 140
- 2000 Mercury 6 Cyl 3.501 Bore 2.5L Optimax 115
- 1998-2012 Mercury 6 Cyl 3.501 Bore 2.5L Optimax 135
- 1998-2014 Mercury 6 Cyl 3.501 Bore 2.5L Optimax 150
- 2001-2014 Mercury 6 Cyl 3.501 Bore 2.5L Optimax 175
- 2001-2006 Mercury 6 Cyl 3.501 Bore 2.5L Pro Max 200
- 1997-2006 Mercury 6 Cyl 3.501 Bore 2.5L Sport Jet 175
- 2001-2006 Mercury 6 Cyl 3.501 Bore 2.5L Sport Jet 200
- 2000-2005 Mercury 6 Cyl 3.501 Bore 2.5L Sport Jet 210
- 2000-2006 Mercury 6 Cyl 3.501 Bore 2.5L Sport Jet 240
- 1992-1997 Mercury 6 Cyl 3.501 Bore 2.5L XRI 200
- 1994-2004 Mercury 6 Cyl 3.625 Bore 3L EFI 225
- 2005 Mercury 6 Cyl 3.6265 Bore 3L Optimax 250
- 1993-1997 Mercury 6 Cyl EFI 300
Note: Image is for reference only, actual product may vary slightly.
